The answer to 'what is HVAC system' is an HVAC (Heating, Ventilation, and Air Conditioning) system is the technology used to control the temperature, humidity, and air quality inside a building. HVAC systems are essential for maintaining a comfortable and healthy indoor environment, and they play a crucial role in both residential and commercial buildings.
HVAC systems typically consist of several components, including a furnace or boiler for heating, an air conditioner for cooling, and a ventilation system to circulate and filter the air. These components work together to regulate the temperature, humidity, and air quality within a building, ensuring that the indoor environment is comfortable and energy-efficient.