I'm replacing a 30 year old furnace with a new one. My house is about 1600 SF in Bay Area. Since this house is not really energy efficient I'm planning to use a two zone (bedrooms, living area) system. One of the contractors gave me an estimate for a Carrier performance 2 speed, 2 stage 94% with two thermostats, dampers, and a control board. Another one gave me an estimate for Carrier infinity (costs about $X more) and is telling me that infinity is the only system that works well for a zoned system. Do you have any opinions about the suitablity of the two models for zoning and the value proposition?
[Edited by jrbenny on 11-04-2006 at 01:38 PM]