how many zones for central A/C?

Categories: A/C

We are doing gut reno so can install central A/C for four story brownstone w/garden apt. How many zones should we have? right now plan calls for 1 per floor but that seems like too many. top floor is home offices/guest bedroom, 2nd floor bedrooms, parlor main living space.
eager for any advice, as always!

By nycseattle | 03/05/2009 7:55 AM