I'm live in central PA and am in desparate need of a new heat pump system to replace a 3 ton 25 year old GE system. I've received proposals from a number of local HVAC vendors and have narrowed my choices to a TRANE XL14i and a Carrier Infinity 17. One vendor deals in both TRANE and Carrier and the other vendor deals in Carrier and Luxaire. The vendor who sells both Carrier and TRANE is highly recommending the TRANE unit and says that it's the highest quality system available and it will long outlast the Carrier Infinity. He also maintains that the Carrier model, even though rated at 17 SEER will not be as efficient/economical as the TRANE XL14i (which has a lower SEER rating)???. He also maintains that the Carrier unit has design flaws that will allow the outside unit to rust out within 8 to 10 years and that they are much more prone to leak refrigerant because of the joints in the refrigerant lines. The Carrier and Luxaire vendor says that the TRANE is a good unit, but that the Carrier Infinity 17 will provide a higher SEER and HSPF value.
Installed, the TRANE unit will be $600 more than the Carrier. I'm very interested in the Carrier because of the two stage compressor and variable speed and the Infinity control's ability to report on maintenance items and control the humidity level.
According to each vendor, both the TRANE and Carrier carry 10 years parts and labor warranty on the compressor, fan coil.
Please help me make a decision! I'm really torn and don't know what to do. Both vendors have been in business for a long time and have a very good reputation in the area. I've also talked to references for both and all were very satisfied with both vendors.
Thank you for your assistance.