Owner-Operated

Bill Still Picks Up
the Phone

American Radon Systems helps homeowners get elevated radon handled without turning it into a bigger headache. Small on purpose. Residential homes. Not a call center.

Who We Are

A Family-Owned Business from the Lincoln-Way Area

American Radon Systems is a family-owned business based in Tinley Park. We've lived in the Lincoln-Way area since 1999 and have been doing radon mitigation work since 2011.

Bill personally evaluates the home, remains involved in design and customer communication, and still picks up the phone. That is why American Radon Systems has built up 650+ Google Reviews, not because of a sales team, but because of the work itself.

Bill is the owner of American Radon Systems and has been doing radon mitigation work since 2011. American Radon Systems holds Illinois radon mitigation license RNM2018212.

When a homeowner's test comes back elevated, we are the team that fixes it. Every system is designed to match the home, not a one-size-fits-all install. Every job follows current Illinois state requirements. Every customer receives written documentation explaining the system and the warranty coverage that applies.

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.

Bill and Colleen Dahlstrom with their family outside in the Lincoln-Way area.
Authority Built in the Field

Experience Built One Home at a Time

Since 2011, American Radon Systems has installed more than 10,000 radon systems across Chicago's south and southwest suburbs. Bill and Jose bring nearly 25 years of combined radon mitigation experience to the work, while the company remains intentionally personal. 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.

More than 10,000 radon systems installed.
Nearly 25 years of combined radon mitigation experience.
650+ Google Reviews
Five-year complete fan replacement coverage
Illinois state licensed — RNM2018212
Bill personally evaluates each home before the system is designed and quoted.
The Dahlstroms

The People Behind American Radon Systems

Bill Dahlstrom, owner of American Radon Systems.
Owner

Bill

Bill personally evaluates each home before the system is designed and quoted. He listens to the homeowner, studies the foundation and finished spaces, explains the options, and helps plan the system. He remains involved in design and customer communication, and he still picks up the phone. That approach is a big reason American Radon Systems has 650+ Google Reviews. His 7th-grade first-place wrestling medal is still on display at home. He hasn't let anyone forget it.

Colleen Dahlstrom, who runs operations and office coordination for American Radon Systems.
Operations & Office

Colleen

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, lead installer and PVC wizard at American Radon Systems.
Lead Installer · PVC Wizard

Meet Jose, our PVC wizard

Jose has spent years installing radon systems alongside Bill. 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 from the American Radon Systems family and field crew.
Field Support

Mitchell

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 from the American Radon Systems family and field crew.
Field Support

Tyler

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 from the American Radon Systems family and field crew.
Field Support

Joe

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.

The American Radon Systems crew sitting together in a fully encapsulated crawl space during a job in Palos Hills, Illinois.
The Crew

Small by Design

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.

How We Work

State-licensed installation crews serving Chicago's south and southwest suburbs.

Licensed Process

State-Licensed Company

American Radon Systems holds Illinois radon mitigation license RNM2018212. Our installation team follows the company's licensed process and current Illinois requirements.

One-Day Installs

Fully Equipped

Our service vehicles are stocked for complete mitigation installations. Most systems are finished in one visit.

Community

Invested in the Communities We Serve

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.

Ready to talk about your home? Contact Bill →

Our Work

Finished Exterior Systems

Each install is routed and finished to match the home. A well-designed exterior system is quiet, weatherproof, and barely noticeable from the curb.

Two-story suburban home with aluminum radon vent pipe running up the exterior siding to the roof.
Two-story install with aluminum-finish pipe matched to the siding.
Gray vinyl-sided home with clean white PVC radon pipe running up the side past the eaves.
Clean white PVC routed up past the eaves. Minimal visual footprint.
Townhouse exterior in winter with white PVC radon pipe rising above the roofline.
Winter install on a townhouse. PVC exits cleanly above the roofline.
Cream-colored aluminum radon pipe with exterior-mount fan on a tan-sided home.
Cream-finish aluminum system with exterior-mount fan unit.
Tudor-style gray home with an aluminum radon downspout painted to match the house trim.
Aluminum downspout painted to match the house, and the fan painted to match the downspout.
Radon system pipe termination above the shingles, painted to match the shingle color.
Rooftop termination with the pipe painted to match the shingles.
On the Job

Inside the Install

From floor protection to sealing slab cracks. The work that happens before the pipe ever goes up.

Clean PVC radon routing through joists and down to the slab in an unfinished basement.
Clean PVC routing through joists in an unfinished basement.
Basement slab with visible cracks fully sealed with aluminum-grade radon caulking.
Slab cracks sealed with aluminum-grade caulking for airtight performance.
Drop cloths laid over basement stairs and laminate flooring to protect the home during install.
Floor protection laid from entry through the work area. We leave homes clean.
Crawl space fully encapsulated with a white vapor barrier covering the floor.
Crawl space vapor-barrier encapsulation paired with mitigation.
The Details

System Components

The parts of a mitigation system most homeowners only see once. We document every install with the same components and standards.

Sealed black sump pit lid with a white radon-system access port and caution labels.
Sealed sump lid with a removable access port, serviceable without breaking the seal.
Indoor radon pipe showing a U-tube manometer and the Illinois IEMA Mitigation System Tag.
U-tube manometer + Illinois IEMA Mitigation System Tag on every install.
Radon fan unit mounted in an attic above insulation, with PVC pipe exiting through the roof deck.
Attic-mounted fan unit, PVC exiting cleanly through the roof deck.
Exterior radon fan unit with a dedicated electrical disconnect box mounted alongside.
Exterior fan with dedicated electrical disconnect, per code.
Credentials

Licensed and Insured

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 →
State Licensed
Illinois Radon Mitigation License RNM2018212
Fully Insured
General liability & workers comp