We are getting a Thermopride 95% efficient gas furnace in a couple weeks from Genessee Heating. My Mom, and a friend of mine, both have a Thermopride, and I put one in my rental. They are top of the line furnaces, not real big here in the West, usually have to ask for them. Genessee, Rosso, and Glendale all have experience with Thermopride. York Furnaces(Genessee) have a modulating gas valve, that seems to be the latest desirable energy saving feature.