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  1. #1

    PM Contactor replacement?

    Do you believe in replacing the contactor and capacitor as part of a preventative maintenance program for 2 - 5 ton units? If so, how often? Do you have a Brand you favor? Do you like to upgrade e.g 30A to 40A?

  2. #2
    Join Date
    Mar 2011
    Location
    Galveston Texas
    Posts
    530
    only need to be changed when they are going bad. For the contactor if its showing signs of pitting or if critters have gotten into them. Or down here the coils will start to corrode. As for the capacitor I only change them if they are weak. The capacitors give a % of where they should be +or - of their rated specs. If they are in the lower end or lower I show the customer the rating and the actual and leave it up to them. But as far as changing them just cause there is being maintenance done on the system....no.

  3. #3
    Join Date
    Oct 2010
    Location
    Anderson, South Carolina, United States
    Posts
    5,659
    No, only if cap is weak or if contactor is pitted badly or chattering. I'm sure lots of guys do though

  4. #4
    Join Date
    Feb 2009
    Location
    Portland OR
    Posts
    1,845
    Do you change tires on your car every 3 years even if they have lots of tread left? I don't, I replace if they are wearing and may go bad, same with HVAC parts, as others have said there is tolerances on them that will warn of when it's time to replace
    Check out my YouTube channel - http://www.youtube.com/user/skyheating1 We have customer testimonials, product reviews and more!
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  5. #5
    Join Date
    Jul 2006
    Location
    Virginia
    Posts
    4,512
    As for contactors you can look at the points and see the condition.as for the capcitor if it is over 7-8 years old might be a good idea to replace it. We don't get into price discussions here in the open forums.
    Last edited by beenthere; 09-08-2012 at 08:37 AM. Reason: removed price discussion
    We really need change now

  6. #6
    Join Date
    Jul 2010
    Location
    nebraska
    Posts
    1,620
    No. I do not change parts that are working correctly just because they might fail at some future date. Now if it's pitted then that's another story. Capacitors have rated values,they do not need changed unless leaking or out of that value range.

  7. #7
    Join Date
    Oct 2006
    Location
    The Beach
    Posts
    641
    Only change the capacitors if the rated value is way off or changing the compressor or fan motor. Change out contactor quite often if they are burned. You can tell if it needs to be changed.
    Blue Fox

  8. #8
    Join Date
    Jul 2006
    Location
    Virginia
    Posts
    4,512
    As many capacitors as i replace every summer i dont have a problem replacing a capacitor that is over 7 or 8 years old as it seems that is about the range i find many of them to fail.and i do check the on pm,s if it is off on the rating at all or any signs of oil leakage i recommend replacement
    We really need change now

  9. #9
    Join Date
    Sep 2012
    Location
    mid georgia
    Posts
    6
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    Last edited by jpsmith1cm; 09-16-2012 at 01:41 PM. Reason: non AOP member

  10. #10
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    24,947
    coolwillis

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