Hvac equipment and control parts that we services and install
Posted on May 15, 2018
Bearings are highly engineered, precision-made components that enable machinery to move at extremely high speeds and carry remarkable loads with ease and efficiency.Bearings must be able to offer high precision, reliability and durability, as well as the ability to rotate at high speeds with minimal noise and vibration.Bearings are found in applications ranging from automobiles, airplanes, computers, construction equipment, machine tools, DVD players, refrigerators and ceiling fans.If something twists, turns or moves, it probably has a bearing in it. Northfield, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates experts, service repair and installation AirEase
A belt is a loop of flexible material used to link two or more rotating shafts mechanically, most often parallel. Belts may be used as a source of motion, to transmit power efficiently, or to track relative movement. Belts are looped over pulleys and may have a twist between the pulleys, and the shafts need not be parallel. In a two pulley system, the belt can either drive the pulleys normally in one direction (the same if on parallel shafts), or the belt may be crossed, so that the direction of the driven shaft is reversed (the opposite direction to the driver if on parallel shafts). As a source of motion, a conveyor belt is one application where the belt is adapted to carry a load continuously between two points. Wrigleyville, Chicago, ac hvac rooftop units residentail and commercail heating and air conditioning free estimates professionals, service repair and installation Amana
A centrifugal fan is a mechanical device for moving air or other gases. The terms "blower" and "squirrel cage fan" (because it looks like a hamster wheel) are frequently used as synonyms. These fans increase the speed of air stream with the rotating impellers.Uptown, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates specailists, service repair and installation American Standard
A fan is a machine used to create flow within a fluid, typically a gas such as air. The fan consists of a rotating arrangement of vanes or blades which act on the fluid. The rotating assembly of blades and hub is known as an impeller, a rotor, or a runner. Usually, it is contained within some form of housing or case. Edgewater, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates maintenance, service repair and installation Ameristar
A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal. Rogers Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates repairman service repair and installation Arcoaire
A capacitor is made up of two metallic plates. With a dielectric material in between the plates. When you apply a voltage over the two plates, an electric field is created. Positive charge will collect on one plate and negative charge on the other. Lake View, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates technicians, service repair and installation Armstrong
A circuit board (PCB) mechanically supports and electrically connects electronic components using conductive tracks, pads and other features etched from copper sheets laminated onto a non-conductive substrate.Lincoln Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates serviceman, service repair and installation Bryant
By function timers can be categorized to two main types. A timer which counts upwards from zero for measuring elapsed time is often called a stopwatch; a device which counts down from a specified time interval is more usually called a timer or a countdown timer. A simple example for this type is an hourglass. Gold Coast, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates servicing, service repair and installation carrier
The compressor and condenser are usually located on the outside air portion of the air conditioner. The evaporator is located on the inside the house, sometimes as part of a furnace. That's the part that heats your house. The working fluid arrives at the compressor as a cool, low-pressure gas, Old Town, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates trouble shooting service repair and installation Comfortmaker
Ducts are used in heating, ventilation, and air conditioning (HVAC) to deliver and remove air. The needed airflows include, for example, supply air, return air, and exhaust air.Ducts commonly also deliver ventilation air as part of the supply air, Bucktown, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates repairing, service repair and installation Concord
The purpose of the filter on your aquarium is to remove excess food, decaying organic matter, free-floating particulate, dangerous chemicals, and the fish's waste products from the water. The fish excrete waste constantly as they swim around in the water. Avondale, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates cleaning service repair and installation day and night
A fuse is nothing more than a short length of wire designed to melt and separate in the event of excessive current. Fuses are always connected in series with the component(s) to be protected from overcurrent, so that when the fuse blows (opens) it will open the entire circuit and stop current through the component(s). Irving Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates checking, service repair and installation Fraser Johnston
A thermal fuse is a cutoff which uses a one-time fusible link. Unlike a thermal switch which may automatically reset itself when the temperature drops, the thermal fuse is more like an electrical fuse: a single-use device that cannot be reset and must be replaced when it fails or is triggered. Albany Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates replacements service repair and installation Frigidaire
A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overcurrent or overload or short circuit. Its basic function is to interrupt current flow after protective relays detect a fault. Humboldt Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates installations, service repair and installation Gibson
A gas burner is a device to generate a flame to heat up products using a gaseous fuel such as acetylene, natural gas or propane. Some burners have an air inlet to mix the fuel gas with air to make a complete combustion. Acetylene is commonly used in combination with oxygen, West Town, Chicago, IL ac hvac heating rooftop units residentail and commercail and air conditioning free estimates air conditioning service repair and installation Goodman
A flow control valve regulates the flow or pressure of a fluid. Control valves normally respond to signals generated by independent devices such as flow meters or temperature gauges. Control valves are normally fitted with actuators and positioners, Near North Side, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates heating service repair and installation Heil
A gasket is a mechanical seal which fills the space between two or more mating surfaces, generally to prevent leakage from or into the joined objects while under compression. Gaskets allow "less-than-perfect" mating surfaces on machine parts where they can fill irregularities. Wicker Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates furnace service repair and installation Lennox
A typical heating element is usually a coil, ribbon (straight or corrugated), of strip of wire that gives off heat much like a lamp filament. When an electric current flows through it, it glows red hot and converts the electrical energy passing through it into heat, which it radiates out in all directions, Ravenswood, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates cooling service repair and installation luxaire
