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Sullivan, NH Radon Levels

Check local Sullivan radon levels and find certified testing and mitigation professionals to keep your home safe


Sullivan, NH Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Cheshire County, NH
Zip Code 03445

Located in Cheshire County in southwestern New Hampshire, Sullivan sits in an area where granite bedrock and glacial deposits can contribute to elevated radon levels. With limited testing data available for the 03445 area, homeowners are encouraged to conduct radon tests regardless of home age or foundation type. The region's geology and seasonal temperature variations can cause radon levels to fluctuate throughout the year.

Sullivan, NH Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Need Radon Mitigation or Testing in Sullivan?

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Radon FAQ for Sullivan, NH

What EPA Radon Zone is Sullivan in?
Sullivan and the 03445 zip code are in Cheshire County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.
How much does radon mitigation cost in Sullivan?
Radon mitigation in Sullivan typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in Sullivan?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in New Hampshire

Cities in New Hampshire with the most user-submitted radon test data, ranked by number of submissions.

CityAvg User Radon LevelSubmissions
Tamworth 12.67 pCi/L 6
Freedom 10.75 pCi/L 4