Ask the Inspector...
Question: I have a mitigation system in my house. How do I know if it is working?
The only way to know if a mitigation system is reducing the radon level is to get your home tested again. The EPA recommends that everyone test their home every two years, especially if you have a mitigation system. If you have renovated your home or have installed a new HVAC system, then you need to test your home ASAP.
- The "U" tube (as shown below) tells you if the mitigation system fan is working, not if the radon levels are being reduced. If the "U" tube levels are even, that is a sign that the system is NOT working!
- If the power goes out, check to make sure the system's fan also turned back on. Check the fan monthly to ensure operation.
- In past years, sump pump pits were an acceptable means of mitigation system installation. However, they are no longer allowed. All mitigation systems will have their own port in the floor. If your sump pump requires service or if the sump pump/radon reduction cover is removed, call your radon service provider immediately.