暖房 refers to heating systems. The opposite is 冷房 (air conditioning/cooling).
Common patterns
- 暖房をつける: to turn on the heating
- 暖房を消す: to turn off the heating
- 暖房が効く: heating works/is effective
- 暖房器具: heating equipment
Types of heating
- エアコン: air conditioner (heating/cooling)
- ストーブ: heater, stove
- こたつ: heated table
- 床暖房: floor heating
Opposite: 冷房 (cooling, air conditioning)