We are putting an addition on and are soliciting proposals to install a Bryant 4 ton evolution, with damper and zone control and smart sensors and the necessary duct work. The dealer we have always used quoted 18, 500. Seems exorbitant. Any thoughts?

Gas heat or heatpump? All new ductwork? What is the eff rating for the units? And how many zone damper a you talking about?

Gas heat. 4 zones

Depending on the seer rating of your ac unit, and if you furnace is varable speed or not. With 4 zones, and all new ductwork. Anything less the 20k sounds like a not to bad deal. But again depends on efficancy and seer rating