Radon is a colorless, odorless gas that forms naturally as uranium breaks down in soil and rock. It seeps into homes through foundation cracks, sump pits, and crawl spaces — and it’s the leading cause of lung cancer among non-smokers in the U.S. The only way to know your home’s level is to test it.
We proudly serve Indianapolis, Carmel, Westfield, Noblesville, Greenwood, Franklin, Avon, Zionsville, Fishers, and Beech Grove — and the surrounding Central Indiana communities.
Why Radon Testing Matters in Central Indiana
Indiana is one of the higher-risk states in the country for radon, and the counties Semper Fi Inspections serves are no exception. Marion, Hamilton, Hendricks, and Johnson counties are all classified by the EPA as Zone 1 — the highest radon-potential category — where the predicted average indoor level exceeds the EPA’s 4.0 pCi/L action threshold. Statewide, roughly one in three Hoosier homes tests above that level.
Radon levels vary house to house, even on the same street, so a Zone 1 classification isn’t a guarantee your home is affected — but it is a strong reason to test rather than assume.
Our Radon Testing Process
- A calibrated continuous radon monitor is placed in the lowest livable level of the home.
- The device collects readings over a minimum 48-hour period, per EPA protocol.
- You receive a clear digital report with hour-by-hour readings and an overall average.
- Can be bundled with a buyer’s inspection or ordered as a stand-alone test.