We recently moved to a home that was built in 1988, 2600 sqft. with 10' - 14' ceilings, one story in the Dallas, TX area. Our home was all electric until recently in which we ran gas into it so we plan to convert to gas heat. Our last electric bill was $900 so we need to do something soon to get that cost down. Our current insulation is a major issue as well and is probably about an R-14 worth of fiberglass insulation. We plan to bump that to an R-38 rating as soon as the new system is installed.
I have multiple bids and am trying to determine the best system to have installed. Most say we should stick w/ a single 5 ton unit vs. 2 smaller ones. Right now none seem to qualify for the federal tax credit.
Lennox XC14-060 w/ G60UV-60C-100 gas furnace (I can upgrade this to the XC-21 for a little more money if that would be wise)
Trane XL16i (4TTX6060B) w/ XV80i gas furnace (UD100R9V5K)
Amana ASX16C (ASX160601) w/ AMV8 gas furnace (AMV80905CX)
I had a Rheem bid but it doesn't really interest me. I also have an American Standard bid but it is way out of the ballpark on price.
I like the Amana warranty and it is priced in the middle of the other 2. One installer said that Amana has made some changes recently that he doesn't like and he has sold Amana for 15 years.
The price on the Trane is a little more than the Amana but only by a small margin - I would say negligible. One company said the aluminum coils is not a good design though.
The Lennox is the least expensive but again it is a 14 SEER vs. the 16 of the other two. I could bump to the XC21 Lennox for a little more and still be less than the other two which makes me nervous. I really haven't heard anything negative about Lennox.
I should mention too that we will have all new ducts installed because our old ones are dry rotted through. All installers have pitched R6 ducts vs. R8. Comments?
My problem is that everyone has their own opinion on contractors as well as manufacturers which is making it hard to select and compare.
Thoughts or comments would be greatly appreciated! Thanks!