Hot Surface Ignitor: Furnace hot surface ignitors are found on most modern furnaces to light the gas flames upon unit start-up. Electricity passes through the Silicon Carbide or the newer Silicon Nitride ignitor and makes it glow red hot. Oak Park, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates experts, service repair and installation Maytag
An ignition control module is a computer that controls the ignition coil or the ignition coil's firing time. The ignition control module is the heart of an automobile's ignition system. It regulates spark generation within the engine. River West, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates professionals, service repair and installation NuTone
Insulation materials run the gamut from bulky fiber materials such as fiberglass, rock and slag wool, cellulose, and natural fibers to rigid foam boards to sleek foils. Bulky materials resist conductive and -- to a lesser degree -- convective heat flow in a building cavity. River North, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates specailists, service repair and installation Payne
AC motors work a slightly different way: they pass alternating current through opposing pairs of magnets to create a rotating magnetic field, which "induces" (creates) a magnetic field in the motor's rotor, causing it to spin around, North Center, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates maintenance, service repair and installation Rheem
A pulley is a wheel with a groove along its edge, that holds a rope or cable. Usually, two or more pulleys are used together. When pulleys are used together in this way, they reduce the amount of force needed to lift a load. A crane uses pulleys to help it lift heavy loads. Sheridan Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates repairman service repair and installation Tappan
A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps. West Ridge, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates technicians, service repair and installation Tempstar
A sensor is a device that detects and responds to some type of input from the physical environment. The specific input could be light, heat, motion, moisture, pressure, or any one of a great number of other environmental phenomena. Forest Glen, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates serviceman, service repair and installation Trane
There are two types of thermistors: Negative Temperature Coefficient (NTC) and Positive Temperature Coefficient (PTC). With an NTC thermistor, when the temperature increases, resistance decreases. Conversely, when temperature decreases, resistance increases. This type of thermistor is used the most. Hollywood Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates servicing, service repair and installation Weather King
Just as switches allow different devices on a network to communicate, routers allow different networks to communicate. A router also connects networked computers to the Internet, allowing multiple users to share a connection. And a router acts as a dispatcher. North Mayfair, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates trouble shooting service repair and installation Westinghouse
Built as a temperature-sensitive switch, a thermostat for the home will automatically turn the air conditioning and heating system on and off to maintain a level of quality air in the home's interior. The functionality of the thermostat varies between units, Old Irving Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates repairing, service repair and installation York
The supplied main energy source may be electric current, hydraulic fluid pressure, or pneumatic pressure. When the control signal is received, the actuator responds by converting the energy into mechanical motion. An actuator is the mechanism by which a control system acts upon an environment. Belmont Central, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates fixing, service repair and installation AirEase
Air filter: Prevents harmful debris, dirt and contaminants from entering your engine. Cabin filter: An implementation that began appearing in vehicles in 2002, it prevents dust, pollen, dirt and other pollutants from entering your car through your A/C and heat vents. Belmont Cragin, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates cleaning service repair and installation Amana
A simple bearing, like the kind found in a skate wheel. Bearings reduce friction by providing smooth metal balls or rollers, and a smooth inner and outer metal surface for the balls to roll against. These balls or rollers "bear" the load, allowing the device to spin smoothly. Cicero, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates checking,service repair and installation American Standard
The blower motor is the component responsible for pushing air through the vents of your furnace heating and air conditioning systems. Without it, the AC system will not be able to circulate the heated or cooled air. Dunning, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates replacements service repair and installation Ameristar
It provides an interface between two parts, damping the energy transmitted through the bushing. A common application is in vehicle suspension systems, where a bushing made of rubber (or, more often, synthetic rubber or polyurethane) separates the faces of two metal objects while allowing a certain amount of movement. Belmont Heights, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates installations, service repair and installation Arcoaire
In systems involving heat transfer, a condenser is a device or unit used to condense a substance from its gaseous to its liquid state, by cooling it. In so doing, the latent heat is given up by the substance, and will transfer to the condenser coolant. Condensers are typically heat exchangers which have various designs and come in many sizes ranging from rather small (hand-held) to very large industrial-scale units used in plant processes. For example, a refrigerator uses a condenser to get rid of heat extracted from the interior of the unit to the outside air. Condensers are used in air conditioning, industrial chemical processes such as distillation, steam power plants and other heat-exchange systems. Use of cooling water or surrounding air as the coolant is common in many condensers. Galewood, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates air conditioning service repair and installation Armstrong
Air filter - Material that is put in the return air flow to catch particles before they get to the equipment. The most common type of filter is a 5% filter. This filter is one inch thick and you can see through them. This filter will only stop the largest particles. A three month filter is the same width but much denser. It can still allow the same airflow through it due to its accordion design giving it more surface area. The next step up in filtration are referred to as air cleaners. They are specially installed in their own cases. Space-Gard filters made by Aprilaire, are six inches thick and have 27 square feet of surface area, allowing it to stop up to 95% of the particles, including mold spores, bacteria, pollen and pet dander. These filters require no electrical connections and are changed on average of once a year. Electronic air cleaners use a washable pre-filter to catch the large particles, the air cleaner then gives all the rest of the particles a positive charge through ionizing wires. The particles then stick to negatively charged plates. These can be annoying as the larger particles will cause a spark when sticking to the negative plates. This causes unwanted noise and ozone to be generated. These cell must also be pulled and soaked at least twice a year to clean them. They are also much more expensive to install and maintain. Jefferson Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates heating service repair and installation Bryant
