A heater is an appliance whose purpose is to generate heat for a building.

Heater or Heaters may also refer to:

Science, technology and engineering Central heating, a system used to heat an entire building

Devices Aquarium heater, in fishkeeping, used to warm aquarium water Boiler or heater, used to heat water for use in a heating system Furnace or heater, used to heat buildings using a central system Radiator (heating) or heater, used to transmit heat from a boiler Space heater, that heats a single area Gas heater, that heats an area using gas Oil heater, that heats oil to heat a room

Physics Heating element, a device that converts electricity into heat Cathode heater, in vacuum tubes and gas-filled tubes Heater, a vacuum tube filament for an indirectly heated cathode in a vacuum tube

Music Heaters (band), an American rock band "The Heater", a song by The Mutton Birds "Heater" (instrumental), a song by Samim "Heaters", a song on the IllScarlett album Clearly in Another Fine Mess "Heaterz", a song by Wu-Tang Clan from Wu-Tang Forever

Other uses Heater (surname) Heater shield, a type of shield Heaters, West Virginia, an unincorporated community in the US A nickname for a fastball