We’re a family-owned team helping our neighbors take care of high radon. You’ll work directly with the people responsible for your home.
I'm Bill Dahlstrom. I've worked in radon mitigation for 15 years.
American Radon Systems is owner-operated. We serve only Chicago's south and southwest suburbs.
American Radon Systems is a family-owned business based in Tinley Park. We've lived in the Lincoln-Way area since 1999 — these are our towns.
Bill evaluates your home, explains the plan, and personally stops by during your installation. He isn’t on-site the entire time, but he stays involved while our crew handles the work. You’ll receive written system information and warranty terms.
Our work follows current Illinois state requirements, with the system designed for your foundation and layout.
A lot of our work is buyers and sellers trying to keep a closing on track. We stay focused on residential homes across the south and southwest suburbs.
American Radon Systems is a state-licensed, owner-operated radon mitigation company serving the south and southwest suburbs. Bill still meets with homeowners, evaluates the home, and helps plan the system before it is quoted.
Bill studies the home and helps plan the system. Jose turns that plan into clean, careful workmanship.
Bill listens to homeowners, plans the system around the home, and stays involved from the quote through installation. He still picks up the phone. His 7th-grade first-place wrestling medal is still on display at home. He hasn't let anyone forget it.
Colleen runs everything behind the scenes: accounting, invoices, state paperwork, insurance requirements, and HOA coordination. If the business side works, it is because of Colleen.
Jose has installed radon systems alongside Bill since 2018. He is exceptionally good at finding clean pipe routes through finished basements, crawl spaces, additions, and complicated layouts. Once he starts a system, he stays focused and keeps moving until the job is complete.
Bill studies the home and helps plan the system. Jose turns that plan into clean, careful workmanship.
Mitchell is one of Bill and Colleen's sons and part of the family behind the business. He helps when an extra set of hands makes the job move better, especially on larger or more physical installs.
Tyler grew up around the business and the Lincoln-Way community. When he is on a job, he brings the same family-first approach: show up, work carefully, and leave the home respected.
Joe is close to the crew and helps when the work calls for more support, particularly on crawl-space projects and installs that need extra hands.
American Radon Systems is not a call-center operation. Bill evaluates homes and stays involved in design and communication. Colleen keeps the business side organized. Jose leads installation with clean routing and focused workmanship. The field crew follows the company's established process, and American Radon Systems stands behind the work.
That smaller setup is intentional. It keeps communication direct, scheduling realistic, and the finished system tied to the people whose name is on the truck. This is a real company with a capable team, and the homeowner still has direct access to the owner.
American Radon Systems holds Illinois radon mitigation license RNM2018212. Our installation team follows the company's licensed process and current Illinois requirements.
Our service vehicles are stocked for complete mitigation installations. Most systems are finished in one visit.
We work inside people's homes, in their neighborhoods, across the communities we serve. Local trust matters, and we support organizations that reflect our values.
Each install is routed and finished to match the home. A well-designed exterior system is quiet, weatherproof, and barely noticeable from the curb.
From floor protection to sealing slab cracks. The work that happens before the pipe ever goes up.
The parts of a mitigation system most homeowners only see once. We document every install with the same components and standards.
“Bill was on time and completed the work as promised. He explained how the system operated. Highly recommend.”
Who does the work, whether we are licensed, where we work, and who picks up the phone.
Usually Bill and Jose. Most days they run two jobs. Jose stays focused on the PVC routing and install with no phone distractions. Bill restocks the truck, often runs a nearby quote, and comes back as a second set of hands for finish and load-out. Jose has been with Bill since 2018.
Yes. That is Bill’s cell. Call, text, or send a photo of your fan, manometer, or test result. It is not a call center.
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.
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.
Yes. American Radon Systems is fully insured, including general liability and workers compensation, and performs mitigation under Illinois radon mitigation license RNM2018212. If an HOA, lender, or property manager needs insurance paperwork, mention it when you call; Colleen handles insurance requirements and HOA coordination.
Illinois publishes its active radon licensees online. Search the IEMA-OHS radon license lookup by license number, name, employer, or county, or call the Illinois radon program at (800) 325-1245. Our mitigation license is RNM2018212. Measurement (testing) and mitigation are separate license types, so check that the company holds the license for the work you are hiring.
The most useful reference is the public one: 700+ Google reviews with a 5.0 average from homeowners, buyers, and realtors across the south and southwest suburbs. Read a few before you call; they describe the same job you would be hiring us for.
American Radon Systems holds Illinois radon mitigation license RNM2018212. Our installation team follows the company's licensed process and current Illinois requirements.
Verify our Illinois radon mitigation license →