Hello! Thanks for reading my post. My Carrier system is actually about half York.
Summer, 2008 we bought a new Carrier Performance Series Energy Star heat pump system Carrier outside condenser model 25HPA542 rated 15 SEER, and inside, a Carrier coil model CNPVP4221 rated 14 SEER plus, a 5-year labor and 10-year parts warranty.
The system performed poorly from the start, failing to cool in hot southern weather, and our 2,145 sq. ft. house grew damp with mold around every AC register/vent; we bought a dehumidifier.
Recently, the TXV broke. Our new HVAC technician told us that the TXV and inside evaporator coil was a 13-SEER York model FC42C3XN1, not the Carrier we paid for, and obviously not covered by our 10-year warranty. We were unaware of this until the recent breakdown.
The original installer admits installing York parts but insists that the TXV is under warranty, and he said the York coil replaced the smaller Carrier coil to improve performance. Our new HVAC technician disputes this. He was told by the York distributor that the TXV (and coil) are not under warranty because they were installed into an unmatched system. We got a second opinion from another HVAC company, and the results were the same. We telephoned the distributor and got mixed messages.
Both diagnostic HVAC contractors have told us that in order to warranty their own repair, we must replace the 13-SEER York coil with a Carrier evaporator coil model CNVP2417ATA to match the outside component rather than replace the TXV and keep the York coil. Does this seem reasonable to you?
(Actually, the weather is terrible, and I had to act -- the York coil is out and replaced with Carrier evaporator coil CNVP2417ATA; my slew of warranties covered nothing, yet. For the first time in 4 years it is fully cool, unexpectedly quiet, and dry no dehumidifier needed.)
Please, I need some information and ideas:
How can I confirm in writing whether a York TXV (and coil) warranty is valid or voided by installation into an unmatched Carrier system? I wrote York; they havent replied.
Is the York evaporator coil inferior/cheaper than the first Carrier evaporator coil I paid for but didnt get? Are they comparable in performance?
Do any of them match the outside 15-SEER Carrier condenser model 25HPA542?
In you experience, have you known of mismatching units affecting Carrier warranties?
In your opinion, what would be my best move from here?
Thanks so much for sharing your expertise!