radon retest verification 4

https://myradonmitigationweststpoint.sagecurrent.com/posts/radon-mitigation-west-st.-louis-county-a-local-guide-for-homeowners

When you get a call about radon retest verification, it usually means the initial test showed high levels, and now you need to confirm whether mitigation efforts actually worked. This second test should be done under the same conditions as the first, usually in the lowest lived-in level of your home, with windows and doors kept closed for at least 12 hours beforehand. It's not complicated, but it's crucial for peace of mind and safety.