Serving Chicagoland since 2008. We guarantee safe radon levels below 4.0 pCi/L within 24 hours, backed by a transferable lifetime warranty.
Whether you're dealing with dangerous radon gas or invasive mold, our licensed professionals resolve it fast — with a guarantee that actually means something.
Radon is the #2 cause of lung cancer in the U.S. and over one-third of Chicagoland homes test above the EPA's action level. We've been eliminating it since 2008 — faster, more reliably, and more affordably than anyone in the area.
One of Chicagoland's most affordable and fastest black mold removal companies. We don't just remove the mold — we identify the moisture source so it doesn't come back. As an IL licensed home inspector, we see what others miss.
Most homeowners don't know what a mitigation system actually does. Here's exactly how radon enters your home and how our sub-slab depressurization system removes it — permanently, in 24 hours.
Natural uranium decay produces radon gas underground. It seeps upward through foundation cracks and porous concrete — invisible, odorless, accumulating.
A small access hole is made in your basement floor. A PVC pipe draws gas from beneath the slab before it enters your living space.
A low-profile exterior fan creates constant negative pressure under your slab — 24/7, year-round. No filters to replace, no maintenance required.
Gas exits above the roofline where it disperses harmlessly. We verify levels with a post-install test. Guaranteed below 4.0 pCi/L within 24 hours.
Real results for real families. Here's what our customers say after we've protected their homes.
"Our radon test came back at 8.2 — way over the limit. Assure came out the next day, installed the system, and 24 hours later we were at 1.8. Unbelievable turnaround. Very professional team."
"Found black mold in our basement after a pipe leak. Assure was out within 48 hours, gave us a fair price, and completely resolved the problem. They also found what caused it. Highly recommend."
"Used Assure when selling my home. Radon was flagged during inspection. They got it done fast, under budget, and provided all the documentation my buyer's agent needed. Lifesaver."
We combine 17+ years of hands-on expertise with fair pricing, fast service, and warranties that actually mean something. Here's what makes us different.
Your radon system is covered for life — and the warranty transfers to the next owner when you sell. A real differentiator at resale.
Radon levels guaranteed below the EPA limit within 24 hours of installation. No waiting weeks to find out if it worked.
Free estimates, detailed written proposals, zero hidden fees. You know exactly what you're paying before you sign anything.
Available every day, 7 AM to 8 PM. Radon and mold don't take weekends off — and neither do we.
Our team responds fast. Call us or fill out the form and we'll send a detailed written proposal — free.
We inspect your property, identify the issue, and walk you through the best solution for your situation.
Our crew handles everything. Radon systems are confirmed effective within 24 hours of installation.
We verify results and provide full documentation. Warranty issued. Your home is protected — for good.
Radon and mold are invisible threats affecting millions of homes. Understanding the risks is the first step to protecting your family.
Radon is a colorless, odorless radioactive gas that seeps up from soil and rock into homes and buildings. It's the leading cause of lung cancer among non-smokers and the second overall — right behind smoking.
Unlike carbon monoxide, radon doesn't make you feel sick immediately. It accumulates silently over years, making it especially dangerous. The EPA estimates it causes over 21,000 deaths per year in the U.S.
Mold thrives in warm, moist environments — basements, attics, walls near leaky pipes, or areas with poor ventilation. It spreads quickly and can affect your health long before it becomes visible.
Short-term exposure triggers sneezing, runny nose, and skin rash. Long-term exposure can cause chronic respiratory issues, persistent fatigue, brain fog, and in severe cases, mold growth in the lungs.
Expert radon and mold mitigation across four Illinois counties — residential and commercial properties both welcome.
Joliet, Naperville, Bolingbrook, Romeoville & more
Aurora, Wheaton, Downers Grove, Lisle & more
Chicago, Orland Park, Tinley Park & more
Kankakee, Bourbonnais, Bradley & more
Not sure if we cover your area? Give us a call — we'll let you know right away.
No fluff — straight answers to what homeowners actually ask us before they call.
Still have a question? Call us directly — real people answer 7 days a week, 7 AM to 8 PM.
Fill out the form for a free estimate or call us directly. We respond fast, 7 days a week — real people, no automated systems.
No obligation. We respond same day.
Need a radon or mold test before mitigation? Our trusted partner Precision Environmental Services provides thorough inspections, accurate sampling & testing, and Post Remediation Verification (PRV) clearance reports.