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Old 07-28-2012, 05:46 PM   #16
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Quality Air Movement in Tandem Garage?


May want/need to check with your local AHJ on the added WHF in the ceiling first. An attached garage is usually required to have fire-code drywall on the ceiling (and separated from attic space/house) and weather-stripped door to living space in case of a fire there. An added hole in the ceiling would compromise that leaving a path from the garage to attic framing for flame spread. You could exhaust up-high on a back sidewall, leaving the big (car) door open somewhat when exercising. Gasket the door to the HVAC-- sides, top and bottom sweep to contain that room separately. Check locally.

Gary

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Old 08-06-2012, 10:26 AM   #17
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Quality Air Movement in Tandem Garage?


Quote:
Originally Posted by GBR in WA
May want/need to check with your local AHJ on the added WHF in the ceiling first. An attached garage is usually required to have fire-code drywall on the ceiling (and separated from attic space/house) and weather-stripped door to living space in case of a fire there. An added hole in the ceiling would compromise that leaving a path from the garage to attic framing for flame spread. You could exhaust up-high on a back sidewall, leaving the big (car) door open somewhat when exercising. Gasket the door to the HVAC-- sides, top and bottom sweep to contain that room separately. Check locally.

Gary
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Old 08-06-2012, 10:38 AM   #18
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Quality Air Movement in Tandem Garage?


I strongly remind you that if you use any kind of mechanical ventilation i.e., fan system for fresh air then, make sure you are pushing air into the space and not the reverse as any negative pressure will draw in the fumes from the gas fired hot water tank...NOT GOOD! You want to slightly pressurize the room to make sure the air flow is out, under the door of the mechanical room thereby preventing fumes from entering the garage AND making sure there is adequate combustion air for the HW tank. Anything less could cause carbon monoxide entering your workout space.

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