Heating may refer to: HVAC: Heating, ventilation and air-conditioning Heating devices, 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… (More on Heating)