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radon retest after mitigation

https://alpha-wiki.win/index.php/Why_a_Continuous_Radon_Monitor_Gives_You_the_Full_Picture

After spending a lot to install a radon mitigation system, it's important to schedule a retest to confirm it's actually working. I did mine about a month later, making sure the weather and my home's heating were typical, and left the test kit on the lowest level like the instructions said. The air should have had time to fully circulate with the new fan running, so a follow-up test gives real peace of mind that the radon levels are now below the action limit, making the house safer for my famil…