HVAC = Heating, Ventilation and Air Conditioning.

HVAC is the technology of indoor environmental temperature and ventilation comfort and control. The primary goal of a HVAC system is to provide thermal comfort and acceptable indoor air quality. HVAC is an important part of residential structures such as family homes, apartment blocks, shopping malls, hotels, airports, medium to large industrial complexes, office buildings, medical centers and other indoor public domains.

Below are some videos for an overview on how HVAC systems work…