Blower motor - This is the motor that moves the air around your house. It moves the air across the heat exchanger (for heat) and the evaporator coil (for cooling). Most need to be oiled once a year by a serviceman. There is a blower wheel attached to the shaft of the motor and this is what moves the air. Edison Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates furnace service repair and installation carrier
Capacitor - There are two types of capacitors, the start capacitor and the run capacitor. Both types of capacitors store electricity and release it to give a motor more power. The start capacitor is used for starting your compressor, it basically gives the compressor a short burst of power when it starts up. Most residential compressors do not need a start capacitor, but as the compressor gets older it may need one. This is usually a sign that the compressor is at the end of its life. A run capacitor is used for the compressor, the condenser fan motor, and the blower motor. They provide extra power for the motors when they are running. Capacitors are rated in microfarads and need to be checked every year. If a capacitor is rated a 40 microfarads is only showing 20, it will put extra stress on the motor causing it to run hotter and less efficiently. A capacitor that is not operating normally will run your electric bills up and shorten the life span of the motor. Franklin Park, Illinois ac hvac rooftop units residentail and commercail heating and air conditioning free estimates cooling service repair and installation Comfortmaker
CFM - Cubic feet per minute. This is a measurement of how much air is flowing through an area. If a furnace is rated a 1200 CFM, it will move 1200 cubic feet of air every minute. When matching a furnace to a condensing unit, the furnace must be rated at 400 CFM for every ton the condensing unit is rated at. Ex. Four ton condensing unit needs a 1600 CFM furnace. When trying to get the proper CFM needed for a particular house, the rule is you need six air changes per hour or one every 10 minutes. A house that has 2000 square feet of conditioned space and 10 foot ceilings would have 20,000 cubic feet of air, to get one air change every 10 minutes you would need a furnace that can move 2000 CFM of air, which is five tons of air-conditioning. Many other factors have to be taken into consideration to properly size an an air-conditioning system, such as insulation, windows, climate, etc. but this is a quick way to guess the size needed. O'Hare, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates heating and air conditioning free estimates experts, service repair and installation Concord
Circuit board - The circuit board simply controls the sequence of events needed for proper operation of the equipment. Most new equipment now use circuit boards instead of a series of relays and timers. Circuit boards are generally very reliable, which is good because they are usually very expensive. Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates cooling service repair and installation Daikin
Compressor - The heart of the system. It takes the refrigerant and turns it from a cool, low pressure gas, and turns it into a hot, high pressure gas through some type of compression. Most residential compressors use either a piston or a scroll to achieve this. A piston traps gas in a cylinder then the piston compresses the gas and releases it. A scroll uses two seashell type plates rotating against each other, forcing the gas to travel through a space that is getting ever smaller. Northlake, Illinois ac hvac rooftop units residentail and commercail heating and air conditioning free estimates experts, service repair and installation day and night
Condenser coils - Located in the outside unit, it's the part that the refrigerant flows through, and is condensed from a hot gas into a liquid. It is made of copper or aluminum tubing and some type of fins for air to flow through. Addison, Illinois ac hvac rooftop units residentail and commercail heating and air conditioning free estimates professionals, service repair and installation Frazier Johnstone
Condenser fan motor - Located in the outside unit, it's function is to move the air across the condenser coil to cool the refrigerant, and change it from a hot gas into a liquid. Some motors require lubrication once a year while others are sealed and never need lubrication. It's always best to have a service technician do the lubrication for you, so the right type of oil is used. Bensenville, Illinois ac hvac rooftop units residentail and commercail heating and air conditioning free estimates specailists, service repair and installation Frigidaire
Condensing Unit - It is the large piece of equipment that is outside your house. It contains a compressor, condenser coils, a fan motor, and various controls. A Carrier condensing unit is pictured here. Mouse over the unit to see the names of all the different parts, click to go to the definition. Itasca, Illinois ac hvac rooftop units residentail and commercail heating and air conditioning free estimates maintenance, service repair and installation Gibson
Contactor - Part of your outside unit that turns the unit on and off. It receives a low voltage signal from your thermostat causing the contacts to close sending power to the compressor and fan motor. The most common cause of failure for this part is bugs. Ants are particularly fond of crawling between the contacts. When the contacts close you get a smashed ant that can cause the connection to fail and your unit will not come on. Always keep ant mounds away from the outside unit. Wood Dale, Illinois ac hvac rooftop units residentail and commercail heating and air conditioning free estimates repairman service repair and installation Goodman
Disconnect - A component where all power can be shut off for a particular piece of equipment. Usually found mounted on a outside wall next to the condensing unit. This is just to turn the power off, it offers no circuit protection, that is done by the circuit breakers. It is now required for all installations of condensing units to have a disconnect within sight. Its a recommended to turn the power to the unit off at the disconnect whenever you are washing the condenser coils. Arlington Heights ac hvac rooftop units residentail and commercail heating and air conditioning free estimates technicians, service repair and installation Heil
Evaporator coil - This is the equipment that is installed next to or on top of your furnace. In applications that use electric heat instead of gas, the evaporator coil is usually built in with the blower motor and the heat strips. The evaporator coil is made of copper tubing, a metering device, a drain pan, and fins. When the refrigerant enters the coil it is in a liquid form, it flows through a metering device that regulates how much refrigerant can pass through, like a hose nozzle. When the refrigerant goes through through the metering device its pressure is reduced and sent through a series of copper pipes which have fins attached to them. As the warm air from your house is blown across these pipes and fins, the refrigerant pulls the heat from the air, causing the refrigerant to boil from a liquid to a gas, and the air to cool. When the air is cooled it looses some of the water it holds, the water accumulates on the fins and drips down into the drain pan, then it flows down a pipe into your sewage, Buffalo Grove, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates serviceman,service repair and installation Lennox
Gas furnace- This is the equipment that is installed in a closet or in the attic. It contains a gas valve, blower motor, blower wheel, heat exchanger, burners, either a standing pilot, electronic ignition, or hot surface ignition, several limits and safeties, and electronic controls. A Carrier gas furnace is pictured here. Mouse over the unit to see the names of all the different parts, Chicago , IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates servicing, service repair and installation luxaire
