conditioned crawl space

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bark

Member
Location
Washington
My son is building a house and he's put a conditioned crawl space under it. I think the hvac guy will install a heating vent in the crawl but he also has to have a exhaust fan to blow air outside through the rim joist. There is no return air and the supply air only supplies the crawl space (conditioned area). I don't think this is a plenum, but thought I'd throw the question out there. We are in WA state.
thanks
bark
 

Dennis Alwon

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Staff member
Location
Chapel Hill, NC
Occupation
Retired Electrical Contractor
This is done alot but it is not a plenum without a return air grill.

I have never seen a sealed crawl space that needed a fan to move the air out. If the area is sealed where is it pulling air from?
 
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