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Xringer · 12-09-11, 08:27 AM

Right now, the radon appears to be very "localized", to a single sump hole.
And, I do use a Dehumidifier down there during the summer.

Yeah, maybe I should go ahead and install a new
"FanTech 4" Radon Mitigation Fan" in some 4" duct work (PVC pipe?),
but install the fan indoors, about 4 feet above the sump.

I can always work on the other health hazards next year..

That might be a good way to go. I'll just have to install a check valve
in the 1.25" sump (water) pipe, to keep air from going backwards
and flowing out the bottom(water intake) of the sump pump..

And get a air good seal around the top of the hole.

12-09-11, 08:27 AM	#23
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	Right now, the radon appears to be very "localized", to a single sump hole. And, I do use a Dehumidifier down there during the summer. Yeah, maybe I should go ahead and install a new "FanTech 4" Radon Mitigation Fan" in some 4" duct work (PVC pipe?), but install the fan indoors, about 4 feet above the sump. I can always work on the other health hazards next year.. That might be a good way to go. I'll just have to install a check valve in the 1.25" sump (water) pipe, to keep air from going backwards and flowing out the bottom(water intake) of the sump pump.. And get a air good seal around the top of the hole. __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..