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Improve airflow throughout house with closed doors

4 years ago
last modified: 4 years ago

So, i started on one project and in looking into it, it's escalating into either a larger or multiple projects.I'm replacing the bathroom vent fan for a quieter inline fan. I was considering oversizing it to help improve how it vents shower steam. But in looking into the possibility of that, it seems as though it would simply pull more air from the the hvac duct that is about 2 feet from it. I've seen mention on forms that there should be a gap at the base of the bathroom door to help with ventilation. And in looking at it, all the room doors in the house are pretty well sealed for not having weather stripping.
Would it help improve ventilation and the efficiency of my hvac system to keep all rooms warm/cool if i shave 1/4" to 1" from the bottoms of the room doors?
Single story house 2000 sqft, verified unit is properly rated for the size, and ducting is properly insulated with no leaks, there's one main air return in the house.

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