Radon Retest Verification Echo

The Hidden Danger That Lingers When I first started working in radon mitigation over a decade ago, I noticed a pattern. Homeowners would install a system, get a passing test result, and assume the problem was solved forever. They would close the file and move on. But radon gas is not a one-and-done issue. It shifts with the seasons, with changes in soil moisture, and even with how you use your home's ventilation. That is why radon retest verification is not just a technica