Gas valve - This controls the flow of gas to the burners. Located in the furnace, it takes the gas that is piped into your house and sends it to the burners at a lower pressure. Des Plaines, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates trouble shooting service repair and installation Maytag
Gas flex line - This is a flexible tube that allows an easy connection from the gas line to the furnace. The proper connection should never be made inside the furnace, there should be black pipe coming out of the furnace. The flex line should only be used as a transition between the black pipe from the house to the black pipe coming out of the furnace. Deerfield, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates repairing, service repair and installation NuTone
Heat exchanger - Inside your gas furnace you have two separate areas. On one side there is the fire, and on the other side is the air that carries the heat through the house. When the gas burns, it gives off carbon monoxide and obviously you do not want this to get into the air that goes into your house. This is where the heat exchanger comes in. It is a metal chamber that heats up from the fire and gives the heat to the air being blown across it, always keeping the air and the fire apart. On a heat check, the most important thing that a serviceman checks for are holes and cracks in the heat exchanger, these can allow air to be blown on to the flame, or carbon monoxide to get into the air flow. These cracks are usually formed due to lack of maintenance. When the heat exchanger heats up and cools down it expands and contracts. When the heat exchanger is dirty or not heating evenly, the expansion and contraction is uneven. This stresses the metal and will eventually cause it to crack. Elk Grove , IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates fixing, service repair and installation Payne
Heat pump - Just like a condensing unit except it has the ability to reverse the flow of refrigerant to provide heating in the winter. A reversing valve is what routes the refrigerant for heating or cooling. Heat pumps are usually used when natural gas is not available to the home. It is cheaper to run a heat pump than straight electric heat, however at lower temperatures a heat pump cannot put enough heat into the air and is forced to use electric heat to supplement it. The air from a heat pump is much cooler than from a gas heater, causing complaints such as the house feels drafty. This is why a gas furnace should be used instead of a heat pump wherever possible. Evanston IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates cleaning service repair and installation Rheem
Hot surface ignitor - Part of a gas furnace, it is what lights the gas on fire. Made of a ceramic composite that gets extremely hot when electricity is applied to it. When the furnace gets a call for heat ,it energizes the circuit to the hot surface ignitor. When the ignitor is hot enough, the gas is blown across it causing the gas to ignite, and the fire to go into the heat exchanger. The ignitor is then turned off until the next call for heat. They are very delicate and can shatter easily from uneven heating or any physical blow. You must be careful to never touch it because even a tiny amount of oil from you hands can cause it to heat unevenly and shatter. Glencoe, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates checking, service repair and installation Tappan
Inducer motor - Small motor located inside a gas furnace. It has a blower attached on each end. One blower is for cooling the motor itself, it is usually plastic and can be seen when the furnace door is open. The other blower is for pulling the heat from the burners, through the heat exchanger, and out a vent pipe. Glenview, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates replacements service repair and installation Tempstar
Pressure switch - Used to verify the inducer motor is operating and that the heat exchanger is under pressure. It has a small hose that goes to the inducer chamber. When the inducer motor comes on a diaphragm pulls a switch closed due to the suction from the hose. Arlington Heights, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates installations, service repair and installation Trane
Refrigerant - Chemical that transfers heat. Most residential systems use chlorodifluoromethane which is commonly referred to as Freon or R-22. The new environmentally sound refrigerant is a mixture of difluoromethane and pentafluoromethane which is commonly referred to as R-410A or Puron. This is what runs through your system allowing it to transfer heat from your house to the outside. It travels from the compressor through the condenser coils, where it is changed from a hot gas into a liquid, then through the liquid line, past a metering device and into the evaporator coil, where it is changed back into a gas, through the suction line, and back to the compressor to start all over again. Buffalo Grove ac hvac rooftop units residentail and commercail heating and air conditioning free estimates air conditioning service repair and installation Weather King
SEER - SEER stands for Seasonal Energy Efficiency Rating. Electricity is purchased in a unit/measurement called Watts. Whereas the amount of air conditioning is expressed in BTUs(British Thermal Units). The SEER lets you convert watts to BTUs. For example, if you had a 14.0 SEER unit, you would get 14 BTUs for every watt of power, so the higher SEER the better. Currently the lowest SEER is 13.0 and the highest is 21.0. The higher the SEER, the higher the cost will be to initially install the better equipment. You should take into account how long it will take you to start getting paid back on your initial investment before you decide what SEER you should buy. Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates heating service repair and installation Westinghouse
Thermostat - This is where you interface with the air-conditioning system. It should be mounted at eye level, near a return air grill, and away from any outside doors, heat sources, or windows. This will make the thermostat read the overall temperature of the house more accurately. Thermostats range from simplistic to extremely complicated with the price rising with the complexity. Some of the optional features on the newest thermostats include: outdoor temperature sensors, automatic changeover from heat to cool, humidity controls, dirty filter warnings, seven day programming schedules, extra large displays and buttons, backlights, and PC connections. Pictured is one of Carriers better thermostats, it has most of the optional features described above. Deerfield, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates furnace service repair and installation York
Thermostatic expansion valve - (TXV) A type of metering device. It controls the flow of refrigerant going into the evaporator coils. Unlike a fixed metering device that allows a set amount of refrigerant to flow through it, the TXV uses a sensing bulb to detect the temperature of the refrigerant leaving the coil and adjusts the flow accordingly. This allows for optimal efficiency and should be used when a condensing unit with a SEER rating over 13.0 is used. Des Plaines, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates cooling service repair and installation AirEase
Vent pipe - The pipe that carries the carbon monoxide out of your house. This is another part that needs to be checked every year to ensure that it has not come loose. Another common problem are birds. They will make a nest in the top of the vent pipe and this will keep the carbon monoxide from getting out of your house. Your serviceman will be able to tell if there is any blockage through simple tests.
