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Spot HRV distance from openable portion of window

rossn Member Posts: 76
I know this isn't a heating question, but am thinking folks in this forum will know the code around this.d

I am installing some Lunos e2 Spot HRVs in a residence - they alternate between pushing and pulling of air out/in the home. Do I understand correctly that these must adhere to IRC M1506.3 “Air exhaust openings shall terminate not less than…; 3 feet from operable and nonoperable openings into the building…”?

If so, and there is a ’slider’ type window, is the requirement 3’ from the openable portion of the window, or the entire window? I wasn’t clear about ‘operable and *nonoperable* openings’.

Will code allow an extension outside the home to make the 3’?


  • Zman
    Zman Member Posts: 7,569
    I think you meet the intent of the code installing it as you describe.
    The safe move would be to ask for an interpretation by the code official before installing.
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
    EBEBRATT-Ed Member Posts: 15,513
    @Zman advise is good I would guess just the part of the window that can be opened. I would think an extension would be ok but may look funny