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Thread: Frusrtrated With Contractors

  1. #1
    Join Date
    May 2021
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    Frusrtrated With Contractors

    I have been receiving quotes on replacing my second floor system ( still functioning) , NO ONE cares do a static test on the ductwork to ensure that the variable speed furnace or a Load calculation , I have been told that the motor will adjust for duct work deficiencies but I am aware that the high static pressure pressure will shorten the life of the motor , My second floor system is mainly builder grade flex throughout the attic, at least they used R 8 , the current system removes humidity poorly ( I am sure the ductwork is a contributory factor) , it is about 1300 sq foot served by a 2 ton condenser with 2-12inch returns with each return having a 14x20 return grill. I even had to inform one of the companies that the breaker for the replacement outdoor unit quote had a 20 amp max breaker and my current 30 amp would have to be replaced. Is this how most of the HVAC contractors operate, rip out and replace ?

  2. #2
    Join Date
    Dec 2005
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    Cleveland, OH
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    Sorry you're having trouble. Try searching for companies that offer blower door testing. Ask them on the phone if they do duct sizing or static tests before they even come out. What area are you in? There's bound to be someone here that can help you.

    As far as your breaker, you can have a 30 amp breaker on a 20 amp max unit as long as the disconnect outside has the proper 20 amp) fuses in it.
    Good? Bad? I'm the guy with the gun.

    Statements made by me are strictly my opinions and do not reflect the opinions of my employer. I am not authorized to make any official statements on behalf of my employer.
    Any technical advice offered by me is for educational purposes only, all HVAC related repairs should only be attempted by qualified personnel.

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  4. #3
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    Quote Originally Posted by HM1 View Post
    I have been receiving quotes on replacing my second floor system ( still functioning) , NO ONE cares do a static test on the ductwork to ensure that the variable speed furnace or a Load calculation , I have been told that the motor will adjust for duct work deficiencies but I am aware that the high static pressure pressure will shorten the life of the motor , My second floor system is mainly builder grade flex throughout the attic, at least they used R 8 , the current system removes humidity poorly ( I am sure the ductwork is a contributory factor) , it is about 1300 sq foot served by a 2 ton condenser with 2-12inch returns with each return having a 14x20 return grill. I even had to inform one of the companies that the breaker for the replacement outdoor unit quote had a 20 amp max breaker and my current 30 amp would have to be replaced. Is this how most of the HVAC contractors operate, rip out and replace ?
    70 - 80% of the contractors Just Don’t Care!

    Keep searching, there are some that do care!

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  6. #4
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    May 2021
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    Thread Starter
    Quote Originally Posted by dougfamous View Post
    Sorry you're having trouble. Try searching for companies that offer blower door testing. Ask them on the phone if they do duct sizing or static tests before they even come out. What area are you in? There's bound to be someone here that can help you.

    As far as your breaker, you can have a 30 amp breaker on a 20 amp max unit as long as the disconnect outside has the proper 20 amp) fuses in it.
    I am in the Upstate of SC, I have a non fused disconnect BTW

  7. #5
    Join Date
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    Quote Originally Posted by HM1 View Post
    I am in the Upstate of SC, I have a non fused disconnect BTW
    Okay, two choices:

    1) add a fused disconnect

    2) replace the breaker

    Either of these SHOULD be caught in a final inspection, so they would have to come back and fix that.
    Is there permit fees included in your bids, or are permits/inspection not a thing where you are?
    The Food Stamp Program, administered by the U.S. Department of Agriculture, is proud to be distributing the greatest amount of free meals and stamps EVER.
    Meanwhile, the National Park Service, administered by the U.S. Department of the Interior, asks us to "Please Do Not Feed the Animals". Their stated reason for this policy "... the animals become dependent on handouts and will not learn to take care of themselves."
    from an excerpt by Paul Jacob in Sun City, AZ

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