may refer to:
- HVAC : Heating, ventilation and air-conditioning
, or systems:
- Block Heater , or headbolt heater, an electric heater that heats the engine of a car to ease starting in cold weather
- Boiler
- Cathode Heater , a coil or filament used to heat the cathode in a vacuum tube or cathode ray tube
- Central Heating , method of providing warmth from one point to multiple rooms or apartments of a building
- Convector Heater , a heater which operates by air convection currents circulating through the body of the appliance
- Dielectric Heating , the phenomenon in which radiowave or microwave electromagnetic radiation heats a dielectric material
- District Heating , a system for distributing heat generated in a centralized location for residential and commercial heating requirements
- Fan Heater , a heater that works by using a fan to pass air over a heating element
- Feedwater Heater , a power plant component used to pre-heat water delivered to the boiler
- Fireplace , an architectural element consisting of a space designed to contain a fire for heating or cooking
- Gas Heater , a heater that burns natural gas or liquefied petroleum gas
- Geothermal Heat Pump , a heat pump that uses the thermal mass of the Earth to regulate indoor temperatures
- Geothermal Heating a method of heating using geothermal heat
- Heating Pad , a pad used for warming of parts of the body
- Hydronics , the use of water as the heat-transfer medium in heating and cooling systems
- Induction Heating , the process of heating a metal object by electromagnetic induction
- Radiant Heating , a heating system which heats a building through radiant heat rather than convection or forced-air heating
- Radiator , a heat exchanger designed to transfer thermal energy from one medium to another for the purpose of cooling and heating
- Radioisotope Heater Unit , small heaters that provide heat through radioactive decay
- Salamander Heater , a portable forced-air or convection heater, often kerosene-fueled, used in ventilated areas for worksite comfort
- Solar Furnace a structure used to harness the sun's rays to produce very high temperatures
- Solar Heating , the usage of solar energy to provide process, space or water heating
- Storage Heater , an electrical appliance which stores heat at a time when base load electricity is available at a low price
- Water Heating , the heating of water for residential, commercial or industrial use
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