I’m finishing up my bathroom and am ready to vent out my exhaust fan…it happens to be very close to my upstairs bathroom, which uses 4″ flexible duct to reach the side of the house. Is it ok to tap into that 4″ flexible with some sort of Y connector so that I don’t have to cut another hole in the house?
If I found a Y that had dampers preventing one fans’ air from returning through the others’ would it work, and if so, where do I find such a beast….I saw nothing at the big orange box (Home Depot).
Thanks for your help,
Steve
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Most (all?) bath fans already have dampers to prevent cold air from flowing in. I don't see why you couldn't Y them together.
It may not be the industry preferred solution but I have seen far worse installations that gave no problems after decades in service. If you are in a cold climate condensation might be a concern.
Should be ok, but make sure the 'Y' is put at the bath closest to the vent and it has a double backflow valve. I made the mistake once of using a 'Y' without the flapper valve and when someone in the downstairs bath took a long hot shower, the upstairs bath got condensation all over the place. Cute!!
And where does one find such a beast? An HVAC supply house?
thanks again for your help.
Steve
Try Grainger - they have a "Y" thaqt goes along w/ the Fantech equipment. Might work for your case.
DonThe GlassMasterworks - If it scratches, I etch it!
Go to http://www.fantech-us.com
And find a local HVAC supply that carries Fantech. They make high quality backflow dampers and any HVAC supply should have a 4" sheetmetal wye.