Results 1 to 7 of 7
  1. #1
    Join Date
    Apr 2005
    Posts
    2
    Our 30 yr old condominium in southern California has 14 units in 2 buildings. Heating is from a central boiler, AC is from separate AC systems in each condomimiun. Heating and AC share a common heat exchanger in each condominium. We are told by contractors that replacement parts are not available and that systems in individual condominiums will have to be replaced by reverse heat pumps for each condominium. Is it true that these are units are obsolete and cannot be restored? Are reverse heat pumps the only alternative, or are there others?

  2. #2
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,590
    Need some more info or pictures. I'm guessing a blower unit with an A/C coil plus a hot water coil from the boiler. Isn't a big deal to replace the setup. Or are they eliminating the boiler and requiring condo owners to come up with their own heat source?

  3. #3
    Join Date
    Apr 2005
    Posts
    2
    To BaldLoonie--Thanks for the prompt reply. The boiler stays because it also supplies hot water to all units. The old system uses a common coil for the AC and the hot water for heating. We are told it is no longer possible to use a common coil for both.

  4. #4
    Join Date
    Nov 2003
    Location
    South Carolina
    Posts
    1,167
    Doesnt sound right to me. If parts are no longer available for your old boiler simply have it replaced with a new boiler...seems simple enough to me.

  5. #5
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,759
    We use hydro coils for both heating and cooling in one of the larger malls we have here. They're not hard to get.

    We use Trane or York, depending on the customers needs.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  6. #6
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,590
    Still have to know more. What is cooling source? Is there a chiller? Individual outdoor units? Can you take pictures of the unit in your condo?

  7. #7
    Join Date
    Feb 2003
    Posts
    1,996
    It's unlikely you're using the same coil for heating and air conditioning. Sounds like you have a hydro-air coil in the air handler. These should be very common and easy to replace. If you have PTAC style wall units in the rooms, checkout http://www.retroaire.com

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