I'm new to this site, looking for some info as I replace my 24 year old Weathertron. I contacted a Trane dealer who suggested a 2 1/2 ton 13 SEER unit with standard air handler or upgrade to a 14 SEER unit with variable speed. Another dealer priced me 2 1/2 ton Nutone 14 SEER and a 15 SEER units, both with variable speed air handlers. The 15 SEER Nutone has a two stage scroll compressor and costs about the same as the 13 SEER Trane. From what I've found, looks like the Nutone is the same as the Westinghouse units, both by Nordyne. Any comments on the Nordyne as compared to the trane? Both are reputable dealers, though the Trane dealers are larger and do a lot of commercial work. Any advice would be appreciated.