man relaxing in air conditioning

How Does an Air Conditioner Work?

The temperatures are hitting record highs across the states and many homes are running some kind of air conditioner to combat the smoldering heat. While we are all grateful that your air conditioner runs, the team at Air Houston Mechanical LLC in Humble would like to teach you how it works.

The Basics

There’s plenty of science regarding keeping your house cool. Your air conditioner operates in a comparable way to your refrigerator, of course your AC has a more difficult task to handle. Both your fridge and AC cool with a consistent loop of refrigerant, in your air conditioner this refrigerant loops from inside to outside your home. This refrigerant quickly converts from a liquid to gas and back to a liquid again. It enters your home as a sub-cooled liquid and as it evaporates it absorbs heat from your indoor air and expands back into vapor. This vapor then travels back to your outdoor unit where the heat is released and is then condensed back into a sub-cooled liquid.

Four Components

There are 4 core components to your air conditioner unit: a compressor, an evaporator coil, the condensing coil and an expansion valve.

The evaporator coil is the place your refrigerant evaporates from a sub-cooled liquid into a super-heated vapor. This component can be found inside your home, in your garage or even in your attic. Warm air transports throughout the cold evaporator coil and the heat is separated from the air. This cooled air is then sent throughout your home.

Your compressor is located in your outdoor condensing unit. The super-heated vapor from your evaporator coil goes into the compressor which surges the pressure of the vapor until it is converted into hot, high pressure vapor. The hot vapor then goes back into the condenser coil where less hot outdoor air flows across the coil, heat is released outdoors and the refrigerant is converted back into a sub-cooled liquid. This sub-cooled liquid is then returned to the indoor evaporator coil and through an expansion valve or metering device. The process is then repeated.

That completes your physics lesson of the day…your air conditioner runs on an relentless loop of science. We realize that it’s not as top-priority to you how it works, but that it’s working. If you’d like to discuss staying cool and comfortable in Humble give us a call at 832-777-1521 or set up an appointment using our online scheduler. With the help of our team and science we’re going to make it through this sweltering summer.