• Check the radon mitigation system’s manometer. This is a U-shaped tube gauge included in most mitigation systems that is usually located on the pipe inside your home, often near the basement wall. Look at the two liquid levels in the tube; one side should be noticeably higher than the other. If both sides are equal, the fan is not running, meaning the system isn’t pulling air.
• Go outside to where the radon exhaust pipe exits your home and listen for the fan. Note that you may need a ladder, since the exit point is often high up on a wall or along the roofline. You should be able to hear or feel a slight vibration from the fan. If it’s silent, the fan may have stopped working.
• Another good option is to perform a new radon test. If your radon mitigation system is working properly, radon levels should be kept below 4.0 picocuries per liter (pCi/L), and preferably below 2.0. Higher radon levels indicate that your mitigation system isn’t working properly or may have lost power entirely.
• If you suspect your radon mitigation system isn’t doing its job, inspect for any power or connection issues. Make sure that the fan’s power switch or circuit breaker hasn’t been tripped. Check the system’s piping for loose fittings, cracks, or moisture buildup, all of which can reduce suction.

Are you concerned that your radon mitigation system isn’t working properly? Contact Ground One today if you’re in need of radon mitigation system inspection or repair services in the greater Twin Cities area.