Results 1 to 6 of 6
  1. #1
    Join Date
    Jun 2004
    I need to replace the condensing unit for a homeowner and I am not sure what size the old one is. Here is the problem, the units data tag is sun bleached and unreadable. The compressor also has no legible numbers. The homeowner says another A/C man told her it is a 1 1/2 ton unit.

    The old unit is for an earth contact home. It has a 5/8 suction line and 3/8 liquid line. The furnace is a 55,000 BTU input/43,000 BTU output.

    I tend to think 1 1/2 ton is correct but I just wanted some feedback.

    Any guesses?


  2. #2
    Join Date
    Dec 2004
    why guess, do a load calc

  3. #3
    Join Date
    Nov 2004
    SW FL


    Originally posted by filterchanger
    why guess,
    Perhaps, it's More FUN.
    Designer Dan
    It's Not Rocket Science, But It is SCIENCE with "Some Art". ___ ___ K EEP I T S IMPLE & S INCERE

    Define the Building Envelope and Perform a Detailed Load Calc: It's ALL About Windows and Make-up Air Requirements. Know Your Equipment Capabilities

  4. #4
    Join Date
    Jun 2003
    Madison, WI/Cape Coral, FL
    What's a earth contact home? Like a berm or earthhome? TB

  5. #5
    Join Date
    Nov 2004
    I think they just start framing on the slab foundation,no crawlspace.

  6. #6
    Join Date
    Aug 2005

    size condenser

    Another way to size condenser is look at evap. coil and determine its size, label sometimes on outside but usually on inside. Copper tubing size indicates 1-1/2 to 2 ton, if length is less that 35-40 ft. If no label on evap coil and your still not sure do a heat loadcalc.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Related Forums

Plumbing Talks | Contractor MagazineThe place where Electrical professionals meet.
Comfortech 365