I've been talking to various hvac contractors about completely new HVAC/duct systems for an extensively remodeled 3400 sq foot single story house in Southern CA. I've learned a lot just by reviewing the previous threads, but one of the contractors uses Tempstar exclusively and there isn't a lot of info here regarding that brand. Supposedly, they're made in the same factory as Carrier. How do their products and the company rate compared to some of the other more well known companies? I know some of their products don't have the full 10 year warranty. Are there some models that I should really stay away from? I'm planning to have at least 2 zones, using a damper system.