Radon mitigation in Tinley Park & the southwest suburbs

Illinois radon mitigation license RNM2018212

High radon? Give American Radon Systems a call.

Haven’t tested yet? Cook County has a free test kit, and Will County has one for $8. You can also buy a radon detector and use it again and again. Our testing page shows how to get a kit.

If your test comes back high, call us or send your info. We’re a family-owned company, and we fix radon every day. We’ll come out, look at your home, tell you what it needs, and give you the price. We can usually do the work within a week or two.

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State licensed · 700+ Google Reviews

What can we help you with?

I haven’t tested yet

Get a free or $8 test kit from your county.

How to get a kit →

My home tested high

Send us your result and your town.

Send your information →

I’m buying a home

Find out what the system will cost before you close.

Help for buyers →

I’m selling a home

Tell us your closing date, and we’ll plan the work around it.

Help for sellers →

I’m helping a client

Send us the address and who we should call.

Help for realtors →
American Radon Systems service vehicles at a suburban Illinois home
What We Do

Our radon services

We put in new systems and fix old ones, even if another company put them in.

New radon mitigation systems

For homes with a basement, a crawl space, or a slab.

Radon installation →

Radon fan replacement

Fan noisy or stopped? We’ll check the whole system and replace the fan if it needs it.

Fan replacement →

Passive system activation

Have a radon pipe but no fan? If your home tests high, we can usually add a fan to the pipe you have.

Activate an existing pipe →

Moving or rerouting a system

Finishing the basement or adding on? We’ll tell you what has to move, what can stay, and which parts we can reuse.

Move a radon system →

What does radon mitigation cost?

Our price ranges, and what makes one home cost more than another.

See the cost guide →

Buying or selling? Read our real estate guide. Realtors sending us a client can use the realtor page.

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How It Works

What happens on install day

Bill plans the system for your home and personally stops by during installation. Our crew does the work, so Bill isn't there the whole time. Most jobs are done in one visit.

See How It Works

Our customers say it best

Good work. Good people.

★★★★★ 5.0 · 700+ Google Reviews

700+ Google reviews · Last verified 2026-10-23. See Google for the current count.

Read our reviews on Google ↗

★★★★★

“Bill and Jose were very professional, knowledgeable and friendly. Bill clearly explained how the Radon Mitigation System would work. They were on time and finished in the time frame that was stated. They were respectful of our house and did a wonderful job of clean up. We would highly recommend them!”
Ed and Cheryl TyrchaSeptember 2025 · Google review

★★★★★

“Bill and Jose were great! Arrived as scheduled. Cleaned up when finished Mitigation system looks good inside and outside. Outside isn’t visible from the street!”
Robert SchroederJuly 2024 · Google review

★★★★★

“Bill and Jose were fantastic from start to finish. They explained the process clearly and answered all my questions. The installation was quick, efficient, and mess-free—I barely noticed they were there! I highly recommend their radon mitigation services for anyone looking for professional and hassle-free work.”
Mark DreherMarch 2025 · Google review

★★★★★

“Top notch job. Bill and his crew installed a 2 suction point system, 1 point in the basement and 1 in the crawlspace addition. Along with the suction points, they laid down a vapor barrier in the crawl space, a new sump pump cover and caulked any cracks in the basement floor that were exposed. Bill and his crew were neat with thier work and had no issues answering and questions or concerns I had. Would definitely recommend to anyone who needs a radon system install.”
Andrew HartmanMay 2021 · Google review

★★★★★

“I bought a house that had a Radon system installed in it by Bill from a previous owner. I was having an issue with the sump pump that was attached to the system and called Bill to confirm what I needed to be aware of with the radon system. Bill talked me through the system on a Sunday and helped me think of issues that could be what is wrong with the sump pump. Ended up being able to get the pump working again and Bill was super helpful.”
AnthonyAugust 2026 · Google review
Common Questions

Questions homeowners ask us

Don’t see your question? Call Bill.

Does American Radon Systems test for radon?
We have links to free and $8 radon test kits, based on which county you live in. Cook County mails suburban residents a free kit, and Will County sells one for $8 at its offices. If you want to watch your level year-round, we recommend a reusable radon detector you keep. If your result is high, call Bill or fill in your info for a quote. The kit does the measuring, not the person who would sell you the fix. Buying or selling? A sale usually needs a licensed professional test, and we will point you to one.
What is a radon mitigation system and how does it work?
Most homes use sub-slab depressurization: a fan and pipe pull soil gas from under the foundation and vent it outside above the roofline. A U-tube manometer on the pipe shows the fan is creating suction. The exact layout depends on basements, crawl spaces, slabs, sumps, and finished spaces. Bill designs for the home you have, not a one-size layout.
How long does a typical radon mitigation install take?
Most residential installs are completed in a single visit, often a few hours once the plan is set. Bill looks at the home first so materials and routing are right. Real estate closings get scheduled around the calendar when you tell us the date early.
How much does radon mitigation cost?
Passive system activation starts at $900. A full new system runs $1,950 to $2,450 for most homes. A few homes need much more, up to $4,000 to $6,500 for a gravel crawlspace that has to be sealed or a home with more than one foundation type. Fan replacement on an existing system is $575. Bill looks at the home first, then gives you the price before work starts, and that number does not change unless you change the job. See our cost page for what changes the price.
What is your warranty?
If a fan we installed fails during its first five years, the visit, labor, and replacement fan are covered.Read the customer-care warranty details.
My radon fan is noisy. What does that mean?
A fan that becomes noticeably louder, rattles, grinds, hums, or sends vibration through the wall may be wearing out or may have another system issue that should be checked. We can usually come out within a day or two, including systems another company installed. There is no trip charge. A fan replacement is $575, including the fan, the visit, the labor, and a new five-year fan warranty, and Bill confirms that before the visit. If the failed fan is one we installed and it is within the five-year warranty, the service visit, labor and replacement fan are included at no cost. Call Bill’s cell at (815) 370-9682, and send a clear photo of the fan and manometer if you can.
Is (815) 370-9682 Bill’s cell phone?
Yes. That is Bill’s cell. Call, text, or send a photo of your fan or manometer. It is not a call center.
Are you state licensed in Illinois?
Yes. American Radon Systems holds Illinois radon mitigation license RNM2018212. Anyone hired to perform radon mitigation in Illinois must be appropriately state licensed. Illinois exempts a person doing measurement or mitigation in the dwelling where that person resides. Measurement and mitigation are separate license categories in Illinois; American Radon Systems holds the mitigation license and helps you get tested with free or $8 county kits.
What areas do you serve?
American Radon Systems serves a focused area across Chicago's south and southwest suburbs, including Tinley Park, Frankfort, Mokena, New Lenox, Manhattan, Orland Park, Orland Hills, Palos Park, Palos Heights, Oak Forest, Lemont, Homer Glen, Lockport, Crest Hill, and Shorewood.See all towns

Get a price for your home

Call us, or send your town and your radon result if you have one.

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