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R-22
common refrigerant used in home AC systems
Refrigerant
Chemical mixture that flows through the system and carries the heat from inside the home to the outdoors
Refrigeration Cycle
Process of a refrigerant that flows through an AC system to cool your home as the refrigerant cycles from liquid to gas, gas to liquid
Return Duct
Transports conditioned air into your home
SEER
Seasonal Energy Efficiency Ratio (SEER) is the US rating of the efficiency of an AC system
Condensate Pump
Removes the water that naturally condensates inside your AC, furnace, or heat pump
Contactor
Controls power to your AC unit and normally carries high voltage
Evaporator Coil
Changes refrigerant from liquid to gas in your AC unit
Fin Coil
Small, thin metal strips that help transfer heat
Humidity
Amount of moisture in the air
R-410A
Common refrigerant blend (R-32 and R-125) used for home air conditioning systems
R-134a
Common refrigerant used in home air conditioning units, especially in retrofit kits for older systems
Condenser Fan
Forces air through the condenser coil in order to cool the refrigerant flowing through the coil
Control Board
Uses complex calculations to help your AC, furnace, or heat pump run more efficiently
Air Handler
Circulates hot or cold air through your ductwork
Condensate Drain Pipe
Allows water from your AC, furnace, or heat pump to drain safely outside your home
Condensate Pan
Collects water from the AC, furnace, or heat pump as it drips from components
Capacitor
Stores electrical energy to be used when your AC system starts
British Thermal Unit
A unit of heat required to raise one pound of water by one degree Fahrenheit
Blower Fan
Circulates air by pulling air through return ducts, and then pushes the air through supply ducts
Temperature
How hot or cold anything is, a measurement of the amount of energy in something
Supply Duct
Transport conditioned air into your home
Spine Fin
Thousands of metal hairs on the condenser coil that more efficiently expel heat
Ductwork
Tubes or pipes used to circulate air into and out of your home