The answer to 'what is HVAC system' is an HVAC (Heating, Ventilation, and Air Conditioning) system is a central system that controls the temperature, humidity, and air quality in a home or building. HVAC systems are responsible for heating, cooling, and circulating the air to maintain a comfortable indoor environment. These systems typically consist of a furnace, air conditioner, and ductwork that distributes the conditioned air throughout the building.
HVAC systems are essential for providing a comfortable and healthy living or working space, especially in extreme weather conditions. They help regulate temperature, filter out pollutants, and control humidity levels to ensure the indoor air quality is suitable for occupants. HVAC systems can be powered by various energy sources, such as electricity, natural gas, or oil, and can be designed to meet the specific needs of a particular building or home.