Know How the Evaporator Coils And Condenser Coils Work to Cool Your Home.

You need to know some basic things about your home devices, including your air conditioner. If the home cooling system at your home is doing its job, but the device’s inner working mechanism is still a mystery to you, we are here to help. This article will talk about evaporator and condenser coils, two crucial parts of your AC. No matter how efficiently your AC works, you need to perform frequent maintenance and cleaning of your AC to keep the entire system and the evaporator and condenser coils at their best condition.

What Is an Evaporator Coil?

In your air conditioner, where the refrigerant absorbs heat, the evaporator coils are installed. And that is also the same location from where the cold air comes to your house. The evaporator coil is generally located near or inside the air handler and where the blower fan is.

The evaporator coil is made of copper, aluminum, or steel based on your air conditioner’s brand and model. But necessarily it is made of metals, as metals are good conductors of heat. Most of the residential AC evaporators are set into panels, positioned in the form of “A,” and the evaporator are consisting of U-shaped tubes. The panels are lined with thin metal pieces, which are known as fins.

How Do Evaporator Coils Work?

While your air conditioner runs, your air conditioner’s compressor pulls the cold and low-pressure liquid refrigerant through the tubes of the evaporator coil. The refringent passes through the expansion valve before entering the evaporator coil. And when this valve relieves pressure from the liquid refrigerant and rapidly cools the evaporator coil. The refrigerant cools the expansion valve, and it allows us to absorb heat from the air.

What Is A Condenser Coil?

The outdoor unit of your air conditioner is also known as the condenser unit. The condenser remains inside the large box installed outside with many other components like condenser tubes, fins, compressor, fan, and copper tubing. There are valves and switches as well in the condenser unit.

How Do Condenser Coils Work?

Once the refrigerant absorbs heat from the home air, it travels to the outdoor unit through the copper tubes. The warm and low-pressure refrigerant gas enters the compressor here. And compressor tries to convert the refrigerant into a hot and high-pressure gas.

The gas then departs the compressor and drifts into the condenser coils. And this is the place where the refrigerant releases most of the heat absorbed from the home air. As the fan blows air on the top of the condenser unit, the refrigerant loses heat. The refrigerant repeats the process of losing heat many times, and as it cools, the refrigerant gets converted to a hot liquid from hot gas. And from there, it flows back through a copper tube and reaches the expansion valve of the indoor unit near the evaporator coil.


You need to take care of the evaporator coils and condenser coils to upkeep your air conditioner’s efficacy. Using AC Condenser Filter can help to protect the outdoor unit from possible clogging. Call Air Sock Filter to learn more about mote methods to protect your condenser unit.