Passive air inlet for dryer makeup air?
I’d like to solve a problem I have with makeup air for my clothes dryer.
The dryer is located in an unconditioned (but nicely finished) utility room/pantry/storage room that needs to be kept clean. The door to this room is well-sealed as an exterior door. In order to provide makeup air when the dryer is on, I have been opening the only window in the room. This draws dust, pollen, and small bugs through the window screen and onto the folding table and into the air filter of my heat pump water heater.
I recently discovered the Panasonic FV-GKF32S1 passive inlet vent which seems like it would solve my problem. It states that it is rated up to 18 cfm – which is not enough for a dryer (probably about 100 – 150 cfm?) – but I believe this 18cfm rating is “passive”, meaning the amount of air exchange that occurs due to the stack effect.
Is the ~3″ duct in the Panasonic unit large enough to provide approximately 100cfm of makeup air for a dryer? In my case, the duct would be run directly the an exterior wall, so only about 4″ straight-through.
Assuming that the 3″ duct would provide sufficient makeup air, can anyone think of a problem with this setup?
Thanks for reading 🙂
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