Which of the following best describes HVAC?

Heating, Ventilation, and Air Conditioning is the correct definition of HVAC. This term encompasses the technology and systems used to regulate indoor temperatures and air quality, making environments comfortable and safe for habitation.

Heating refers to the systems that warm a building, typically involving boilers or furnaces. Ventilation involves the movement of air into and out of a space to maintain air quality by removing moisture, odors, and contaminants. Air Conditioning relates to cooling and dehumidifying the air to provide comfort in warmer climates.

Each element plays a crucial role in comprehensive climate control, ensuring spaces are not only warm in winter and cool in summer but also that the air is fresh and circulating properly throughout the indoor environment. Understanding this is fundamental for anyone working in commercial mechanical systems, as HVAC is a critical component of building design, efficiency, and occupant comfort.