radon retest 5
https://bravo-wiki.win/index.php/Understanding_Radon_Collinsville_Homeowners_Should_Know_About
After you've mitigated radon, it's smart to retest your home to ensure the system is working and levels have dropped below the EPA's action threshold. I waited about three months post-installation, then ran another short-term test kit to confirm the fix actually held. It gave me peace of mind knowing the air my family breathes is safe again.