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It can be helpful to have a basic understanding of the most important components that make up your HVAC unit. By knowing what each part does, you can take the appropriate steps to maintain the HVAC system in your Brooksville, Florida, home.


The thermostat is probably the one part of the HVAC unit that you interact with the most. It is responsible for controlling the heating and cooling of your home. The thermostat directly activates the heat exchanger, telling the HVAC unit when to turn on the heat or air conditioning in your home.


The furnace is a critical component of your unit. Not only does it take up the most space, but it is also directly responsible for pushing heat into your home. Most HVAC units use one of four heating processes: electric resistance, combustion heating, a heat pump, or solar energy.

Heat Exchanger

The heat exchanger is found inside the furnace. When you adjust the thermostat to heat your home, the thermostat activates the furnace, which, in turn, activates the heat exchanger. During this process, the exchanger pulls in air, heats it, and sends it into your home via the vents.

Evaporator Coil

The evaporator coil does what the heat exchanger does, only with the purpose of cooling. This part is also located on the furnace and works by absorbing heat and cooling the air before sending it through your air ducts. When the heated air reaches the evaporator coil, it is cooled and condensation is generated. This condensation helps with the cooling process while also lowering humidity levels.

These are just a few of the important parts involved in the process of heating and cooling your home. Because there are hundreds of parts that make up your unit, it is important to schedule regular tune-ups and inspections with a licensed HVAC technician. Call Crystal Air Conditioning & Heating today at (727) 877-3189 to schedule your HVAC tune-up appointment today.

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