It refers to the many types of systems used to bring air into or out of a building to heat, cool or filter the air. Furnaces, air conditioning units, filtration systems and ductwork are all part of HVAC.
It refers to the many types of systems used to bring air into or out of a building to heat, cool or filter the air. Furnaces, air conditioning units, filtration systems and ductwork are all part of HVAC.