House ventilation and makeup air
We are building a new house in northern NJ, and after reading the great information here about ventilation, I am trying to get ours right.
Our house is a two-story colonial with mostly new construction. I do not think it will be especially tight. We will have 3 bedrooms, two baths on the second floor. The first floor has a 400 cfm range hood, a powder room, and a traditional fireplace. The basement has a conventional clothes dryer and a hobby area with 150 cfm exhaust.
Heat will come from a hydronic system, AC from minisplits, so we have no ducts or central air handler.
I think we might get 3 pairs of Lunos ductless ventilators, putting one unit in each bedroom, and the remaining three spread throughout the living areas.
For the first floor and basement, I am thinking of installing a Fantech Makeup Air System that will provide balanced makeup air for the range hood, powder room, dryer, and hobby exhaust.
I’m having a hard time figuring out what to do with the two upstairs bathrooms, where I would like to install a 150 cfm Panasonic exhaust in each.
I have read here and elsewhere that such fans probably don’t “need” makeup air. I have also read that people seem generally not satisfied with passive air inlets.
Some kind of makeup air seems like a good idea to me, especially because the cost of adding it now is relatively modest, whereas a retrofit might be tough.
I am thinking of installing a motorized supply air damper, such as those made by Broan, near each bathroom.
I could also use my makeup air system but they are pretty far apart in the house.
What do you think? Any ideas? What would be the absolute best solution?
Thank you all in advance.
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