暖气

Traditional form:

暖氣

Pinyin (reading):

nuǎnqì

Definitions:

• central heating
• heater
• warm air

Characters:

• 暖 - warm, genial
• 气 - air, gas; steam, vapor; anger

Traditional characters:

• 暖 - warm, genial
• 氣 - air, gas; steam, vapor; anger