# O’Fallon, MO

- **URL:** https://airsenseenvironmental.com/service-area/ofallon-mo/
- **Published:** 2026-07-20

Skip to content Radon Mitigation Services ▾ Radon Testing Commercial Radon Mitigation Commercial Radon Testing Indoor Air Quality Crawl Space Encapsulation Service Area Resources FAQ Blog Podcast Reviews & Projects About Us Contact 314-664-9807 Free Estimate Radon Mitigation Services Radon Testing Commercial Radon Mitigation Commercial Radon Testing Indoor Air Quality Crawl Space Encapsulation Company Service Area Resources FAQ Blog Podcast Reviews & Projects Media Room About Us Contact Call 314-664-9807 Home › Service Area › O’Fallon, MO Service Area · Ofallon, MO O’Fallon, MO IEMA-Certified NRPP-Certified Free In-Home Estimates Call 314-664-9807 Get a Free Estimate Professional Radon Testing and Radon Mitigation Services in O’Fallon, MO Welcome to Air Sense Environmental, your premier provider of radon testing, radon mitigation, indoor air quality testing, and crawl space encapsulation in O’Fallon, MO. Our team is dedicated to ensuring the health and safety of your home by addressing indoor air concerns, particularly the dangers of radon gas exposure and poor air quality. Why O’Fallon, MO, Residents Should Be Concerned About Radon O’Fallon, MO, is a thriving city in St. Charles County, known for its rich history, strong economy, and vibrant community. However, beneath its picturesque landscapes lies an environmental concern that many homeowners may not be aware of, radon gas. Radon is a naturally occurring radioactive gas that seeps into homes through the soil. According to the Environmental Protection Agency (EPA), prolonged exposure to elevated radon levels is a leading cause of lung cancer. In Missouri, particularly in St. Charles County, radon levels have been found to exceed the EPA’s action threshold, making radon testing a critical step for homeowners. Our team at Air Sense Environmental is dedicated to identifying and mitigating radon risks in O’Fallon homes, ensuring families breathe cleaner, safer air. About O'Fallon, MO O'Fallon ( oh-FAL-ən) is a city in St. Charles County, Missouri, United States. It is part of the St. Louis metropolitan statistical area, located along Interstates 64 and 70 between Lake St. Louis and St. Peters. As of the 2020 census, O'Fallon had a population of 91,316, making it the most populous suburb of St. Louis, as well as the most populous municipality in St. Charles County and the 7th most populous in Missouri. O'Fallon's namesake in St. Map of O'Fallon, MO Weather in O'Fallon, MO Scattered Clouds 82°F Temperature 15mph Wind Speed 76% Our Services in O'Fallon, MO The only way to determine if your home has dangerous radon levels is through professional testing. Our process includes: 48-hour radon monitoring using nationally calibrated devices Same-day results for quick decision-making EPA-recommended testing every five years (or every two years if a mitigation system is in place) While home test kits are available, they may not provide accurate readings. Our advanced monitoring ensures precise results to protect your family. If high radon levels are detected, our custom radon mitigation systems effectively reduce them through: Sub-slab depressurization and proper ventilation techniques Tailored radon reduction systems based on your home’s construction Professional installation by certified specialists Regular maintenance and follow-up testing for continued safety Our systems ensure radon levels stay within EPA-approved limits, offering you peace of mind. Indoor Air Quality Testing Your home’s air can contain invisible threats, including allergens, mold, bacteria, pet dander, and pollutants. Our Model 5200 IAQ Monitor provides real-time data on: Dust & particulates (PM2.5/PM10) Chemical pollutants Carbon dioxide & carbon monoxide Temperature & humidity Our expertise ensures effective solutions for improving your home’s air quality and creating a healthier living environment. Moisture issues in your crawl space can lead to mold growth, structural damage, and poor indoor air quality. Our encapsulation services in O’Fallon include: Sealing crawl