I've used them on and off for several years and I've decided enough is enough. About 3 years age I had a $13k top of the line Lennox heat pump/furnace system installed. Near the end of the install they powered up the system and it had a short sending 220 volts through the system, frying one of the circuit boards. Later I got a call from them asking for another $1000 because their electrical contractor charged more than usual to install higher guage service, even though I was initially assured the bid would be the final bill. Since then, I've had to replace more boards and even the condenser, in fairness, they do not charge me for the parts/labor, but this happens during the winter and my heat bill doubles, and its cost me days off of work!! I've heard from others that Lennox systems are notorious for this kind of thing, and I'm still wondering if the short during the install cursed the whole thing. I'm not sure if G&S is responsible for the hardware, or if my aftercharge is typical, but I'm going to try another company/brand next time.
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