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  1. #1
    We have a 1k square foot raised home with a 5 yr old 2.5 ton unit in the attic and a brand new 2.5 ton Goodman outside. Problem is the bathroom (no air) and the bedrooms are always hotter than the rest of the house.

    Got in the attic and everything is tightly sealed, so I'm at a loss for why the back rooms are hotter? There are a bunch of trees for to help shade the setting sun. Air flow feels great and the duct work is clean.

    Any ideas on how to get the back rooms cooler?

    Thanks+

  2. #2
    Join Date
    Sep 2004
    Posts
    265
    Your post leaves a lot of questions to be answered.
    Did the unit cool to your comfort level before?
    No air in bathroom? Is there a supply register in the room?
    What was the reason for replacing the outside unit and how long ago was it done? There is a possibility you may be low on refrigerant or there could be many other problems.
    Need more info to help you out.


  3. #3
    Join Date
    Mar 2004
    Location
    Grottoes VA
    Posts
    5,856
    1,000 sq ft and 2.5 ton? where do you live the desert?
    Karst means cave. So, I search for caves.

  4. #4
    1) During inspections etc, I didn't spend much time in the bedrooms. However the front DID cool to my comfort level.

    2) No air supply for the bathroom at all.

    3) All 3 sides of fins on the outside unit were rotted, inspector noted that some form of acid for cleaning. Might be low on freon, it was done 3 days ago, will call AC guy. No notice it temp before/after in front rooms.

    Live in New Orleans.

    Here's the set-up
    2.5 ton unit in attic/outside
    Bedrooms have (1) 10" Y split with (1) 8" to each room
    Living room (1) 10" Y split with 2 8" vents
    Kitchen (1) 10" Y split with 2 8" vents.
    Bathroom has no vent

    Return air 18x24x1 in the hallway.

    Ideally I would like to add another return or 2 and a supply to the bathroom.

    Thanks

  5. #5
    One more thing, there is a totaline P474-0100 t-stat installed. I'm starting to think it's crazy. Basically, it will slowly start counting down to the desired temp, once reached it shuts off. Once it reaches say 73 and turns off the t-stat tunrs right back to 74 and after a few mins the systems kicks back on. What could this be?


    Thanks

  6. #6
    Join Date
    Mar 2004
    Location
    Grottoes VA
    Posts
    5,856
    Originally posted by justahomeowner
    One more thing, there is a totaline P474-0100 t-stat installed. I'm starting to think it's crazy. Basically, it will slowly start counting down to the desired temp, once reached it shuts off. Once it reaches say 73 and turns off the t-stat tunrs right back to 74 and after a few mins the systems kicks back on. What could this be?


    Thanks
    One of the regs are blowing right on the t-stat. IMO
    Karst means cave. So, I search for caves.

  7. #7
    Join Date
    Nov 2000
    Location
    Eastern PA
    Posts
    68,981
    You definitely have an air flow issue somewhere. As mentioned, does conditioned air blow toward the t-stat?

    If so, close down that register so the warm rooms have time to cool off.

    Just curious; what happened to the original condenser that there is a five ton air handler in your home with a new, non-matching condenser?
    Government is a disease...
    ...masquerading as its own cure…
    Ecclesiastes 10:2 NIV


  8. #8
    Join Date
    Mar 2004
    Location
    Grottoes VA
    Posts
    5,856

    Hey Robo....

    Where did you see five ton a/h?
    Karst means cave. So, I search for caves.

  9. #9
    Join Date
    Jul 2005
    Posts
    171
    That t-stat has a 5-minute compressor protection timeout.

  10. #10
    Join Date
    Nov 2000
    Location
    Eastern PA
    Posts
    68,981

    Re: Hey Robo....

    Originally posted by karsthuntr
    Where did you see five ton a/h?
    Whoops! I meant "5 year old" not "5 ton".
    Government is a disease...
    ...masquerading as its own cure…
    Ecclesiastes 10:2 NIV


  11. #11
    Join Date
    Sep 2004
    Posts
    265
    It seems you may have a couple of problems as mentioned earlier, air flow and thermostat.
    I would first address the thermostat because if one of the registers is blowing on it the unit is short cycling not giving enough time to cool the house down.
    Where is the thermostat located? Is it in an area of the return?

  12. #12
    T-stat is in the hallway, return is right above it. There are no registers blowing on it.

    How can I post a picture of the layout?

  13. #13
    Should I get my ac guy to move the t-stat in a bedroom or livingroom?

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