Sucking Sound from Radon Pipe
Active attic radon fan in place for a couple of years. Normally, can hear a little bit of air moving from gap between concrete slab & foundation wall. Steady, low volume noise. Liquid on gauge has normal differential, 1.4.
New noise coming from pipe about one foot above slab. Sounds a bit like sucking air with a straw as your drinking glass empties. Not quite the same sound, but similar. Also sounds a bit like a bee hive. Pretty loud, can hear it 20 ft away. After a bit, volume dropped some. Any thoughts? Thanks.
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Replies
Best cut the pipe and have a look.