AC 101

Most people, if asked, would say that air conditioners pump cold air into your home. While that isn’t exactly a wrong answer, it’s not exactly correct either. Mostly an AC unit works by transference of heat.

When heat is removed, the cool air remains and lowers the temperature in your home. To better grasp the concept lets take a look at the components involved: The outdoor unit and the indoor unit. They must work together, all year long here in Florida, to keep your home cool and your family comfortable.

The Outdoor Unit

The outdoor unit is usually placed behind the back or side of your home. It is where the heat from inside your home is dispersed. This part of the unit contains the condenser, compressor, coil and a fan. The heat taken from your home’s internal air is transferred to the refrigerant and then pumped to the outdoor unit. As this heat is absorbed and moved by the refrigerant to the outdoor coil, it passes through the compressor.

The compressor in your air conditioning system has the singular job of circulating the refrigerant through the entire system. This is important as it recirculates, reusing the refrigerant to cool our house over and over again. The refrigerant is then compressed under a higher pressure. With that pressure, it is passed through the outdoor condenser. As this takes place, a small motorized fan delivers air across the condenser coil. This causes it to cool.

As the process completes, the heat from inside your house is dispersed to the air outside your house. The refrigerant is then pumped back indoors and the whole process repeats.

The Indoor Unit

The indoor unit is usually located in a closet or ceiling area that is easily ventilated. The inside unit consists of a coil box that contains an evaporator.  An evaporator allows the refrigerant (sometimes called Freon™) to absorb and evaporate heat. When the heat is absorbed from inside the house, it leaves only cool air to be recirculated inside of your home.

Refrigerant turns water from its liquid form to vapor as it absorbs the unwanted heat.

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