correction, he is check leak first before install new R22 unit,

来源: 于 2013-06-25 13:22:16 [旧帖] [给我悄悄话] 本文已被阅读：次

He is going to check leak first before install the R22 unit.  It is possible that leak is very hard
to find? Can that be found?. They say it is hard to find the leak.