Radon mitigation systems are not necessary in all cases. However, if your home testing results show high levels of radon, it is strongly recommended that you install a radon mitigation system. Radon is a colorless, odorless, radioactive gas that is formed as uranium breaks down in the soil. It can enter your home through cracks in the foundation, and it is estimated that 1 in 15 homes have high levels of radon. Radon exposure is a leading cause of lung cancer, so it's important to take steps to reduce your exposure if you live in a home with high levels of radon.

It depends on your home's radon levels. Your county health department can test your home for free and tell you what the levels are. If they're high, you'll need a mitigation system to bring them down to safe levels. If they're low, you probably don't need one.