It actually stands for the three different functions provided by the system. They are: Heating Ventilation Air Conditioning Sometimes, HVAC is followed by a fourth letter—an R (HVAC/R or HVAC-R).

HVAC systems should be at the top of business’ preventative maintenance lists, ensuring that air quality is comfortable and safe. Preventative maintenance is of paramount importance.

The HVAC industry is positioned for much faster than average job growth in the coming years thanks to demand for HVAC products and competitive training opportunities. But how exactly do HVAC systems ...