The AHRI # for the Lennox setup would be 1247483. 12.75 EER, 17.50 SEER, 8.60 HSPF. The York setup yields better numbers, 12.75 EER, 18.00 SEER, 10.15 HSPF. Comparable setups, but of course the York has more heating stages. The Lennox ComfortSense 7000 can control humidity, but I can't make out the York thermostat part number to find more info on it. Perhaps you can clarify that with the dealer. I know York has a VisionPRO 8000 thermostat with a part number for it, but it's not the IAQ (unless they have another one for the IAQ). The York setup includes IAQ accessories. I would at least look into a pleated media filter with the Lennox setup. You may get a bigger rebate.