How Does Your AC Work?

Your air conditioner keeps your house or office cool during the hot summer months, but have you ever thought about how it works? You might be surprised to hear that your air conditioner and refrigerator operate similarly. However, while your refrigerator cools a small area, your air conditioner can effectively cool your entire home or workplace.


While most people believe that air conditioners work by generating cold air, this isn’t true. Air conditioning systems operate by transferring heat from the inside of your house to the outside. Let’s further discuss how your air conditioner works to keep your home cool.


How Does Your AC Work?


Different parts of your air conditioning system work together to disperse cool air through your home. Here are the working parts of your AC:


1.   Thermostat


The thermostat, usually mounted on your wall, detects and controls the indoor air temperature. When the thermostat detects that the internal air temperature is higher than the temperature you’ve set, it signals the air conditioning system to turn on.


2.   Fan and Filters


The AC fan draws hot air from home through return air ducts. Filters capture dust, debris, and other airborne particles as the air flows through them. After that, the filtered, heated interior air flows through a cold evaporator coil and is forced back into your home by the fans.


3.   Evaporator Coil


The evaporator coil is a heat absorber. Warm air from within your home is taken in through a vent and blown over the evaporator coil, which cools the air before it’s sent back into your home.


4.   Blower Fan


The chilly air is then pushed through the home’s ductwork and into the different living areas by the blower fan.


5.   Refrigerant


The refrigerant inside the evaporator coil changes from a liquid to a gaseous state as it absorbs heat from the passing air. The refrigerant gas moves through a copper tube outside the house and then into the compressor in the air conditioner unit.


6.   Compressor


The compressor compresses the refrigerant gas before sending it to the condenser coil of the outside unit. A strong fan draws the outside air through the condenser coil and releases heat energy outside your home.


7.   Expansion Valve


The refrigerant then converts back to a liquid as it returns to the indoor unit through a copper tube, passing through an expansion valve that controls refrigerant flow into the evaporator coil. The cool refrigerant takes even more heat from the interior air, and the cycle repeats.


The process repeats using the above components until your system maintains the appropriate temperature within your house or office. Your air conditioning system switches off when the thermostat detects the inside temperature has reached the desired level. When the room begins to heat up again, the thermostat reactivates the air conditioner. The process repeats until it maintains the desired temperature again. If you need a reliable Pasadena air conditioning service, we’re here to help!

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