The issue of radon mitigation systems temporarily clogging due to ice forming on the vent pipe of the radon fan is very common in cold weather climates. … The only downside of a radon system drawing out moisture vapor is the potential for ice jabs in cold winter months.

Why is my radon fan not working?

Make sure the breaker that the radon fan is on did not trip. If the fan is located in the attic, it’s powered by a simple outlet. Make sure that it didn’t just accidently get unplugged. If the fan is installed outside, there is a water-tight electrical box with an on/off switch on it located next to the fan.

Should radon fan run constantly?

Your radon fan should never be turned off. It should constantly be running in your home to ensure that the system is working properly. After a radon system installation, a post-mitigation test for radon should be performed within 30 days of install.