Long story short - their repairman, who didn't seem to know what he was doing, came out to service my system, replaced some parts, never put the entire system back together and recommended some expensive work to be done. Quotes were to follow. Never got a quote back. Billed me twice for the same call.
As it turns out, another company determined that the problem had nothing to do with the parts they replaced, or ANY of the work they were recommending, but a faulty sensor that probably should have been the one of first things they looked at.
They offer a 100% guarantee but just try taking them up on it. Phone calls to the customer service department and President went unreturned. Promises to have the President call me went unfulfilled.
Filed a complaint with the BBB and though some of the money I paid was refunded, over a hundred dollars that the President promised to refund as a result of the BBB complaint - never was.