Project 1: High-Level Basement Mitigation
- Before: 12–14 pCi/L (3–4× the EPA action level)
- After: 0.1–0.4 pCi/L
- Reduction: ~97–99%
- System: Sub-slab depressurization with monitored exhaust fan
Real St. Louis homeowners. Real radon reductions. Backed by 135+ 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.
Call 314-664-9807 for a Free Consultation Request a Free QuoteOwner 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. Every mitigation install is backed by post-mitigation testing to verify the system is performing at spec.
Every review below is verified on Google. Names and dates are quoted as published.
“Initial radon readings were in the 12 to 14 pCi/L range. After Jake’s mitigation, levels dropped to the 0.1 to 0.4 pCi/L range.”
“Radon down to less than 1% from over 30. Awesome work.”
“Initial readings were 4 upstairs and 10 in the basement. After service, both levels are under 2.”
“Very easy to communicate and work with Jake. My levels were down to an insignificant value within 24 hours.”
“Jake and his tech were 10 minutes early. Purchased a sump pump replacement. Our radon levels have already dropped and that is such a relief.”
“For our historic home, Jake was reassuring from the beginning. The work preserved the integrity and appearance of the house, and our radon is way down.”
“Jake troubleshot improper vent pipe installation, drilled a new foundation vent hole, and reattached piping. Pricing was more than fair.”
“Went above and beyond and stuck with their original quote. Jake made the system as covert as possible.”
“Fast, efficient, and highly professional from start to finish. Appreciated the veteran hiring practices.”
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. Every system shown was installed by our team and verified with post-mitigation testing, these are photos of our actual installs, not stock images.
Air Sense Environmental serves the greater St. Louis metro across both sides of the Mississippi, including:
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.
Call 314-664-9807 Request a Free Consultation