3 Important Furnace Parts and How They Work in Your HVAC System

By February 18, 2021February 21st, 2021Preventative Maintenance
furnace parts

Are you having trouble with your heating system? If so, problems are likely to be stemming from one of the three main parts.

If you know what they are, it makes it easier to isolate the problem. 

These three areas create and distribute the heat, working in synchronization. If one does not function, the others will cease to work as well.

Below, we’ll go over the three most essential furnace parts. 

Thermostat

The thermostat is one of the most important components of a furnace system. Without it, you would not be able to control the temperatures in your home. The whole furnace will not start until it gets a signal from the thermostat to turn on. 

Once this signal is sent, a gas valve will open and ignite the burner. The gas valve and thermostat will work in tandem, deciding how much gas to release into the combustion chamber to keep the correct temperature. 

Heat Exchanger

Once the thermostat and gas valve have caused the combustion, the heat exchanger starts to warm. The warmth it produces will begin to circulate through a series of looped tubes. This will transfer the heat to the air. 

If the heat exchanger does not work, you will not get any warmth as the combustion can not make the transfer. If your heat exchanger is cracked or leaking, this heat will also escape. This can be one of the most dangerous parts of a gas furnace. 

The heat exchanger needs to be well maintained. Not only because it provides warmth but because gases can build up if circulation is not being performed correctly. Gasses should be venting safely out of the property as this occurs and not pooling in the exchange itself. 

Blower Motor

Once you have warm air, you need something to direct it through the rest of the house.

The blower motor does this, and it pushes the hot air through the ductwork in your property. This warm air will come through the vents, and once your property reaches the desired temperature, the thermostat will shut off the system.

Other Important Parts

Problems with your furnace will most likely come from one of these major parts. However, you should check a few other areas if the problem does not seem to come from one of them. 

The control board is an electric furnace component that checks on signals inside and outside the system. It is the part that turns things on and off when the thermostat wants heat. Without it, the furnace would not know what to do. 

The flame detector is an important safety feature. If the igniter does not work, it shuts off the gas flow preventing leakage. If it is faulty, the system may think a flame is not detected when it actually is. 

Furnace Parts Safety

If problems occur with your furnace parts, you must call a professional.

Furnaces not only use heat, but they also use flammable gas. You need to ensure your home is kept safe at all times with regular service. 

Best Air & Heat should be your first stop when looking for HVAC maintenance, repairs, and furnace replacement parts. We serve the Cold Spring and Livingston areas and are the number one in our business.

Click here to learn more about our services and contact us today.