Variable-speed blower motor - The term variable-speed blower motor refers to the furnace's indoor blower motor, which moves at different speeds to control constant air flow. ECM motor, DC motor, and variable speed motor are all different names for the same type of the furnace motor. Better airflow control results in energy efficiency. Evanston, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates professionals, service repair and installation American Standard
A contactor is an electrically controlled switch used for switching an electrical power circuit, similar to a relay except with higher current ratings. A contactor is controlled by a circuit which has a much lower power level than the switched circuit. Contactors come in many forms with varying capacities and features. Glencoe, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates specailists, service repair and installation Ameristar
Every computer has a cooling fan inside the case, designed primarily to prevent the CPU from overheating. Cooling fans may bring cool air into the computer, draw hot air out of the computer, or as part of a heat sink, which is a special product designed to draw heat away from a particular computer component, Glenview, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates maintenance, service repair and installation Arcoaire
The system is made up of passages inside the engine block and heads, a water pump and drive belt to circulate the coolant, a thermostat to control the temperature of the coolant, a radiator to cool the coolant, a radiator cap to control the pressure in the system, and hoses to transfer the coolant from the engine to and back, Harwood Heights, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates repairman service repair and installation Armstrong
A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. Couplings do not normally allow disconnection of shafts during operation, however there are torque limiting couplings which can slip or disconnect when some torque limit is exceeded. Highland Park, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates technicians, service repair and installation Bryant
While in this mode, the thermostat (a.k.a. cold control) cycles the compressor and fan motors on and off to maintain an appropriate temperature. The defrost timer eventually switches into defrost mode and supplies power to the defrost heater(s) to melt any frost that has accumulated on the evaporator (cooling) coil. Kenilworth, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates serviceman,service repair and installation carrier
A diffuser is the mechanical device that is designed to control the characteristics of a fluid at the entrance to a thermodynamic open system. Diffusers are used to slow the fluid's velocity and to enhance its mixing into the surrounding fluid. Lincolnwood, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates servicing, service repair and installation Comfortmaker
If you have, you most definitely need to replace it before your furnace will work again. The draft inducer assembly is a key component part to the furnace system. It is the fan that pulls the exhaust fumes and heat through the heat exchanger and forces it out the flue. Morton Grove, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates trouble shooting service repair and installation Concord
In modern plumbing, a drain-waste-vent (or DWV) is part of a system that removes sewage and greywater from a building, and regulates air pressure in the waste-system pipes to aid free flow. Mount Prospect, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates repairing, service repair and installation Daikin
Changing the state of the refrigerant in the evaporator coils is as important as the air flow over the coils. Liquid refrigerant supplied to the coils by the expansion valve expands to a vapor as it absorbs heat from the air. Niles, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates fixing, cleaning service repair and installation day and night
On furnaces, a fan limit switch uses a heat sensor to detect the temperature of the air passing through the valve that the switch is affixed to. Its purpose is to detect when the air in the furnace is warm enough to circulate into a home. Without the fan limit switch, the furnace would blow cold air. Norridge, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates checking, service repair and installation Fraser Johnstone
A filter-drier in a refrigeration or air conditioning system has two essential functions: one, to adsorb system contaminants, such as water, which can create acids, and two, to provide physical filtration. Northbrook, IL ac hvac rooftop units residentail and commercail replacements service repair and installation Frigidaire
Wires and other components can catch fire when exposed to furnace flame roll out. Many furnaces have a flame roll out switch that cuts off gas to the burners when flame roll out is detected through temperature sensors, Palatine, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates installations, service repair and installation Gibson
Flame sensors, whether they are used in a home furnace or on a large industrial boiler, indicate the presence of a flame and are part of the safety circuit. If the flames go out and the furnace or boiler continue to feed the unit with fuel, a catastrophic explosion could occur. The flame sensor sends an electrical signal to a central controller. This central controller operates the gas or fuel valves for releasing the combustible materials into the burning chamber of the furnace or boiler. Upon an initial signal, the flame sensor is placed on a timer. During this "ignition period" the reading from the flame sensor is ignored until a large flame can be "seen" by the sensor. Once the timer has elapsed, the signal from the flame sensor is then constantly read as to monitor the burning of the combustible materials. Park Ridge, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates air conditioning service repair and installation Goodman
This arrangement is what we mean by a heat exchanger: the gas jets cool down and the water heats up. A heat exchanger is a device that allows heat from a fluid (a liquid or a gas) to pass to a second fluid (another liquid or gas) without the two fluids having to mix together or come into direct contact.
The AC condenser converts the AC gas (refrigerant) into a liquid form. In this process, it generates a lot of heat in the AC system. The job of the AC condenser fan is to remove the heat from the AC system by blowing air across the condenser. Prospect Heights, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates heating service repair and installation Heil
In systems involving heat transfer, a condenser is a device or unit used to condense a substance from its gaseous to its liquid state, by cooling it. In so doing, the latent heat is given up by the substance, and will transfer to the condenser coolant. Rolling Meadows, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates furnace service repair and installation Lennox
A contactor is an electrically controlled switch used for switching an electrical power circuit, similar to a relay except with higher current ratings. A contactor is controlled by a circuit which has a much lower power level than the switched circuit. Contactors come in many forms with varying capacities and features.
