如果你的暖气底部温暖而顶部寒冷，这意味着里面进了气。但如果里面充满了空气，这种差异也不会出现。整个装置失去作用。无论哪种情况，你都需要把里面的空气放出来。
步骤
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1
找到暖气的钥匙。五金商店可以买。
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2
关闭加热开关。确保维修前开关关闭，不然可能会引入更多的空气。摸下整个暖气。如果任何一部分仍是热的，等待它完全冷却之后再进入到下一个步骤。
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3
打开阀门。确保暖气底部的两个阀都开着。
- 把暖气钥匙插到暖气顶部的放气螺钉上。
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4
接住滴下的液体。把抹布放在放气螺钉下方。
- 慢慢逆时针转动钥匙，大概半圈。你应该会听到嘶嘶声，这是空气被水逼出来的声音。
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- 水喷出后，把螺丝重新拧紧，确保没有泄漏。把碗放在下面，免得弄成一团糟。
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5
对所有暖气管重复以上步骤。
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6
检查下锅炉。最后如有必要，您可能需要修补一下锅炉。
小提示
你需要准备