During National Radon Action Month, what was one effective step you took to reduce radon levels in your home, such as installing a sub-slab depressurization radon mitigation fan? What before-and-after readings did you record, and what single tip would you share with homeowners starting testing?

In a recent ground-level retrofit, passive sealing wasn't enough. The decisive step we took was installing an active sub-slab depressurization system. We cored through the foundation and installed a continuously running suction fan to reverse the air pressure relationship, venting soil gases above the roofline before they could enter the home. The data validated the investment: our readings plummeted from a hazardous 14 pCi/L down to a safe 0.8 pCi/L within 48 hours. My single tip for testing is to avoid short-term 'snapshot' kits. Radon levels fluctuate wildly with barometric pressure and weather; use a continuous digital monitor for at least 7 days to get a weighted average that reflects the true risk.

During National Radon Action Month, the most effective step I took was starting with proper testing before selecting a solution. Initial long term readings in my home averaged 6.1 pCi/L, well above recommended levels. After installing a sub slab depressurization fan, follow up readings dropped to 1.8 within a few weeks. That data confirmed the mitigation worked. The single tip I share with homeowners is to avoid relying on one short test. Longer testing reveals patterns and prevents unnecessary or ineffective fixes. Measurement should always guide action, not assumptions.