spaces to prevent external moisture intrusion Installing dehumidifiers for humidity control Eliminating mold risks and improving air quality Encapsulation protects your home’s foundation and indoor air, reducing allergens and humidity-related concerns. Why Choose Air Sense Environmental? Locally trusted experts in radon mitigation and air quality solutions Advanced technology for accurate radon and air quality testing EPA-compliant and certified professionals Not sure where to start? Testing comes first. Book a radon test or request a free estimate and we'll walk you through it. Fast, reliable service with same-day radon test results Long-term support and monitoring for continued indoor air safety Crawl Space Encapsulation in O'Fallon, MO Protect Your Home from Moisture & Mold Many homes in O'Fallon have crawl spaces prone to high humidity, leading to mold growth, wood rot, and poor air quality. Our crawl space encapsulation services include: Sealing off moisture with durable vapor barriers Installing high-performance AprilAire dehumidifiers Preventing structural damage & pest infestations Improving energy efficiency and air quality Encapsulating your crawl space can eliminate musty odors, reduce allergens, and protect your home’s foundation. Neighborhoods in O'Fallon, MO O'Fallon, Ellendale, The Ville, Greater Ville, Columbus Square, Shaw, Boulevard Heights, North Pointe, Patch, The Gate, West End, St. Louis Hills Things To Do in O'Fallon, MO Fort Zumwalt Park Dames Park O'Day Park Brendan's Playground Ofallon Lights Kinetic Park Civic Park St Charles County, Mid America Veterans Museum Rockin' Jump O'Fallon 18 North Central Zumwalt's Fort Knaust Park Veterans Memorial Walk Sports Park Paul A. Westhoff Park Winghaven Boardwalk Historic Heald Home August A. Busch. Memorial Conservation Area Broemmelsiek Park Astronomy Site Broemmelsiek Park O’Fallon, MO: A Thriving Community with Radon Awareness Needs O’Fallon, MO, ranked among the best places to live in the state, is home to over 90,000 residents and boasts top-rated schools, vibrant parks, and a booming economy. With its deep historical roots, including its role as a 19th-century railroad hub, the city has flourished into a modern suburban center. Despite its economic growth, environmental factors like radon pose potential health risks. The region’s geological makeup contributes to higher-than-average radon levels, making radon testing and mitigation essential for homeowners. Schedule Your Radon Testing or Radon Mitigation System Assessment Today Protect your family from the risks of radon and poor air quality. Schedule a consultation with Air Sense Environmental in O’Fallon, MO, today! Related from Air Sense Environmental: Radon Mitigation, Radon Testing, Crawl Space Encapsulation, Indoor Air Quality Testing, and Reviews & Projects. More Services in O’Fallon, MO Explore Air Sense Environmental’s additional services available to O’Fallon, MO homeowners: Crawl Space Encapsulation in O’Fallon, MO Indoor Air Quality in O’Fallon, MO Radon Testing in O’Fallon, MO From Our Work Explore More From Air Sense Services in O’Fallon, MO Crawl Space Encapsulation in O’Fallon, MOIndoor Air Quality in O’Fallon, MORadon Mitigation in O’Fallon, MORadon Testing in O’Fallon, MO Nearby Communities Pacific, MORichmond Heights, MORock Hill, MOSt. Charles, MOSt. Louis, MOSt. Peters, MOSwansea, ILTroy, IL Learn More Radon Mitigation in St. Louis, MORadon TestingAll Service AreasGet a Free Estimate Get Your Number Radon under control. Air you can trust. Free in-home estimate, custom-designed system, 24-hour availability. Call 314-664-9807 5237 Old Alton Edwardsville Rd Edwardsville, IL 62025 314-664-9807 · Open 24 hours NRPP-Certified · IEMA License #RNM20232346 Services Radon Mitigation Radon Testing Commercial Radon Commercial Radon Testing Radon Fan Replacement Sub-Slab Depressurization Indoor Air Quality Crawl Space Encapsulation Company About Us Service Area Reviews & Projects FAQ Blog Podcast Resources Media Room Contact © 2026 Air Sense Environmental. All rights reserved. Radon Mitigation & Testing · St. Louis, MO & Metro East, IL Call 314-664-9807 Free Estimate