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Thread: AC Advice

  1. #1
    Join Date
    Aug 2001
    Posts
    23
    Hello:

    I live in 1400 sq./ft ranch with a full basemnet. I have a Trane AC that is about 12-14 years old.

    The air condition seems to work fine and cools the finished part of basement out of a single duct without any problem. However, it takes a very long time to cool the main floor. Even when it does get cool, it is never as cool as the basement.

    Before I call someone in, I was wondering what could be causing the problem. When the furnace is on during the winter, we do not experience the problem.

    When we replaced the furnace a few years ago, I mentioned this to the installer. He installed this vent blocker that is in an air pipe near the furance. Moving the latch either way does not seem to do anything.

    Any suggestions? Is it a problem with the vents? Vents need to be cleaned? Any info is appreciated.

  2. #2
    Join Date
    Aug 2001
    Posts
    23
    I forgot to mention one thing on my previous message. The vent in the basement has cool air blowing very hard out of it which seems to limit the cold air to the rest of the house.

    If I could stop or limit the cool air ot of the basement vent, it may permit it to flow to the rest of the house. Can some sort of vent switch cover be installed?

  3. #3
    Join Date
    Dec 2004
    Location
    Derby City
    Posts
    3,964
    Problem: cool air drops, warm air rises.
    Cause of problem: cool air drops, warm air rises.

    solution: call a reputable contractor to discuss your options. BUT, he cannot change the physics of......cool air drops, warm air rises.

    all the best, John.
    Everyone has a purpose in life..........even if it's to be a bad example.

    Seek first to understand, before seeking to be understood.

  4. #4
    Join Date
    Mar 2006
    Location
    cincinnati, ohio
    Posts
    258
    install a damper on your basement vent and close it 2/3 of the way and see if that makes a difference also you can get one from your local hardware store

  5. #5
    Join Date
    Aug 2001
    Posts
    23
    I understand the physics of warm air rising and cool air dropping.

    However, I may not have clearly stated the issue. The unit was working fine a few years ago until the vent in the basement was moved when a new furnace was installed. The vent was moved to provide additional heat to the basement. Now most of the air is being routed out through the basement which is the first vent encountered in the duct system from AC system.

    My question is can some sort of blocker be installed ont he basement vent so that I totally open/close the basement vent and prevent the cool air from going out that vent?

    Thanks

  6. #6
    Join Date
    Sep 2001
    Location
    kalamazoo,mich
    Posts
    2,174
    Nickellhead just told you to put a damper in.
    Have you hugged the Earth today?
    Donny Baker rules

  7. #7
    Join Date
    Feb 2003
    Location
    Huntsville,AL
    Posts
    4,125
    the air flow needs are different between summer & winter. So a good system will have a manual or automatic adjustment to account for such. Automatic is best, but $$$$ = sensors at each room.
    BUT, this needs to be designed, so the blower is not harmed, and electricity is not wasted.

    so, yes partially close the supplies to the bsmt -- get someone to design the system better.
    harvest rainwater,make SHADE,R75/50/30= roof/wall/floor, use HVAC mastic,caulk all wall seams!

  8. #8
    Join Date
    Aug 2001
    Posts
    23
    Thanks for all the replies. I now have a somewhat informed idea on what to do and who to contact.

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