The Ducane I would rate at the bottom and the Trane usually at the top,
The York I would usually put in the middle, but they have some new
models that may equal Trane. I don't sell York and don't see much in
my area anymore.
The installation is as important as the unit, but I USUALLY find that
dealers selling cheap units do the cheapest (Sloppiest) job.
Ducane is made by a subsidiary of Lennox, but definately not as good as
Some people in this group HATE Lennox, But I LOVE it, it is my
prefferred brand, with American Standard scond. American Standard owns
Trane and is basically the sane except the cabinets are different.
Make sure your installing contractor does a load calculation and
measures airflow when done. If your ducts are in an attic, garage or
crawlspace, they should be sealed and insulated. Ducts in a basement
that is conditioned usually dont need sealed. The contractor should
check for hot and cold areas as well and do an air balance. In some
instances you may want zoning also. These services are not cheap but
mean a lot for your long term comfort , economy and reliability.
Picking the most expensive contractor does not always mean the best
job, but picking the cheapest will almost guarantee the sloppiest job.
"You don't always get what you pay for, but you don't get what you
don't pay for!"
I have an article I wrote that I can email you on installing high
efficiency. It was published in Contracting Business, April 1999. The
title is "Deliver What You Promise" I need your email address with
spaces around the @ and the dot.