Why not radon fan in crawlspace?


Old 12-25-06, 02:48 PM
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Why not radon fan in crawlspace?

Merry Christmas everyone!

My radon test comes out to be 8.5 cpi and I want to do something about it. Sealing the sump pit cover is the first thing to go. If it does not help, I'll install a radon migration fan. The radon pipe is pre-installed by the builder, running from the sub-slab to the ceiling, so I only need buy a fan and put it on.

After reading all the online informations, I noticed that for all the cases, the fan is either installed outside the building, or in the attic. My question is why not put the fan in the crawl space? I hate to go to the attic to mess with the blown cellulose. Thanks.
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Old 12-26-06, 04:56 AM
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I can't see why there would be a problem with mounting the fan in the crawlspace. I think the manufacturer was thinking "everyone" has an attic, but some houses are built on a slab. As long as you can get to it for maintenance, and you have adequate wiring for the fan, it should be fine. The main objective is to move the air. I am assuming it is a low cfm fan, which will evacuate just the air you need rather than exchanging the air every minute or so.
And thank you for not being politically correct.
Merry Christmas to you and your family, too!!
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