radon retest after mitigation 3

https://radonsysteminstallationnotes.solsticebrief.com/posts/your-home-s-radon-system-installation-what-you-need-to-know-before-work-begins

After you've installed a radon mitigation system, you can't just assume the problem is solved; you need to retest. This follow-up measurement, typically done a few months later, confirms that your system is actually lowering radon levels to a safe range. It's a crucial step to ensure your family's long-term health and avoid unnecessary exposure, giving you real peace of mind.