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zdennis 09-21-2013 10:36 PM

Basement exhaust fan with radon system in place?
I am looking to install an exhaust fan through the rim joist for ventilation in my basement. It would be next to a recently installed radon mitigation system.

I'm not sure if I should do this as I read the following at :
An exhaust fan inserted into the crawl space wall removes a small amount of air from the crawl space and it is replaced by drawing a small amount of conditioned air from the living space (through cracks and other openings in the floor above into the crawl space). If radon-resistant construction is necessary (see Specification 2.1), do not implement this option because it can interfere with the operation of the mitigation system.
Looking for any advice. Thanks

gregzoll 09-21-2013 11:04 PM

The excerpt you posted, is pretty clear. Follow what it states, if you have an existing Radon mitigation system in place.

yuri 09-22-2013 08:59 AM

Probably good advice but there are tests for radon and if the exhaust system does not interfere or increase the radon level then it may be OK. would have to do a B4 and after test.

zdennis 09-22-2013 09:23 AM

Thanks for your responses. Are there any recommended ways to ventilate a basement that have a radon system?

I'm looking to control humidity/moisture in the basement while promoting air circulation for a small year round indoor garden (chile peppers).

yuri 09-22-2013 09:32 AM

Build a small airtight room for the peppers if they are creating the humidity problem and have a 3-4" inlet and exhaust pipe and small 100 cfm bathroom fan. run it on a timer for X minutes/hr to get the job done.

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