What Is an HVAC System?

HVAC—heating, ventilation, and air conditioning—is a term used to encompass your home's heating and cooling system. Most homes have an HVAC system to regulate and move heated or cooled air throughout your home. There are different types of HVAC systems, with some also controlling humidity levels as well as improving Indoor Air Quality by moving air through filters to capture allergens, bacteria, and other airborne particles.


HVAC Breakdown:
How Your System Works

HVAC systems typically include heating, venting, and air conditioning units that are combined to keep your home at a comfortable temperature all year round.



There are two common ways to heat your home with an HVAC system:

Furnace Heater

Furnaces create heat in your home by burning fuel or using electricity, depending on the system. These furnaces use forced-air systems that circulate heated air through a blower in the home's air ducts.

Heat Pump

Heat pumps keep your home warm by pumping in heat from outdoor air without burning fuel like a furnace, and don't require pilot lights or exhaust vents. In much colder climates, a heat pump may be combined with a furnace to heat homes on colder days.



Ventilation in your HVAC system includes floor, wall, and ceiling vents, ductwork, and other ventilation shafts that help to move air throughout the system and your home. Ventilation helps to normalize the temperature in your home in tandem with the heating and air conditioning portions of your HVAC system.


Air Conditioning

A common misconception about air conditioning is that it blows cool air into your home, but that's not the case. The air conditioner in your HVAC system uses refrigerant to absorb heat from your home and move it to the outdoor unit, where it's then vented into the atmosphere.

The IAQ Necessity

Indoor Air Quality is more than heating and cooling—it's about adding the components like ventilation, purification, and humidity control to create a Healthy Home environment. Now that you understand the basics of how your home's HVAC system works, how do you keep the system maintained and running efficiently? AprilAire knows just the experts who can help with that!


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