navy dave a very nice system. you are replacing a 2 1/2 ton system? I always prefer that a new and correctly sized refrigerant lineset be installed unless there is a building obstacle/obstruction. here are the performance/eff numbers and this system does qualify for tax credit. 1382160 Active Systems XL15I WEATHERTRON TRANE 4TWX5030A1 4TEE3F39A1 30000 13.00 15.75 30000 9.00 18000 the major differences of the XL15i vs the XR15 are the following. 1.Trane's Proprietary condenser top 2.XL15i is a little quieter 3.I would expect the XL15i to be more expensive. 4.12 yr warranty on XL15i compressor vs 10 yr warranty I would want Trane's 803 stat or better yet HW VP IAQ that has "DOD" feature. Trane has a 7/12KW staged heat strip that I would recommend. nothing special about your pricing. see below quote on a three ton XL15i also in Virginny. Posted by markva (My Page) on Mon, Apr 12, 10 at 14:24 Wanted to get your opinions on the following matched Trane matched heat pump system: HP: XL15i (4TWX5036A1) A/H: VS (4TEE39A1) ARI numbers provided to me are: 36,000 BTU cooling 13.0 EER 15.0 SEER 9.0 HSPF 34,000 BTU @ 47 23,600 BTU @ 17 Included in package are: Trane 803 stat, new disconnect box, new refrigerant line, and replacing 4 supply lines in attic. Total Price: $6,000 (check/cash) or $6,796 if financed (3.9%) IMO

Both air handlers are AHRI HP Directory matches. However, the 42 would have been my choice due to the better performance/efficiency numbers. See below. 7117353 Active Systems TRANE XL18I TRANE 4TWX8036C1 *AM7A0C36H31 1170 935 36600 12.50 17.00 32400 9.00 20800 1 HRCU-A-CB Yes 261 646 Yes 7117217 Active Systems TRANE XL18I TRANE 4TWX8036C1 *AM7A0C42H31 1185 945 37000 13.00 18.00 31400 9.50 20200 1 HRCU-A-CB 255 627 Yes Operating costs would be marginally improved. I would not fret. What thermostat was installed? IMO

What concerns me is them quoting very large backup heat furnaces. I'd be surprised if you needed over 100k backup heat. Was a load calc performed? Lennox or Trane either way you would get a good system if installed properly and sized properly. I sure hope Trane would make some changes. 2-stage would be beneficial for humidity control, but not necessary by any means. What coil was quoted for the Lennox setup? If using a Lennox CX34-49C coil, the G60UHV-60C-110 furnace would make the system qualify. If they use an Aspen coil they don't have to oversize the furnace.

SCHMIDT 1.From the info you provided, this appears to be a reasonable price 2.This is a 3.5 ton XR13 heat pump,R-22 refrigerant. Trane sometimes make changes/updates within a model and designate this change with a letter suffix. Not a concern. 3.I suggest a load calculation to verify size required. This is the professional method to size new HVAC equipment. If you do go up in size, you should verfify with dealer that ductwork system can handle extra CFMs, Plus you need to verify size of your furnace blower. You can not have a 3.5 ton HP or AC condenser with a 3 ton rated blower. Won't work. Now is a good time to address any airflow issues in your home that might contribute to hot/cold spots. 4.You want a Trane coil that is properly matched to your condenser. I would not accept a 3rd party evap coil. Ask for the model number. 5.I would ask for a new refrigerant lineset. Inexpensive and cheap insurance. Has to be sized to new condenser according to Trane specifications. I would ask quoting dealer to verify that new stat has dual fuel capability. Honeywell makes dozens of different models. Post back with name plt data on your furnace. IMO