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老空调铜管道保温外管保护套老化更换作业（制冷效果差问题排查）
老房子的老空调，制冷效果打折扣，最热的时候制冷总感觉差那么一点，内外机都清洗过了，发现这台空调的外管铜管保护套老化的厉害，很多铜管都裸露了，重新包管试试
陈老师的日常vlog20/158
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