Our air conditioning system, a 2 stage unit made by Lennox, is what we inherited when we bought our home 4 years ago. In each summer we've had trouble with it, having compressors replaced (that wasn't the problem) and the same for many other parts.
In short the unit has never worked correctly and this summer is no exception. The interesting part of this is that every time a service person replaces a part, the unit works WORSE than before. That has now happened so often that the unit has collapsed. It has such a bad reputation in the industry that many service people you ask about it say, "don't want to touch that one".
Clearly Lennox made these terrible machines and now refuse to stand behind them when you call. In the last 3 weeks we've had no less than 10 service calls which have resulted in yet another half dozen parts being replaced to no avail.
I appreciate that this unit is not new but Lennox refuses to help in any way and if we dump it and go buy one from another company, their comment is "we don't care".
How is it that a major US company is allowed to screw over the public when one of their "designs" goes bad. Replacing our entire system is an appalling solution. The unit is a lemon. Do not buy one and above all else do not buy a house that contains one.