One of our regular readers, Q-Diddy, is looking for some advice on getting a new heating and air system. Sounds like he’s looking for 2 furnaces and 2 air units for 2-zone heating and air conditioning of a large space.

My questions to him are what is the total square footage to need two full systems, and what kind of system is in there now?

If anyone has had a new heater or air conditioner installed recently, we’d appreciate your input.