The use of a low-pressure control to maintain box temperature on commercial medium-temperature applications has been a common practice for many years. It allows remote condensing units to be controlled without any additional control wiring between the refrigerated box and its compressor. Skokie, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates cooling service repair and installation luxaire It works on the principle that there is a direct relationship between the pressure of the saturated refrigerant in the evaporator and its temperature.
A typical low-pressure control has two setpoints: its cut-in and its differential. In order for the control to work properly, both the cut-in and differential setpoints need to be set properly.
Most manufacturers have stated values for the proper setpoints for their systems. However, these values usually only work well on self-contained or close-coupled systems. If the condensing unit is remotely located, the stated values may cause problems with the cooler.
The low-pressure cutout switch is also known as a suction pressure control switch. It is the control that causes the compressor to go on or off as required for normal operation of the refrigeration plant. This switch is connected to the suction side of the compressor and is actuated by pressure changes in the suction line. When the solenoid valves in the lines to the various evaporators are closed so that the flow of refrigerant to the evaporators is stopped, the pressure of the vapor in the compressor suction line drops quickly. When the suction pressure has dropped to the set pressure, the low-pressure cutout switch causes the compressor motor to stop. When the temperature in the refrigerated spaces has risen enough to operate one or more of the solenoid valves, refrigerant is again admitted to the cooling coils, and the compressor suction pressure builds up again. At the desired pressure, the low-pressure cutout switch closes, starting the compressor again and repeating the cycle. Wheeling, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates heating and air conditioning free estimates experts, service repair and installation Maytag
A high-pressure cutout switch is connected to the compressor discharge line to protect the high-pressure side of the system against excessive pressure. The design of this switch is essentially the same as that of the low-pressure cutout switch. However, the low-pressure cutout switch is made to CLOSE when the suction pressure reaches its upper normal limit. The high-pressure cutout switch is made to OPEN when the discharge pressure is too high. As mentioned before, the low-pressure cutout switch is the compressor control for normal operation of the plant. The high-pressure cutout switch, on the other hand, is a safety device only and does not have control of compressor operation under normal conditions. Wilmette, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates professionals, service repair and installation Payne
TIME DELAY CONTROL
The only time you would care that there be a time delay for pressures to equalize is if you are running a single phase scroll compressor. When a scroll compressor off cycles it will spin backwards a bit as pressure equalizes, if you short cycle a compressor and energize it while it's spinning backwards it will continue to run backwards until it trips on internal overloads. This will destroy your scroll compressor. This is the only time you will see a time delay specifically for the equalization of pressures.
More likely a time delay would be used in general for anti-short cycling. When a compressor is energized it takes 4 to 5 times the rated amperage to get it up and running at design speed, this is called in rush current. In rush current can be detrimental to any motor if you sit there and let it short cycle it, especially in a system that keeps tripping on a low pressure safety. Why a kid would sit there and play with the thermostat is beyond me...
Your not going to blow a fuse by starting a system with a pressure differential on it. There are systems that utilize a pump down solenoid to isolate refrigerant in the condensor during off cycling. The compressor in some of these designs actually is controlled solely off of the LP safety and will continue to pump down at times when the LL Solenoid is faulty and leaks by allowing pressure to rise in the evap during an off cycle. You see this a lot in older Liebert Deluxe systems with recip compressors.
The compressor saver is an electrical component that is attached to the condensing unit of the air conditioner. This device allows the compressor to start up quickly and use less power during the process. It ultimately lets you save money on your energy bill. Winnetka, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates specailists, service repair and installation Trane
A motor capacitor, such as a start capacitor or run capacitor (including a dual run capacitor) is an electrical capacitor that alters the current to one or more windings of a single phase AC induction motor to create a rotating magnetic field.
A crankcase heater's sole purpose is to prevent refrigerant migration and mixing with crankcase oil when the unit is off, and to prevent condensation of refrigerant in the crankcase of a compressor. The crankcase heater keeps refrigerant at a temperature higher than the coldest part of the system.
A condenser unit used in central air conditioning systems typically has a heat exchanger section to cool down and condense incoming refrigerant vapor into liquid, a compressor to raise the pressure of the refrigerant and move it along, and a fan for blowing outside air through the heat exchanger section to cool the ..
An example of an externally fitted AC unit which uses a heat pump system. A heat pump is an air conditioner in which the refrigeration cycle can be reversed, producing heating instead of cooling in the indoor environment. They are also commonly referred to as a "reverse cycle air conditioner". Northfield, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates experts, service repair and installation AirEase
A condensate pump is a specific type of pump used to pump the condensate (water) produced in an HVAC (heating or cooling), refrigeration, condensing boiler furnace or steam system.
The coil, also known as an evaporator coil or an indoor coil, is the unsung hero of any home heating or cooling system. Its job, heat transfer, is one of the most important factors in achieving heating and cooling efficiencies that keep your home comfortable all year long, Wrigleyville, Chicago, ac hvac rooftop units residentail and commercail heating and air conditioning free estimates professionals, service repair and installation Amana
The pressure relief valve (PRV) is a type of valve used to control or limit the pressure in a system or vessel which can build up for a process upset, instrument or equipment failure, or fire. The pressure is relieved by allowing the pressurised fluid to flow from an auxiliary passage out of the system.
