noun
gas heater
A heater that uses gas as fuel, typically for indoor heating.
冬はガスヒーターをつけて部屋を暖めます。
In winter, I turn on the gas heater to warm the room.
エアコン is an electric air conditioner that can both heat and cool, whereas ガスヒーター only provides heat using gas.
Variant with interpunct; less common in everyday writing.
Loanword from English 'gas heater'.