How Your Air Conditioner Works

April 9, 2018 Published by Leave your thoughts

You hit the “cool” button and your rooms are comfortable even in mid-August. Have you ever wondered how this happens? Exactly how does your air conditioning service in Lexington, KY cool the air in your home to make the summers more bearable?

While some of the mechanics are complex, a quick overview will help you better understand the workings of your system. This can prove helpful when troubleshooting your system or when partnering with a professional to answer questions and complete maintenance or repairs on your HVAC equipment. Here are the highlights.

Chemical Cooling

The temperature in your home drops at the touch of a button. It might feel like magic, but it’s actually science and mechanics at work. To create the cool environment you enjoy, your air conditioning unit uses chemicals to transfer heat from inside the home to the outside. It does this using three main components: the compressor, the condenser and the evaporator.

The Fluid-Gas Cycle

Your AC unit contains cooling fluid. The compressor squeezes, or compresses, this liquid. As the liquid is put under pressure, the temperature rises. It exits the compressor as a high-pressure gas. From there, it moves to the condenser. There, it cools and changes from a gas to liquid. The coolant then goes into the evaporator, where the pressure drops. The liquid then evaporates.

This evaporation process extracts heat from the surrounding air. The evaporator has metal fins that help exchange the thermal energy produced with the air surrounding it.

Once the coolant leaves the evaporator, it is a gas again. It goes back into the compressor and restarts the cycle. A fan circulates air across the evaporator and inside the property. The AC unit brings air into the ducts and uses this air to cool the gas in the evaporator. It removes the heat from the air and forces the cooled air through ducts into the house.

Once your thermostat senses that the air inside the home has reached the desired temperature, the air conditioner shuts off. When the temperature rises, the cycle starts up again.

Part Locations

Where can you find each of these parts? The evaporator coils and condenser are part of the outdoor air conditioning unit. The blower motor and thermostat are inside the home. Also found inside the home are the air supply and return ducts and vents that help distribute the cool air throughout the home and bring warm air outside. The HVAC filter, which must be checked and changed regularly, is also located inside the home at the main unit.

Get More Info

Would you like to know more about the inner workings of your AC or get help with professional air conditioning service in Lexington, KY? If you have any questions or need service for your system, contact the experts at Cross Heating & Air Conditioning Services, LLC. Our family owned and operated business is your go-to source for all things HVAC. Reach out to us today for a consultation, repairs or installation. We look forward to keeping your unit in top condition.

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