device any clever maneuver; "he would stoop to any device to win a point"; "it was a great sales gimmick"; "a cheap promotions gimmick for greedy businessmen"
brasier,
brazier large metal container in which coal or charcoal is burned; warms people who must stay outside for long times
convector a space heater that transfers heat to the surrounding air by convection
defroster,
deicer heater that removes ice or frost (as from a windshield or a refrigerator or the wings of an airplane)
demister heater that removes mist from the windshield of a car
radiator a mechanism consisting of a metal honeycomb through which hot fluids circulate; heat is transferred from the fluid through the honeycomb to the airstream that is created either by the motion of the vehicle or by a fan
solar heater a heater that makes direct use of solar energy
space heater heater consisting of a self-contained (usually portable) unit to warm a room
