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  1. #1
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    Apr 2017
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    moving condenser from ground to roof

    I'm new to this. Gonna give it a try. I want to move my 4 ton condenser unit from the ground to my relatively flat roof however I'm concerned about sound transference through the roof into the house. Is there some sort of mounting pads that will absorb most of the sound?

  2. #2
    Join Date
    Mar 2013
    Location
    Billington Heights, NY
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    Quote Originally Posted by JTM! View Post
    I'm new to this. Gonna give it a try. I want to move my 4 ton condenser unit from the ground to my relatively flat roof however I'm concerned about sound transference through the roof into the house. Is there some sort of mounting pads that will absorb most of the sound?
    - is it allowed by building code in your area?
    - is there a permit or variance required?
    - will the roof support it?
    - where and how will the electrical and refrigerant lines be run?
    - there are pads made but you will never silence the condenser when it sits on the roof
    Experience - knowing when to get the hell out of the way and plug your ears. "Don't be a sissy. Turn it on!"

    Poodle Head Mikey - "the world is well populated with the unknowing and the uncaring and the stupid."

    Jtrammel - "I’m going to sell hvac systems derp derp derp"
    BBeerme - "every time he opens his mouth, he reminds me of a cow without the fart bag."

  3. #3
    Join Date
    Apr 2017
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    Thread Starter
    Thank you for your quick reply! I've got a licensed A/C contractor lined up to disconnect and reconnect the unit once I've got it up on the roof. He will take care of permits, rerouting the electrical and refrigerant lines. The good news is the condenser will be less than 10' from the blower unit instead of over 35'. Yes, the roof will handle it. I realize I can't completely eliminate the sound transference but would like to decrease it as much as possible. Do I remember seeing some sort of spring type of mounting pads?

  4. #4
    Join Date
    Mar 2013
    Location
    Billington Heights, NY
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    10 feet or 100 feet. It makes no difference. If you're having some problem with it, it's likely not a refrigerant line length problem.

    like this?:

    http://www.vibrationmounts.com/hvac.htm
    Experience - knowing when to get the hell out of the way and plug your ears. "Don't be a sissy. Turn it on!"

    Poodle Head Mikey - "the world is well populated with the unknowing and the uncaring and the stupid."

    Jtrammel - "I’m going to sell hvac systems derp derp derp"
    BBeerme - "every time he opens his mouth, he reminds me of a cow without the fart bag."

  5. #5
    Join Date
    Jul 2002
    Location
    Yuma, AZ
    Posts
    2,901
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    In the desert southwest, roof mount ACs are commonplace. Set on an angle iron frame. Seldom use cheap rubber isolation pads.
    "I have never let my schooling interfere with my education."
    Mark Twain
    NEVER STOP LEARNING.

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