What does HVAC stand for?

HVAC stands for Heating, Ventilation, and Air Conditioning, which encompasses three critical functions needed for maintaining indoor air quality and thermal comfort in residential and commercial buildings.

Heating refers to the system's capability to warm indoor spaces during colder conditions, ensuring comfort for occupants. Ventilation is the process of exchanging or replacing air in a space to control humidity and improve indoor air quality by removing contaminants. Air Conditioning involves cooling and dehumidifying the air, providing comfort during hot weather. Together, these components create an integrated system essential for a comfortable and healthy indoor environment.

The other choices do not accurately define the HVAC acronym. While they contain similar terms, they don’t encompass the standard terminology used in the industry, making the correct answer pivotal for understanding HVAC systems properly.