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St. Louis Radon Reviews & Project Results

135+ verified five-star Google reviews. Real radon level reductions, measured before and after. The proof behind Air Sense Environmental's reputation across the St. Louis metro.

Backed by 135+ Five-Star Reviews

Every quote and project on this page is pulled from a verified Google review. We're A-rated by the BBB, IEMA Licensed (#RNM20232346), and our owner Jake is NRPP-certified and fully insured.

Real Numbers. Real Reductions.

The EPA action threshold for radon is 4.0 pCi/L. Below you'll see homes we've taken from 12-14 pCi/L down to 0.4 pCi/L, and from 30+ pCi/L down to less than 1 pCi/L — all in single-visit installs.

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What St. Louis Homeowners Say

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Credentials & Certifications

Owner Jake is NRPP-certified and fully insured. Air Sense Environmental holds Illinois IEMA license #RNM20232346 and an A rating with the Better Business Bureau. We’re active members of HomeAdvisor, the Institute of Environmental Management and Assessment, the Southwestern Illinois Board of Realtors, and the St. Louis Association of Realtors.

Every mitigation install is backed by post-mitigation testing to verify your system is performing at spec.

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Project Results: Before & After

The EPA action threshold for radon is 4.0 pCi/L. Below are six real reductions Air Sense Environmental has delivered for St. Louis homeowners, pulled directly from verified Google reviews.

Six Real Mitigation Projects

High-Level Basement Mitigation

Before: 12–14 pCi/L
After: 0.1–0.4 pCi/L
Reduction: ~97–99%

Severe Radon Reduction

Before: 30+ pCi/L
After: Less than 1 pCi/L
Reduction: 96%+

Two-Zone Whole-Home

Before: 4 pCi/L upstairs, 10 pCi/L basement
After: Both zones below 2 pCi/L

24-Hour Turnaround

Result: Radon reduced to insignificant value within 24 hours of system commissioning

Sump-Pump-Integrated

Scope: Sump pump replacement combined with radon system tie-in. Confirmed reduction post-install.

Historic Home Preservation

Challenge: Preserve historic property aesthetics
Result: Significant radon reduction with no visual impact

Featured Project: Historic Home Radon Mitigation

Watch how Air Sense Environmental designed a custom radon mitigation system for a historic St. Louis-area home — preserving original architecture and exterior aesthetics while bringing radon levels down below the EPA action threshold. This is the kind of project we specialize in for historic, vintage, and architecturally significant properties.

As Seen On Local St. Louis News

Owner Jake Lusby has been featured on local St. Louis news channels speaking about radon awareness, mitigation best practices, and what every homeowner should know about indoor air quality. Watch the segment to hear directly from the expert St. Louis homeowners trust.

Where We Work

Map of Edwardsville, IL

Illinois

Alton, Belleville, Bethalto, Collinsville, Edwardsville, Glen Carbon, Godfrey, Granite City, Highland, Maryville, Troy, Fairview Heights, O’Fallon, Swansea, Brighton, Elsah, Jerseyville, Moro, Gillespie, and Staunton.

Air Sense Environmental services are instrumental in ensuring proper testing and effective mitigation within these communities.

Map of St. Louis, MO

Missouri

 St. Louis County and St. Charles County, Missouri, cities such as Chesterfield, Florissant, Kirkwood, Maryland Heights, St. Peters, O’Fallon, St. Charles, Wentzville and surrounding area.

Air Sense Environmental plays a vital role in ensuring these communities undergo proper testing and effective radon mitigation. 

Related from Air Sense Environmental: Radon Testing, Water Mitigation, and Crawl Space Encapsulation.