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  1. #1
    Join Date
    Mar 2014
    Posts
    183
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    External Insulation Of A Heat Pump Air Handler Unit

    Unless the cabinet is sweating (which it's not) is there any real benefit of external insulation to the cabinet of a AHU that functions in a 120 degree attic with 2 inch duct wrap?

    Thank You in advance for your response!

  2. #2
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    30,740
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    How would you define "real"?
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist
    Member, IAEI

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  3. #3
    Join Date
    Apr 2003
    Location
    St. Louis
    Posts
    1,130
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    No. All your cooling is going to be lossed in the duct not in the air handler.

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