They have some of the best warranties..Have installed them for years, I really do like their new premium lines, HP % LP swicthes, comp blankets, Copeland Alert, coil gaurds, but as any equipment they do have a quirks. That is probably just because I am anal on some things..
I've been installing comfortmaker for a couple of years now and have been servicing them for years. I like them and feel that it one of the better values on the market. I installed a four ton dual fuel in my home and the HP run down to 15 degrees before the gas comes on!