# St. Louis Radon Reviews & Project Results

- **URL:** https://airsenseenvironmental.com/reviews-projects/
- **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 Air Sense Environmental St. Louis Radon Reviews & Project Results Live Google Reviews From St. Louis Homeowners Recent Projects See the Work St. Louis Radon Mitigation Reviews & Project Results Real St. Louis homeowners. Real radon reductions. Backed by 150+ five-star Google reviews and a portfolio of installs that have taken homes from dangerous radon levels to well below the EPA action threshold of 4.0 pCi/L. IEMA-Certified NRPP-Certified Free In-Home Estimates Call 314-664-9807 Get a Free Estimate Credentials & Certifications Owner Jake is NRPP-certified and fully insured, and Air Sense Environmental holds Illinois IEMA license #RNM20232346. We’re an A-rated, BBB-accredited business and active members of HomeAdvisor, the Institute of Environmental Management and Assessment, the Southwestern Illinois Board of Realtors, and the St. Louis Association of Realtors. NRPP-certified radon mitigation professional IEMA Licensed, #RNM20232346 BBB Accredited, A rating Fully insured for residential and commercial work Active member: HomeAdvisor, IEMA, SW Illinois Board of Realtors, St. Louis Association of Realtors What St. Louis Homeowners Say Every review below is verified on Google. Names and dates are quoted as published. Read All 150+ Google Reviews Project Results: Before & After The EPA action threshold for radon is 4.0 pCi/L. Below are real reductions Air Sense Environmental has delivered for St. Louis-area homeowners. Project 1: High-Level Basement Mitigation Before: 12 to 14 pCi/L (3 to 4× the EPA action level) After: 0.1 to 0.4 pCi/L Reduction: ~97 to 99% System: Sub-slab depressurization with monitored exhaust fan Project 2: Severe Radon Reduction Before: 30+ pCi/L (7× the EPA action level) After: Less than 1 pCi/L Reduction: 96%+ System: Engineered SSD with sealed entry points and high-flow fan Project 3: Two-Zone Whole-Home Mitigation Before: 4 pCi/L (upstairs) and 10 pCi/L (basement) After: Both zones below 2 pCi/L System: Multi-point depressurization with balanced exhaust Project 4: 24-Hour Turnaround Result: Radon levels reduced to an insignificant value within 24 hours of system commissioning System: Standard SSD with same-day post-install testing Project 5: Sump-Pump-Integrated Mitigation Scope: Sump pump replacement combined with radon system tie-in Result: Measurable radon reduction confirmed by post-install testing Note: Sump-integrated mitigation is ideal for homes with active water management needs Project 6: Historic Home Preservation Challenge: Preserve aesthetic and structural integrity of a historic property Solution: Custom-routed exhaust path with concealed components Result: Radon levels significantly reduced with no impact on the home’s appearance Where We Work Air Sense Environmental serves the greater St. Louis metro across both sides of the Mississippi, including: Missouri St. Louis City & County St. Charles County Jefferson County Franklin County Webster Groves, Clayton, Brentwood, Maplewood Wildwood, Florissant, University City Richmond Heights, St. Peters, Arnold Illinois Madison County St. Clair County Godfrey, Maryville, Jerseyville Brighton, Elsah Ready to See Your Own Radon Numbers Drop? If your home tested above 4.0 pCi/L, or you’d like to find out where your levels stand, we’ll give you a straight answer, a fair quote, and a system designed for your home. Most installs are completed in a single visit. 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