Post-Mitigation Radon Testing in Iowa City
EPA recommends retesting every 2 years even after mitigation. We verify your system is still pulling levels under 4.0 pCi/L.
Once a radon mitigation system is installed, the EPA recommends retesting every 2 years — and every time the home undergoes major renovation, foundation work, or HVAC changes. Fans wear out (most last 7–15 years), pipes can disconnect, and changes to the home can shift soil-gas pressures.
We test post-mitigation systems regardless of who installed them. If your levels have crept back up, we can diagnose whether it's a fan issue (cheap fix), a pipe or seal issue (medium fix), or a system-design issue that requires re-engineering.
We do a lot of these for Iowa City homeowners who bought a home with a pre-existing system and have no idea whether it actually works.