radon system repair 4

https://writehollow.com/s/bZfVYZW4llCPsg3llWcmd

We just fixed our radon mitigation system after the alarm started beeping nonstop. The fan had seized up from years of dust, so we replaced the motor and sealed a few cracks in the subfloor with urethane caulk. Now the pressure gauge reads negative again, pulling gas from the crawl space safely outside.