The XR15 and XL15i are both single stage condensers while the XL16i is a 2-stage condenser. The XV80 is a 2-stage furnace with a VS blower.

I'll let the pros answer your other questions about the quote you received.

Excuse me, but Condenser M#GSC13060 is a 5 ton 13SEER Goodman Model #.

As I recall Trane can't get 16SEER efficiency in a 5 ton.Ask for the AHRI Cert# to validate efficiency.

Sorry....the model number I first listed is for my current equipment. The correct AC model # is 4TTR5061E1000A. I do not have the correct model # for the Heating Unit.

I really do appreciate your help.

Well, apparently Trane's 5 ton XR-15 can now qualify for the fed tax credit when matched with their variable speed furnace and ASPEN coils. Unfortunately, your coil# AH604AL appears to be ADP coils and are not listed by AHRI as being a qualified system. Again, get the AHRI cert# from the dealer and confirm certification thru http://www.ahridirectory.org

Also, since you are not getting Trane coils you may want to doble check on the Mfg"s Warranty

Is the Trane a two stage unit though?

"Is the Trane a two stage unit though?"

Your answer lies here: http://trane.com/Residential/Products/Air-Conditioners/XR15-Air-Conditioner

See my first response.

The 061 model is a 2 stage unit with an unloading scroll compressor. Low stage is around 75-80% capacity depending on matchup.

Just to clarify for anyone who reads this thread in the future:

The 4TTR5061 straight a/c model is a 2 stage unit, but the 4TWR5061 heat pump model is not a 2 stage unit.

In this poster's case, yes, the XR15 is a 2 stage unit.

I am in DFW as well and just got a quote for a Trane XR15 5 ton. I had the same question. I contacted Trane and this is what they wrote back "The 4TTR5061"E" model has a 2 step scroll compressor." When I asked for the difference between a 2 step and a 2 stage they answered, "The systems that a 2 stage have two compressors in the condenser and the 2 step has one compressor." So from my understanding from what the dealer told me and Trane told me the XR15 5 ton has one compressor with two different stages. The XLi20 has two compressors to manage to two stages. I was also told by the dealer that the 5 ton is the only XR15 model that has the two stage (all of the other XR15 models have the single stage which is what makes it so confusing when you are on the Trane web site). And our quote was similar to yours.

Thank you so much dlstar. I actually just received a response directly from Trane and they stated what you have. My system qualified for both the state and federal rebates...for a total of $1,575. So, in reality my out of pocket will be $6,793. I didn't think that was too bad. I went ahead with the system install and everything went well. My heat has only come on for a bit...otherwise nothing. Let's see how it goes when the temps hit 90+. I'm hoping the money is worth it. :)

May I suggest that when the temperatures begin to warm up, say around 80F, that you call your installers to come out and recheck the refrigerant charge in you system.

Reason is, it is a guess at best when charging an AC unit in cold weather.

k87tx, I am in North Dallas (Allen) area. Looked at the state rebates and can not find them. Can you tell me about state rebates? The companies and the amount? I am getting Xli16 or Xli20 (may be the XR15). How do you like your system so far? Have you noticed any utility bill savings?
thanks

In the middle of an XR16 and XV80 install. Hope to report favorable results. Interesting site for chat.

p.s are there no tax credits anymore from the State or Fed

The federal tax credits ended in 2010. Your state may offer a credit or rebate. Many utilities also offer rebates if you meet their ratings criteria.

I suggest you start a new thread if you have more questions.

Good luck on your installation.