Complete installation of 3 ton HVAC plus ductwork and electrical into residential home in December 2005 for $9400 plus service calls over the following years. Installation was a little pricey but the system never cooled or heated the home evenly. The estimator talked me out of a TRANE system in favor of Lennox, which he asserted was a better system for the money, although it only had a 5 year warranty on compressor and electrical compared to TRANE which had a 10 year warranty. Compressor self-destructed 9 years, 6 months from date of installation. Calls to Shumate went unanswered. Finally, over the phone, representative denied that Shumate had ever sold, installed or serviced the unit, despite much proof to the contrary. In desperation, I called ESTES Heating and Air and they are installing a new TRANE system Thursday, 2 days after they came out to evaluate the viability of the unit - it was not salvageable. Shame on SHUMATE and LENNOX for poor service, lack of responsiveness and a poor quality product that averaged over $1000 per year to own, not including electricity. SHAME!