Hi all. I just received an estimate that included a 13-Seer Lennox, 2-ton heat pump with a 13-Seer Lennox, 2-ton variable speed air handler (plus a 2.5 ton of each for a total 2,600 sq. ft. house in Connecticut; I already have a boiler with radiant heat). My 1st question is: doesn't the heat pump need to be variable speed too (and not just the air handler)?
My next questions regard where the estimate includes "two new 2 stage heat/1 stage cool thermostats (non-programmable)". Why is cooling only 1-stage? I like what I've heard about the variable cooling for comfort and dehumidication (more importantly) purposes and will a 1 stage cooling thermostat do this?
Finally, to pull off the duel fuel in an automated fashion, over the phone the contractor had said it would be easy to have 1 thermostat (or in this case 2 with the two zones) manage both the heat pumps(s) and the boiler for heating purposes, but this brief written description of the thermotsat seems suspect to me....any advice on this one so I don;t have to constantly watch when the 2 systems are turning on and when based on one being set 3 degrees or so higher than the other?