The term, "HVAC" refers to all the technology that keeps air moving between the inside and outside of your home or place of business. It keeps things comfortable regardless of how hot or cold it is outside.
Producing heat for heating an interior space.
A technique for changing/replacing the air in a space to produce high-quality indoor air.
A method by which one or more fans and suction work circulate cooled air from a central location between rooms.