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  1. #1
    Join Date
    Apr 2004
    Location
    So. New England
    Posts
    11

    I have to bang on compressor to get it going

    Quick question about my ac compressor. I lower thermostat & can hear the air handler come on. Great, house should be cool soon enough. But it's not. Look out window and the compressor isn't running. I go outside and bang on it (figured it's worth a try) and it starts running.

    Now this happens if the A/C isn't used for a few days. Please help with any suggestions.

    Thank you so much, Michelle

  2. #2
    Join Date
    Aug 2003
    Location
    Fort Worth, TX
    Posts
    11,292
    Call for service. Could be any number of things inside that unit responding to your bang.
    • Electricity makes refrigeration happen.
    • Refrigeration makes the HVAC psychrometric process happen.
    • HVAC pyschrometrics is what makes indoor human comfort happen...IF the ducts AND the building envelope cooperate.


    A building is NOT beautiful unless it is also comfortable.

  3. #3
    Join Date
    Dec 2003
    Location
    Citrus County, Florida
    Posts
    1,490
    Use a rubber mallet so you don't hurt your hand. Or you could call a servcie tech. There are a multitude of items that could cause this.
    Doug

  4. #4
    Join Date
    Jul 2004
    Location
    Massachusetts
    Posts
    6,829
    Use your head, not your hand! You could have a problem that is doing cumulative damage when the unit is trying to start and doesn't. A smart person would have already called a pro for service. Are you smart?
    If YOU want change, YOU have to first change.

    If you are waiting for the 'other guy' to change first, just remember, you're the 'other guy's' other guy. To continue to expect real change when you keep acting the same way as always, is folly. Won't happen. Real change will only happen when a majority of the people change the way they vote!

  5. #5
    Join Date
    Nov 2006
    Location
    Athens, Ohio
    Posts
    1,694
    What you are hitting is not the compressor. Hitting a compressor won't help it start. Call a pro to find out what is not working and let him do what needs to be done.

  6. #6
    Join Date
    Nov 2006
    Location
    Athens, Ohio
    Posts
    1,694
    Quote Originally Posted by skippedover View Post
    A smart person would have already called a pro for service. Are you smart?
    x2

  7. #7
    Join Date
    Apr 2012
    Location
    winnipeg
    Posts
    1,330
    really.... bang it... and you want help.... not much to go with there....
    it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair

  8. #8
    Join Date
    Nov 2001
    Location
    east kansas
    Posts
    8,024
    Reminds me of my first house and furnace. The heater would not work until I banged on the little gray box. I'd have to do that several times then the furnace would work fine for the rest of the year.

    I also remember the blower motors running all the time after the furnaces would shut off. I was "taught" to smack the side of the furnace and it the blower stopped to just replace the fan switch.

    So what might be happening when you hit your unit is you are helping a switch make good contact to pass power to the rest of the parts. You will need to call for service.
    Beware of advice given by some guy on the Internet.

  9. #9
    Join Date
    Apr 2012
    Location
    winnipeg
    Posts
    1,330
    indeed
    it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair

  10. #10
    Join Date
    Jul 2006
    Location
    Virginia
    Posts
    4,614
    I would just go beat the crap out of it mabey it will keep working

  11. #11
    Join Date
    Mar 2007
    Location
    NW AR
    Posts
    2,478
    I think were supposed to help these people, not make fun of them.

    It sounds like a very simple fix but it will have to be performed by a pro. The longer you wait and/or keep beating on the unit the more likely the problem could turn into bigger money. Good luck

  12. #12
    Join Date
    Apr 2012
    Location
    winnipeg
    Posts
    1,330
    I agree
    it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair

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