An HVAC system is a mechanical device that provides thermal comfort, reduces air contaminants and humidity, maintains pressure relationships between spaces and produces acceptable indoor air quality in buildings.
An HVAC system is designed to provide thermal comfort and acceptable indoor air quality in buildings. It does this by providing thermal energy (heat) or removing thermal energy (cooling), controlling the circulation of air and contaminants at the source, and removing unwanted moisture from the indoor environment.
Energy Efficiency: Energy efficient HVAC systems use less energy for the same performance as conventional systems. This can be accomplished by designing more efficient systems, using more energy-efficient equipment or both.
Efficient heating and cooling equipment: Efficient heating and cooling equipment uses less energy to provide the same level of comfort as conventional equipment. Some examples include heat pumps, heat recovery ventilators (HRVs), gas refrigerant compressors, power-assisted air handlers and variable speed drives on motors used in fans and blowers.
How Does an HVAC System Work?
An HVAC system has three main components: a furnace, an air conditioner or heat pump, and ductwork. The furnace is the part that heats up your house using natural gas or electricity (if you have an electric heat pump). The air conditioner cools you down by removing excess heat from inside the house and transferring it outside through the ductwork. This process uses refrigerants such as freon to cool down the air before it's blown into your home through registers located near your floorboards. The ducts are connected to blowers that push air out into each room of your home.