Trane Furnace Prices

These are two good brands. I do not think you could go wrong with either. Compare factory warranties for main units and combustion chambers may carry a longer warranty - then go to the longer of the two.

I agree with Kirk 100%. Guarantee decide!

You are comparing apples with oragne. You have given us a number Lennox furnace and Trane A / C number. What do you do? Tell yourself that you change your furnace and A / C? Tell yourself that you install a system compatible? If you want an answer regaurding equipment is better than to give us any information. The kiln # Lennox you have given us a high yield gas model of 92%. This is a good oven, but when you need repairs and parts are generally Lennox 20-30% more expensive in any other brand out there and are less available. You can get these pieces of Lennox. When you have repairs on a Trane system you can usually get these parts from a wholesaler who deals with HVAC and less costly.
Personally, I do not like Trane. I am an advanced service and I see all kinds of problems they have. Although all Trane equipment problems seems to have more than their share. Carrier, Bryant or Payne would be a better choice. Warranty options are better. Before spending a lot of money I would get a quote from a dealer Carrier. Explore all options before making a decision.

I would go with a Lennox
both are good and the ovens are quite reliable
Trane furnaces are not very friendly service and parts are expensive, the choice is yours to make viewing the form of guarantee from the contractor and the oven's self