HVAC Feedback appreciated -

Ok Fellas, Last winter, I discovered that the heat exchange in my Lenox furnace is cracked.....

So my wife's close friend's husband is supposed to give us a deal. He's a good dude, I've hung out with him a few times.
The guy does HVAC for a living and said he'll give me a good price on a furnace and AC. Here's one option:

Trane
95% Efficient Furnace
13 Seer
R-410A Refrigerant
2.5 Ton Condensing unit (A/C)

Installation includes wiring, ductwork, misc. parts.
Warranty
Lifetime heat exchanger
5 year parts
1 year labor

$4,650 Total. What do you guys think?

I would call a couple more companies and get bids from them.


Just For Your Comparison.

http://www.ebay.com/itm/2-5-Ton-Tra...t=LH_DefaultDomain_0&var=&hash=item53ecb25235


10 Year Warranty on Parts
10 Year Warranty on Compressor

eBay. Don't forget all the seller fees, shipping fees and PayPal fees on the auction that is added to the selling price.