my building management hired these people to fix the central a/c in my apartment. they found no coolant in the unit, filled it up, and left. it worked for about a day, then failed. they came back--again, no coolant--obviously, a leak--which, however, they refused to admit they'd missed. they refilled the coolant, said look! it's fine! and left. it failed within the same day. this happened a couple of times more. they were insulting; said it was really my fault--i'd annoyed someone in the building who was letting the coolant out as soon as they put it in. this seemed ridiculous to me. went to another company; guy came; after two minutes, he said, you have a leak. fixed it on the same visit. never hire m&l.
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