IF DONE RIGHT (and usually isn't) zoning is great for comfort. Lots harder to do right with existing ducts than designing a duct system from scratch.

Mini split heat pumps are rather pricey but sure are nice. Whisper quiet and extremely efficient.

The zoning is worth it if you have a real problem with temperature stratification (and you probably do) and if it is done right.

You probably should back up and question the system you are planning on getting. I would first say that you would probably have lower utility bills by backing down the furnace efficiency and go with a heat pump (that would depend on your gas and electric rates). The install cost could be a wash.

I'd really ask what they are planning to do with the ducts for that zoning price. You see, your ducts are probably set up to flow enough for 4 tons. If you are trying to cool just the upstairs, then you are ramming 4 tons worth of air flow into about half of the ductwork.

I think your overall cost is a little high but that is region dependent.

Thanks for your reply, Baldloonie! Good to know.

David, I feel a little lost when reading your reply, but I know for sure that *you* know what you are talking about!

Okay, so I should ask what they are planning to do with the ducts. Lost me after that. Also, is the furnace too high a SEER, is that what you mean?

Would you try to negotiate the price on the zoning? What if I could get it for $2,000? What do you think my overall price should be?

Do you live in Cary, NC? Nice area. I think your cost of living is a little lower than ours, but not hugely so. I live in Virginia Beach.

Thanks so much for your feedback!

Also, when you say, "zoning is worth it if you have a real problem with temperature stratification..." How do I know there's a real problem w/stratification, or if the issue is just how old my current system is? I do have a very large master bed/bath on the 2nd floor. Then there is a smaller bath, a very small room, a tiny laundry area and another fairly large room on the 2nd floor.

Thanks!!!