how many units do I need?
I am getting HVAC bids right now. I have a new construction 2 story with basement. We are in the SF Bay Area. We want to have A/C for the first and second floors, but don't think we need it for the basement, but we need heat for all 3 floors. Should I get 5 units -- 3 furnaces, and 2 A/C? Its seems like a lot of units. Or should I get 2 heat pumps combo units for first and second floors, then a separate furnace for the basement? One HVAC contractor told me that If I do the heat pumps, then I can only do electric heat for the basement. Is this true?
Thanks for any advice!!