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Electrical questions and answers
I'm putting a new bathroom fan in. So far I've put 3 fans in and none of them seem to pull the air from the room. I put a tissue near the fan and it doesn't grab it until it right up against the fan. The room should use a fan that recirculates the air at 150 CFM, and the room is 320 cu/ft. When I go into the attic to check it the exhaust is blowing just fine. There seems to be no damper problems. I have more air circulation than I need; what's up? There is a 1 inch gap between the door and the floor.
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Exhaust fans do not circulate the air they evacuate or exhaust it outside. To do that there must be an equal amount of fresh makeup air entering the building. Open a nearby window and see if the fan pulls more, your home may be too tight
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I don't know what you expect. You admit the fan is blowing into the attic. Pressure moves a lot more air than suction. With a 1" gap, you should have enough air flow. Close the bath door, turn on the fan and use tissue strips at the floor gap. I bet you see air flow.
PS 320 cubic feet is a small bath 5x8? That fan should be fine. |
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