Gaithersburg AC & Heating did a great job moving our central AC unit about 15-20 feet and running the lines to the new spot. They even put it on this big plastic square, which it looks like they leveled. It was on blocks before! But I asked their office about an energy audit, and they said they could do it, then when I called back, they said they don't do that, and that no one at their office would have told me that they do that! Annoying, but they did a great job.
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