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The Homeowner’s First HVAC Dictionary

Air ConditionersBecoming a homeowner means getting familiar with the mechanical systems of the house. The heating, ventilation and air conditioning system presents a whole new vocabulary of terms. With help from our technicians at Brown Service Company, you can understand what all the HVAC terms mean and learn more about air conditioner maintenance.


HVAC stands for heating, ventilation and air conditioning. It is used to refer to the entire heating and cooling system and the technicians who service them.

Air Handlers

The air handler is responsible for blowing the conditioned or warmed air through the air ducts and into the rooms of the home.

Condensing Units

Condensing units are part of an air conditioning system. They apply pressure to the chemical refrigerant and condense it into a liquid so that it can absorb heat from within the house.


The condensing unit and the evaporator unit both have coils. The coils allow heat exchange with the environment and provide the passageway through which the chemical refrigerant travels.


Air conditioners and heat pumps use a chemical refrigerant to transfer energy from one environment to another. Systems built since 2010 use the environmentally friendly coolant R-410A, also known as Puron.

Air Filters

Heating and cooling systems have air filters. These devices trap particles from the air and help keep the system clean.


When an air conditioner cycles, it condenses moisture out of the air. This liquid is water, which is also referred to as condensate. It drains out of the HVAC system through the drain pan and condensate drain pipe.

Heat Pump

Heat pumps are split heating and cooling systems. They use the same equipment to cool the home in the summer and warm it in the winter.

Learning all about the air conditioner, furnace or heat pump takes a little time. Our Grapevine air conditioner company is here to educate homeowners about proper maintenance and repair of their HVAC systems. For service or installation, call us at Brown Service Company today at 817-284-9204.


Use our form to estimate the initial cost of renovation or installation.

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