Radon mitigation systems must follow a few basic requirements to fulfill the EPA’s guidelines. To begin with, the air from the radon mitigation system must be discharged at least 10 feet above ground so that it can dissipate into the surrounding air. In addition, this discharge point must be above the eave of the roof and at least 10 feet away from, or two feet above, any window or opening in the house. This is to prevent the radon from reentering the house at extremely high concentrations.
The radon fans themselves cannot be located within (or below) any livable space of the home. Normally, radon fans are located outside the home, in the attic, or in the garage as long as there isn’t any livable space above the radon reduction fan.
All radon reduction systems must be equipped with a device that alerts the homeowner if the system stops working. This can be a water gauge (manometer), an audible warning, flashing lights, or some other warning device. The homeowners should examine the system often as part of their regular maintenance routine.
The radon reduction system also has labeling requirements. This is to prevent accidental modifications to the system that could exacerbate the problem.
Once the radon reduction system has been installed, you should wait at least 1 day, but no longer than 30 days, to test again to make sure that the problem has been solved. Homeowners should test their homes every 2 years or less to make sure that the system is continuing to operate as expected.