Trane XL15i worth $500 more than Lennox XC13 in terms of quality?
I know it's not totally apples to apples, the Trane being a 15 seer and the Lennox a 13 seer. I can get a XL15i for $5K after rebate or the XC13 for $4,500. I figure the payback on the extra $500 would be ~8 years. But I'm wondering about the quality difference too? Is the XL15i a superior unit and worth the additional price just in quality?