An industrial furnace or direct fired heater, is an equipment used to provide heat for a process or can serve as reactor which provides heats of reaction. Furnace designs vary as to its function, heating duty, type of fuel and method of introducing combustion air.
A furnace's heat exchanger is a set of tubes or coils that are looped repeatedly through the air flow inside your furnace for the purpose of heating air. Simply put, the furnace heat exchanger is the part of your furnace that actually heats the air, Edgewater, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates maintenance, service repair and installation Ameristar
If you have, you most definitely need to replace it before your furnace will work again. The draft inducer assembly is a key component part to the furnace system. It is the fan that pulls the exhaust fumes and heat through the heat exchanger and forces it out the flue. Rogers Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates repairman service repair and installation Arcoaire
If the high limit switch was bad, the furnace should not fire. When the high limit switch trips, the flame/heating element will be shut off and the blower will continue to run to clear the heat. The blower will continue to run until either the system is reset, or the limit switch closes, Lake View, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates technicians, service repair and installation Armstrong
A furnace pressure switch is there to tell the furnaces control board that the inducer motor is working. A inducer motor spins and pulls out toxic gasses that come from burning gas and pushes it all out a vent creating a vacuum.
A flame sensor "senses" a weak DC signal from the AC power sent to the ignitor which via the phenomenon of flame rectification in which the polarity of power sent through a flame is rectified to DC, flame is a poor conductor so the signal is mere micro amps .3 to .5 usually and the flame sensor is nothing more than a rod insulated y a ceramic base so it is not in contact with anything , the flame sensor is a rod that's all and wired to the sensor termination the control board. if the unit has no flame sensor it uses the burner ground or burner assembly to transmit this signal, this is why cleaning the sensor with steel wool will often fix a flame sensing fault. Lincoln Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates serviceman, service repair and installation Bryant
A gas valve for a furnace is made up of four major parts that include a manual valve, a regulator, a solenoid valve and a pilot safety. The manual valve is turned by hand to shut off gas supply to the furnace completely. In older furnaces, this valve is a component of a gas chain, and it is open when the handle aligns with the gas pipe. The regulator reduces gas pressure from a gas line to a more manageable pressure for the manifold to distribute to the burners. Gold Coast, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates servicing, service repair and installation carrier
The solenoid valve opens when the thermostat signals that heat is needed, allowing gas to flow to the burners as long as the other valves are open. A pilot safety is held open by a voltage created by a burning pilot flame. When the pilot is not lit, the valve shuts off the supply to prevent gas from leaking into the outside environment. It may include either a button or an adjustable knob that allows gas to flow to the manual valve when pressed or turned. Old Town, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates trouble shooting service repair and installation Comfortmaker
When someone refers to a one-stage (aka single stage) or a two-stage furnace, they are actually talking about the burner section inside of the furnace, or more specifically the valve that controls it. Your average, every day, old fashioned furnace is a single-stage or one-stage furnace. What this means is that the valve that controls the amount of fuel that enters the burner in your furnace has two different positions: open and closed. When this valve is open, fuel (usually natural gas or propane) travels through the valve to the pilot light where it ignites, and burns inside the burner section of the furnace. The now heated gases then heat up the heat exchanger, which is where the air from your home is actually heated (for more information on what a heat exchanger is and how it works, see: Furnace Heat Exchanger). When the valve is in the closed position, the heat is off because no fuel is being provided to the burners and heat exchanger. Bucktown, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates repairing, service repair and installation Concord
A two stage furnace actually has three positions to this valve: full open, partially open and closed. What this allows your furnace to do when it turns on is move this valve to one of it’s two open positions (hence the term, ‘two-stage’). This allows your furnace to operate at full blast, like your old fashioned furnace, or in a low position that only provides about 60 to 65% of the heating power of the full-open position. Therefore a two stage furnace has two heat settings that are used automatically, high heat and low heat. Logan Square, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates fixing, service repair and installation Daikin
A two-stage furnace works by using a different set of programming than a normal one-stage furnace. Simply put, when it is only moderately cold inside, then the furnace’s control board opens the fuel control valve to the partially open position, and heats the house to the desired temperature before turning off. If the house is cooling a lot quicker than normal, for instance on a miserably cold day in the dead of winter, then the control panel opens the valve to the full open position, where the furnace runs full blast to heat your home. Avondale, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates cleaning service repair and installation day and night
How does your furnace do this? Well much of the technology is proprietary, but the gist of it is that the position of your valve is based on how often the thermostat is kicking your furnace on and off, and the difference between the temperature set on the thermostat and the actual temperature of the house. If it is only moderately cold, for instance, then this would not require a full open position on the furnace. You can kind of think of the operation of a two stage furnace as being kind of like the gas pedal in your car. If you are driving on the Autobahn in Germany, then you will probably need to floor the gas pedal. However, you don’t need to floor it when you are driving through the suburbs of Santa Clarita, California (although it seems as though people still do sometimes). Just like your gas pedal, a two stage furnace can vary the amount of fuel that is used.
There are three types of furnaces available on the market today. The system that will work best for your home is based on a number of factors, including heating requirements, existing duct work and insulation, size and levels of your home, budget, and more.
Before you invest in a new heating system for your home, you should consult with a professional HVAC contractor, such as ARS (American Residential Services) Heating, Cooling and Plumbing. The Comfort Advisors and Service Technicians at ARS have a tremendous amount of experience in the industry analyzing homes to help a homeowner determine the best home heating system option.
