What Are the Main Components of a Commercial HVAC in Lafayette?

The commercial HVAC system has a number of parts. Each of these needs to work together smoothly in order to have a properly functioning system. If any of the components breaks down, you can expect the rest to follow. There are a number of key components of a commercial HVAC in Lafayette.

Air Conditioner

This is meant to dehumidify the air and remove heat. An air conditioner alone does not cool the space, but works with many other subsystems to regulate temperature.


A compressor is the main component to the cooling cycle and begins the whole process to manage temperatures. Though it is considered the heart, when there is a problem with the compressor, it usually means there is another underlying issue. It is therefore important to seek professional help such as Calcasieu Mechanical Contractors.


This is the heat exchanger of the air conditioning unit. It removes heat from the building and transfers it out.

Thermal Expansion Valve

The expansion valve is important to the working of the condenser. It removes pressure from the liquid refrigerant to allow expansion to take place, turning the liquid into vapor.

Air Handler

The air handler is responsible for circulating air through the system. It is connected directly to the ductwork. It pushes cooled or heated air into the building and then returns it back into the system.

Terminal Units

This consists of an air filter, coil, and blower, and varies in size. They can be used to control temperatures in a single room.


Their function is to remove heat from the liquid in the structure’s pipes. In an air-cooled chiller, the condenser coils are cooled by fans.

Duct System

Ducts can be very old and possibly predate many current commercial HVAC in Lafayette. However, they are important when talking about HVACs as their main function is to distribute air throughout the building.

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