NRPP-Certified · IEMA #RNM20232346 · Serving Both Sides of the River
Radon Mitigation St. Louis
Air Sense Environmental is a St. Louis, Missouri-based radon testing and mitigation company dedicated to protecting homes and businesses from the dangers of radon gas. As an IEMA-certified radon professional, we meet the rigorous standards required by the Illinois Emergency Management Agency, bringing verified expertise to every inspection and mitigation project across the St. Louis region.
- Radon mitigation safely removes cancer-causing gas from beneath your home using a proven sub-slab depressurization system.
- Built for homeowners, buyers flagged at inspection, and property managers who need fast, reliable results.
- Proudly serving the greater St. Louis metro including St. Louis City & County, St. Charles, Jefferson, Franklin, Madison, and St. Clair counties.
- Owner Jake is NRPP-certified, fully insured, and backed by 132+ five-star reviews, so you’re in expert hands from the first call.
BBB Rating: AAs of 7/20/2026 · Click for Profile
The Radon Picture
EPA action level: 4.0 pCi/L. Our systems are engineered to bring homes well below it.
Built to performWhy Us
Why Air Sense Environmental
At Air Sense Environmental we understand the importance of providing a clean air atmosphere in your home. Our trained and IEMA licensed professionals (#RNM20232346) are here to help, and we are a BBB Accredited Business with an A rating. From our free in-home estimate to your finished system, the air in your home is our top priority. Sit back and watch the video below to see how the team at Air Sense Environmental handles radon mitigation and radon testing. Thanks for visiting, and we look forward to working with you on your next radon mitigation project.
Get Started
Get In Touch With Us!
Tell us about your home and we’ll get you scheduled, or call 314-664-9807 anytime, 24 hours a day.
Reviews
What Our St. Louis Customers Say
Watch
Watch: How We Protect St. Louis Homes from Radon.
Key Points From This Video
- Radon mitigation systems use sub-slab depressurization to draw radon from beneath the foundation.
- A PVC pipe runs from the slab through the home to an exterior exhaust point.
- A fan unit maintains continuous negative pressure below the slab.
- Installation typically takes 2 to 4 hours for a standard single-family home.
- Air Sense Environmental serves the greater St. Louis metro area.
Related from Air Sense Environmental: Radon Testing, Crawl Space Encapsulation, and Indoor Air Quality Testing.
The Problem
What Is Radon?
Radon is a naturally occurring radioactive gas that comes from the breakdown of uranium in soil, rock, and water. It seeps into homes through foundation cracks, sump pits, crawl spaces, and utility penetrations, and you cannot see, smell, or taste it.
The EPA sets the action level at 4.0 pCi/L: at or above that reading, mitigation is recommended. Much of the St. Louis region sits in the EPA’s two highest radon-potential zones, which is why testing is the essential first step. Radon is the second leading cause of lung cancer in the United States, responsible for an estimated 21,000 deaths annually according to the EPA. Watch the video above to see how we test and mitigate radon in St. Louis-area homes, then call us with whatever questions the video doesn’t answer.
What We Do
Our Radon Services in St. Louis
Licensed Radon Testing
Discover and eliminate the hidden threat of radon gas to secure your family’s well-being. At Air Sense Environmental, we conduct radon testing services. Our precise examinations unveil potential risks, empowering you with vital insights to fortify your home against this unseen menace.
Licensed Radon Mitigation
Experience peace of mind with our licensed radon mitigation services. Our expert team specializes in tailored radon mitigation strategies, utilizing cutting-edge methods and technology. From radon testing to expert installation of radon mitigation systems, trust Air Sense Environmental, your local radon mitigation contractor, to reduce radon gas levels to the minimum, ensuring a healthier home.
Radon Mitigation
A custom-designed system that pulls radon from beneath your foundation and vents it safely above the roofline.
Explore the service →Radon Testing
Professional measurement with calibrated equipment, the honest starting point for every decision.
Explore the service →Commercial Radon Mitigation
Schools, daycares, multifamily and commercial buildings, engineered systems and documented compliance.
Explore the service →Indoor Air Quality Testing
Beyond radon: identify the airborne contaminants affecting comfort and health inside your home.
Explore the service →Crawl Space Encapsulation
Seal the dirt, control the moisture, and cut the pathway radon and humidity use to get upstairs.
Explore the service →
Questions
Radon Questions, Answered
How much does radon mitigation cost in St. Louis?
Radon mitigation system installation in St. Louis typically ranges from $650 to $1,200, depending on your home’s foundation type, size, and measured radon levels. Air Sense Environmental provides free estimates. Please contact us to schedule an assessment. For a full 2026 pricing breakdown, see our St. Louis radon mitigation cost guide.
Is Air Sense Environmental certified for radon mitigation in Missouri?
Yes. Air Sense Environmental is licensed through IEMA/#RNM20232346. All radon mitigation work is performed by Jake Lusby. Certified contractors are required to follow EPA-approved mitigation standards.
How long does a radon mitigation system installation take?
Most radon mitigation systems are installed in a single day, typically 2 to 4 hours for a standard home. You can usually return to normal activity the same day.
What type of radon mitigation system do you install?
The most common system we install is sub-slab depressurization (SSD), which draws radon from beneath your foundation and vents it safely outside through a PVC pipe and fan system. The right approach depends on your home’s foundation, basement, crawl space, or slab-on-grade. We assess this during the free estimate.
Does radon mitigation really work?
Yes. Properly installed radon mitigation systems reduce indoor radon levels by up to 99% in most homes. We recommend a follow-up radon test to confirm your levels are below the EPA action level. See the data on whether radon mitigation really works.
What is the difference between radon testing and radon mitigation?
Radon testing measures the concentration of radon gas in your home, it’s how you find out whether you have a problem. Radon mitigation is the installation of a system designed to reduce that concentration to safe levels. Testing always comes first; mitigation is only recommended if results exceed the EPA action level of 4 pCi/L. Air Sense Environmental offers both services.
Does Air Sense Environmental serve my area?
Yes. Air Sense Environmental serves the greater St. Louis metro area and surrounding communities in both Missouri and Illinois, including St. Louis County, St. Charles County, Madison County, and St. Clair County. If you’re not sure whether your address falls within our service area, call us at 314-664-9807 and we’ll confirm. See the full service area.
What happens if my radon levels are still high after mitigation?
If a follow-up test shows levels are still at or above 4 pCi/L, we assess the system and make the necessary adjustments, which may include upgrading the fan, adding a second suction point, or sealing foundation entry points. Air Sense Environmental stands behind every installation.
Where We Work
Both sides of the river.
Headquartered in Edwardsville, serving the full St. Louis metro, Missouri and Illinois.
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Headquartered in Edwardsville, serving the whole metro.
St. Louis Radon Experts
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Free in-home estimate, custom-designed system, 24-hour availability across the St. Louis metro.
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