Single stage furnaces, also known as single speed furnaces, only have one stage of heat output - high. They continually disperse the maximum amount of heat that the furnace is designed for, regardless of the temperature outdoors or in certain areas of your home. Imagine yourself going from a walk to a full out sprint every time you wanted to work out. This is how a single stage furnace operates - there's an "off" speed, and then an "on" speed with nothing in between.This can be extremely costly for your energy bills in the winter since every time your furnace turns on, it's dispersing the most amount of energy it possibly can. Irving Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates checking, service repair and installation Fraser Johnston
Two stage furnaces, also known as two speed furnaces, operate much more efficiently than a single stage furnace. The first stage of this type of furnace operates the majority of the time in most climates, and runs at about 65% of the furnace's full capacity. When the temperature outside becomes extremely cold and the first stage is not sufficient enough to heat your home, the second stage kicks on to provide the additional heat requirements. A 2 stage furnace provides the right amount of heat to efficiently satisfy your home and family's needs.In addition, a 2 stage furnace is much quieter since it doesn't operate at 100% capacity every time it runs, and creates less carbon dioxide emissions for the environment. Albany Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates replacements service repair and installation Frigidaire
Unlike a single stage furnace and 2 stage furnace, a variable speed furnace doesn't actually refer to the number of stages your furnace goes through to provide heat; rather it refers to the fan motor in the furnace. In variable speed furnaces, the fan motor can move at different speeds to control the amount of heated air dispersed throughout your home. Better airflow results in a more comfortable environment in regards to both temperature and humidity. Humboldt Park, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates installations, service repair and installation Gibson
Even when the furnace is not "on," the motor in a variable speed furnace can still operate to continually circulate air throughout your home. This feature allows for healthier indoor air quality since your air is constantly passing through the filter in your HVAC system and being cleaned of such things as bacteria, viruses, and mold spores. In addition, this advanced control over airflow can eliminate the need for the furnace to operate as often since air is constantly being distributed throughout your home. This can result in less energy consumption and lower utility bills every month.Some of the variable speed furnaces available are the most intelligent on the market. Though they may cost slightly more upfront, their savings can quickly be realized in saved energy costs over the lifetime of the equipment. West Town, Chicago, IL ac hvac heating rooftop units residentail and commercail and air conditioning free estimates air conditioning service repair and installation Goodman
The primary function of a thermostat is to maintain a minimum operating temperature in your car's engine. When you start your engine cold, the antifreeze / coolant mixture is kept within the engine by the thermostat. When the coolant temperature reaches the specified opening point of the thermostat, it opens. Near North Side, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates heating service repair and installation Heil
A transformer is an electrical device that takes electricity of one voltage and changes it into another voltage. You'll see transformers at the top of utility poles and even changing the voltage in a toy train set
A two-stage gas valve starts at 65% capacity, only when required does the 2nd stage gas kick in (full capacity). On an average day, your 2nd stage-gas valve will usually turn on during the cold morning, but the sun will come out and your furnace will usually run on the 1st stage for the reminder of the day. This will save gas, and save you money. Ravenswood, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates cooling service repair and installation luxaire
Another benefit of a two-stage gas valve is quieter operation from the furnace, and a more consistent temperature with no temperature swings.A modulating-gas valve introduces more stages, this allows precision temperature control. The benefits of a modulating-gas valve are they are among the quietest furnaces on the market; they reduce gas bills a little more, and are capable of controlling the temperature in your house to within .03 degrees. Dunning, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates replacements service repair and installation Ameristar
In a standard-efficiency 80 percent furnace, 20 percent of the heat energy contained in the natural gas is exhausted up the furnace vent. A condensing furnace with an AFUE of 90 percent or above incorporates a secondary heat exchanger to recover that lost energy. Combustion gases are diverted into a condensing phase and heat released as the gases condense to water is extracted by the secondary exchanger. This boosts the furnace AFUE percentage and lowers operating costs. Belmont Central, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates fixing, service repair and installation AirEase
Standard furnaces incorporate conventional single-speed, on/off blower motors. These units produce full blower output when energized and consume about 500 watts of electricity. The abrupt on/off cycles of a standard blower cause noticeable temperature fluctuations in living spaces. Because full-blast air circulation isn’t required to maintain temperatures once a house is fully warmed, single-speed operation also consumes excess electricity. Instead of constantly cycling on and off, electronically commutated blower motors known as ECM units installed in high-efficiency furnaces are programmed to run at a range of speeds keyed to the home’s heating load. These blowers run almost continuously but at variable, lower output to eliminate on/off temperature swings. In turn, they heat the house more consistently. Because ECM technology consumes only about 80 watts, energy savings are substantial compared to conventional blowers. Oak Park, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates experts, service repair and installation Maytag
The gas burner in 80 percent furnaces runs at full output when operating. In moderate climates, total burner output is required only on the coldest days. The rest of the time it’s an energy-waster. A 90 percent furnace incorporates multistage burners that sense the heating requirements of the home and automatically default to a lower, energy-conserving output when conditions allow. This lowers operating costs, conserves resources and reduces carbon dioxide emissions. River North, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates specailists, service repair and installation Payne
A transformer that increases voltage from primary to secondary (more secondary winding turns than primary winding turns) is called a step-up transformer. Conversely, a transformer designed to do just the opposite is called a step-down transformer. North Center, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates maintenance, service repair and installation Rheem
A thermocouple is a safety device that's used to detect whether or not your furnace's pilot light is lit. It contains a metal rod that is placed very close to your pilot light's flame. This rod is connected to your furnace's gas valve. West Ridge, Chicago, IL ac hvac rooftop units residentail and commercail heating and air conditioning free estimates technicians, service repair and installation Tempstar
