暖房が故障しています。

暖房が故障しています。

The heating doesn't work.

暖房(だんぼう)が故障(こしょう)しています。

Danbō ga koshōshiteimasu.

暖房 (だんぼう)

heating

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

故障 (こしょう)

breakdown; failure; fault; accident; out of order; damage; hurt; objection; protest

Readings: ダン、ノン、あたた.か、あたた.かい、あたた.まる、あたた.める

Meaning: warmth

Readings: ボウ、ふさ

Meanings: tassel, tuft, fringe, bunch, lock (hair), segment (orange), house, room

Readings: コ、ゆえ、ふる.い、もと

Meanings: happenstance, especially, intentionally, reason, cause, circumstances, the late, therefore, consequently

Readings: ショウ、さわ.る

Meanings: hinder, hurt, harm