Hansberger Refrigeration Blog: Your AC Repair Resource

The Most Crucial HVAC Part in Your Unit: What Is It?

Your home’s HVAC system is responsible for producing cool or warm air as needed. Several components all work together to keep your Yuma home heated or cooled. Which is the most crucial HVAC part? Find out more about the different components contained in your HVAC equipment.

Main HVAC Unit

The main unit in your HVAC system refers to the air conditioner and the furnace or heat pump, and this is definitely one of the most crucial HVAC parts. Air conditioners keep Yuma homes cool, while furnaces keep them warm. However, if you have a heat pump, that unit handles both heating and cooling.

HVAC Filter

Your main unit can’t work well without a clean air filter. This filter removes dust and other particles from the air, which helps keep these from blowing into rooms, while your heating or cooling system is running. A dirty air filter causes the main unit and the rest of your HVAC system to work harder, which increases wear and tear.

Heat Exchanger

The most crucial HVAC part for your heating system is the heat exchanger. Whether you have an electric or gas furnace, this part is what heats up the air. Your heating system draws in air from outside. Then, the heat exchanger warms it up. Without this component, your furnace wouldn’t be able to heat your home.


The ductwork in your home directs cooled or heated air to vents in different areas or rooms. Having ducts without any leaks is important for ensuring that your HVAC system can deliver warm or cool air to various parts of your home as needed.


Vents allow heated or cooled air to flow into rooms or areas throughout your home. Keeping them clean helps ensure that you won’t have dust or other particles blowing around when your HVAC system is running.


Thermostats give you a way to control the temperature in your home. They send a signal to your HVAC unit to turn on and off as needed.

If you need information on the most crucial HVAC part or service on your HVAC system, contact Hansberger Refrigeration and Electric Company. We handle HVAC repairs, maintenance, and installation for Yuma homeowners.