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  1. #1
    Join Date
    Aug 2006
    Posts
    40
    Have 5 estimates for HP for a 2 story 1,872 square foot home with half basement located in central Indiana. 1 estimate for 3 1/2 ton, 3 for 3 ton and one for 2 1/2 ton HP.
    The 2 1/2 ton estimate was the only one that did a HVAC analysis. Results below:

    Building Loads:
    Total heating required with outside air 39,863 Btuh
    Total sensible gain: 25,375 Btuh
    Total latent gain 2,418 Btuh
    Total cooling required with outside air 27,793 Btuh
    2.316 Tons (based on sensible + latent)
    2.746 Tons (based on 77% sensible capacity)

    2.5 Ton estimate recommends 13 SEER York with 15KW variable speed electric furnace.

    Think the 2.5 ton will work best. Is the 13 SEER York Affinity a good outfit?



    [Edited by bobmac on 08-07-2006 at 04:41 PM]

  2. #2
    Join Date
    Aug 2006
    Location
    San Diego,CA
    Posts
    9
    2.5 ton for 18,000 plus sq ft house ???? should we drop a zero ??

  3. #3
    Join Date
    Mar 2006
    Location
    The South
    Posts
    2,240
    bobmac

    Do you have AC now and if so what size is it?

  4. #4
    Join Date
    Aug 2006
    Posts
    40
    No cental air.

  5. #5
    Join Date
    Apr 2006
    Posts
    12
    You might want to confirm the sq.footage. There's no way you're heating/cooling 18,000 sq ft with the size units presented. I assume it's actually 1,800? That would make much more sense.

  6. #6
    Join Date
    Aug 2006
    Posts
    40
    Delete

    [Edited by bobmac on 08-07-2006 at 04:43 PM]

  7. #7
    Join Date
    Apr 2006
    Posts
    12
    For real estate purposes, anything over 8,000sq ft is a mansion. You and your son both live in very large home? I have a friend with around a 20,000 sq ft house and it has four A/C units. 3-tons wouldn't handle his 5,000 sq ft library.

  8. #8
    Join Date
    Aug 2006
    Posts
    40
    Your right, wasn't thinking. 1,872 square ft. Sorry.

  9. #9
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,620
    Now that we've figured how big the pad is looks like a good solution to me. Properly sized, Affinity is a nice setup.

  10. #10
    Join Date
    Aug 2006
    Posts
    40
    Thanks for the input.

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