An effective radon mitigation system can reduce the radon level in your home by up to 99 percent. Homeowners with radon systems have also experienced a reduction of other indoor air quality issues such as moisture and soil gas intrusion problems in their home.

While an air exchanger typically isn't installed as a radon mitigation system, a running air exchanger will reduce radon levels in the home*, because stale indoor air is replaced with fresh outdoor air.

Radon gas is a radioactive gas that you cannot see, smell, or taste. It's produced as a byproduct as certain radioactive elements decay. The most common type of radon has a half life of 3.8 days, which means half of the gas is left 3.8 days after it formed.

The cost of making repairs to reduce radon depends on how your home was built and the extent of the radon problem. A typical sub slab system may cost $800-1200 while crawl spaces or homes with multiple sections that need to be mitigated may cost $2000 or more.