Moved into new (to us, built in 1980) house 2 years ago. Installed an Airthings radon meter a year ago. Levels get up to 400 Bq/m3 when all the windows are closed. Finally had a radon mitigation system installed. Will hopefully get to much safer level below 100 Bq/m3.
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I grew up in New England, Radon is the one thing that was insanely terrifying when they started realizing how bad it is for you.
I have no doubt I smoked (via radon) 5k packs of cigarettes before I turn 12 as we all played in the stacked pink granite stone basements as kids. Zero ventilation.
Curious what folks’ thoughts on fan placement are. U.S. code doesn’t allow them to be installed in a basement—they must be outside or in and attic so the the positive pressure side is outside of living spaces.
Fans must be placed outside because a leak after the fan can be bad. Now in all honesty, that only holds true if you have bends and twists and turns. I personally think you can place it in a basement or attic as long as you have a straight continuous pipe going up.
As bonus you get passive suction when the pipe is warm.
Came here to say this. If there is a leak after the fan, radon will be pumped into the dwelling. Fan should be outside or in vented attic. Exhaust vent must be away windows or vent-intakes and above roofline. Minimum clearances vary with jurisdiction. But it’s generally a bad idea to put the fan in-doors.
