Thanks for your post. I'm interested. Who is offering that on residential installs?DELInstallations said:You don't use modulating dampers, you use VAV boxes. The only variable is the equipment on the other end of the duct. How the boxes are controled is a simple item, but does require balancing and should have a somewhat smart head end to take advantage of knowing the flow and position of the VAV percentage, as well as the temperature of incoming and outgoing air.
It's how it's done in the real controls world outside of the erector sets that everyone seems to want in their houses. If you do it right, it's the cat's meow, but people get hung up on the bottom dollar sticker vs. effeciency and control.
Once you get away from the basic embedded dumb circuit boards that all HVAC guys seem to want to mount on their ductwork or AH it's a different world.
In addition to Maytag, I notice that Carrier also offers 8-zone systems on their residential infinity lineup (http://www.carrier.com/homecomfort/en/us/products/controls-and-thermostats/)