HVAC

HVAC stands for Heating, Ventilation, and Air Conditioning. It's a kind of system that helps to keep an area cool in the summer and warm in the winter. It works by taking hot air out of the area and bringing in cool air when it's hot, and pulling cool air out of the area and bringing in warm air when it's cold. It also helps to keep the air inside clean and free of dust and other pollutants.