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  1. #1

    Carrier Performance 3 ton Ac with 3 1/2 ton coil

    I am planning to buy carrier performance series 15 seers AC, one dealer Mississauga Home Comfort is telling me to get 3 ton AC with 3 1/2 ton coil for better performance. The other dealer is saying that 3 ton AC should go with 3 ton coil and if you put 3 1/2 ton coil the carrier warrantee is void. Can anybody give me their unbiased opinion what to believe on? This unit is for a 3200 sq feet home in toronto.

  2. #2
    Join Date
    Mar 2008
    Posts
    657
    well if it is an ARI matched coil then there should be a problem with the warranty, or performance. did the contractor judtify the size differential
    "The things you own end up owning you. "

    Tyler Durden

  3. #3
    Join Date
    May 2007
    Location
    DC Metro Area (MD)
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    3,371
    As said above, being an ARI-rated match is important. It is quite common to oversize the coil to get better efficiency and performance, and a 3-ton condenser going with a 3.5-ton coil is not uncommon. Can you provide model numbers? For example, I just looked up an ARI-rated match with a 3-ton Performance 15 A/C with a 4-ton indoor N coil.

    Another issue: do you have a variable-speed furnace? If not, it's hard to get 15 SEER unless you play with the coil matchup a bit.

  4. #4
    Join Date
    Mar 2008
    Posts
    657
    good point ryan about the variable speed
    "The things you own end up owning you. "

    Tyler Durden

  5. #5
    Join Date
    Jun 2005
    Location
    SW Wisconsin
    Posts
    5,006
    In Toronto, Canada the cooling season shouldn't be very long.

    If the 3.5-ton coil is an ARI-Rated Match I would think Rheem wold honor the warranty but you better make sure of that.

    A half ton larger evap coil isn't much, I like them up-sized.
    The main thing is proper ductwork & a lot of airflow. - Darrell

  6. #6
    Join Date
    Dec 2007
    Location
    Cedar Grove, Wi-Sheboygan
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    1,582
    Sorry for jumping in on the post but I have a ? regarding seer and VS blower's. I just had a Infinity furnace with VS blower installed but I still have my older 10 seer AC and coil and since I now have a VS blower will I get a better seer rating of 10 with the new furnace even though the compressor and coil do not match the new furnace?? I just had the AC checked out and all if properly charged and all duct work is good and sealed. Again sorry for jumping in on the post

  7. #7
    thanks folks for your valuable input:
    Model number of 3 ton performance 15 seers AC is 24APA536A003
    and 3 ton coil is FV4BNF003
    and 3.5 ton coil is FV4BNF005
    Both coils are carrier.

    Only justification for 3.5 ton coil is that I won't have any issues in air flow and since it is a little undersized for the house better air flow means better efficiency.
    I have a infiniti series furnace so no issues with variable motor.
    In regards to warrantee I think i'll make a call to Carrier and see what they have to say. How do u folks check ARI?

  8. #8
    Join Date
    May 2007
    Location
    DC Metro Area (MD)
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    3,371
    Okay, this is a different scenario. Those air handlers are rated for different sizes of outdoor units. There is absolutely no problem putting one or the other with the 3-ton Performance 15. The FV4BNF005 isn't actually a 3.5-ton coil. With the *003 coil you get 12.50 EER, 15.00 SEER, and 7.80 HSPF. With the *005 coil you get 13.00 EER, 16.00 SEER, and 8.20 HSPF. The unit is also a rated match with the *002 and *006 air handlers. Get the point? The airflow can be adjusted for whatever outdoor unit the air handler is matched with. FV4B Product Data

  9. #9
    thx Ryan I'll go with 3.5 ton.

  10. #10
    Also check with carrier today and they confirm that warrantee would not be void, if I put 3.5 ton indoor unit.

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