What is the primary function of a furnace in an HVAC system?

The primary function of a furnace in an HVAC system is to heat air that is distributed through ductwork. Furnaces operate by burning fuel (like natural gas, propane, or oil) or using electricity to generate heat. This heated air is then circulated throughout the building via ducts, ensuring a comfortable indoor environment during colder months.

Furnaces are essential components of heating systems and work in conjunction with other HVAC equipment to maintain a consistent and effective temperature. Their design and operational mechanisms allow them to efficiently deliver warmth, highlighting their critical role in climate control within residential and commercial spaces.

While some aspects of HVAC systems involve cooling, air filtering, or humidity control, the specific duty of the furnace is solely focused on generating and distributing heat, making it central to the heating function in an HVAC setup.