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  1. #14
    Join Date
    Jul 2004
    Location
    Southern Alabama
    Posts
    448
    If your metal box really didn't have any insulation, there should be condensation on the metal from the cold air in direct contact with the metal.

    You have to have someone do a capacity check on the system; this will tell you if you are getting the correct amount of BTU cooling at the evaporator. You might have a large latent heat load (humidity) which takes away the sensible (air temp) cooling of the unit.

    A leak in the return side would pull in hot attic air and increase the load on the a/c unit. If you can hear any whistling noises around the unit, there is a leak.

    Also, the supply register temperature should not be much higher than the air coming off the coil. I THINK 2 deg is max.(I'm sure I'll be corrected if not).

  2. #15
    Join Date
    Mar 2004
    Location
    NJ
    Posts
    1,214
    Originally posted by on call
    If your metal box really didn't have any insulation, there should be condensation on the metal from the cold air in direct contact with the metal.

    You have to have someone do a capacity check on the system; this will tell you if you are getting the correct amount of BTU cooling at the evaporator. You might have a large latent heat load (humidity) which takes away the sensible (air temp) cooling of the unit.

    A leak in the return side would pull in hot attic air and increase the load on the a/c unit. If you can hear any whistling noises around the unit, there is a leak.

    Also, the supply register temperature should not be much higher than the air coming off the coil. I THINK 2 deg is max.(I'm sure I'll be corrected if not).
    I agree with all of the above however his climate is extremely dry heat with minimal latent load which is why I suggested a swamp cooler to him as well.

  3. #16

    No expert!

    I'm no expert, but do you know if your cooling coil is clean? I just had the same problem "Everything ran, but house wasn't cooling" and it turned out to be a clogged Cooling coil from using crappy filters.

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