Hello. This is my first post here but I've searched these forums extensively before making my purchasing decisions on my new AC/Furnace units. I found the responses very helpful and intelligently written so I'm hoping someone can help me with the one thing I really didn't research beforehand - the coil unit. I'm concerned the contractor did not install the right coil since there is not a system (ac & furnace) match in the AHRI database for this equipment I bought. And I think this coil disqualifies me from the tax credits ($300) I was expecting on the AC unit.
These are the items I just had installed :
Furnace : SL280UH090V36B
AC : XC17-036-230
The AHRI ref number is 3895347. When I look this up, it lists the Lennox AC unit but not the furnace - and says this coil doesn't qualify my system for the tax credits.
When I look up AHRI ref number 3952589 it is the right match for my system and looks to be almost the same coil without the +TD on it. However the efficiency is higher and thus qualifies for the tax credits. I'm guessing this takes the furnace blower into account?
So I contacted the installation manager of the installation company. This was his response :
The coils that we used is an adp brand which is a make of lennox products. Their ahri ratings are not really true numbers and actually all their coils no matter what model have the exact same performance ratings.
The only difference between the 2 coils is the TD at the end and all that is, is a time delay which helps in achieving the efficiencies that the cols are rated at.
In short you meet all the requirements for efficiency.
Yet clearly I see two different AHRI numbers for Capacity/EER/SEER numbers when I compare them. Should I be concerned? Is this considered an undersized coil and I am not getting the best performance from my AC unit?
Thank you for any help!