PE
Protect Environmental
Certified Professional
Licensed Provider: David Kulakowski
Full Service•Bolingbrook, IL
MitigationTestingCrawlspaceNew ConstructionCommercial+2
Certified RMP/RMS
Radon Pros in Illinois
46 contractorsEPA zone context: Most of northern and central Illinois is Zone 1. The Chicago metro and surrounding suburbs are among the highest-risk areas.
CH
MitigationTestingCommercial
RG
MitigationTestingCrawlspaceCommercialVapor Barrier+1
5-Year WarrantyFree Estimates
Radon Gone, LLC is a dedicated radon services company serving Chicago, IL. Services include radon testing, radon mitigation system installation. Works with basements, crawlspaces. Methods include heat recovery ventilation. Rated 5.0/5 on Google based on 57 reviews. Offers free estimates, real estate transaction testing. Provides a 5-year warranty on mitigation systems.
AS
Air Sense Environmental- Radon Mitigation & Testing
5.0 (126 Google reviews)
Identity Verified
Full Service•Edwardsville, IL
MitigationTestingWater TreatmentPost-Test
Free Estimates
ME
Miller Environmental Mitigation
4.9 (52 Google reviews)
Identity Verified
Full Service•Glen Carbon, IL
MitigationTesting
DS
David Smith Radon Remedies
5.0 (54 Google reviews)
Identity Verified
Mitigation Specialist•Heyworth, IL
MitigationTestingCommercialPost-Test
Free Estimates
David Smith Radon Remedies is a dedicated radon services company serving Heyworth, IL. Established in 1998. Services include radon mitigation system installation, radon testing, commercial radon services. Works with basements. Methods include heat recovery ventilation. Rated 5.0/5 on Google based on 54 reviews. Offers free estimates, real estate transaction testing.
AR
MitigationTestingNew ConstructionPost-Test
Advanced Radon Mitigation LLC is a dedicated radon services company serving Highland, IL. Services include radon testing, radon mitigation system installation. Works with basements. Methods include heat recovery ventilation. Rated 4.8/5 on Google based on 16 reviews.
R&
Radon & Mold Testers of Illinois
5.0 (1 Google reviews)
Identity Verified
Full Service•Highland Park, IL
MitigationTestingCommercial
PR
MitigationTestingFan RepairNew ConstructionSump Pump+1
RH
RK Home Guardians Inc.
4.0 (197 Google reviews)
Certified Professional
Licensed Provider: Krzysztof Kaczor
Testing Specialist•Lisle, IL
Testing
Certified RMS/RMPFree Estimates
RT
MitigationTestingCommercial
RR
MitigationTestingCommercial
5-Year Warranty
RX
MitigationTesting
AH
MitigationTestingCommercial
CH
Chicagoland Home Inspectors Inc.
5.0 (319 Google reviews)
Identity Verified
Full Service•Northbrook, IL
MitigationTestingCommercial
Data provided by Google Maps
State Info
Radon levels vary house-to-house even in the same city. Testing your own home is the only reliable way to know your risk.
Popular Cities for Radon Mitigation in Illinois
Radon mitigation in Chicago, Illinois9 local contractors listedRadon mitigation in Naperville, Illinois3 local contractors listedRadon mitigation in New Lenox, Illinois3 local contractors listedRadon mitigation in Lisle, Illinois2 local contractors listedRadon mitigation in Alsip, Illinois1 local contractors listedRadon mitigation in Barrington, Illinois1 local contractors listedRadon mitigation in Bolingbrook, Illinois1 local contractors listedRadon mitigation in Bourbonnais, Illinois1 local contractors listedRadon mitigation in Danville, Illinois1 local contractors listedRadon mitigation in Edwardsville, Illinois1 local contractors listedRadon mitigation in Franklin Park, Illinois1 local contractors listedRadon mitigation in Geneseo, Illinois1 local contractors listedRadon mitigation in Glen Carbon, Illinois1 local contractors listedRadon mitigation in Glendale Heights, Illinois1 local contractors listedRadon mitigation in Heyworth, Illinois1 local contractors listedRadon mitigation in Highland, Illinois1 local contractors listedRadon mitigation in Highland Park, Illinois1 local contractors listedRadon mitigation in Johnsburg, Illinois1 local contractors listedRadon mitigation in Joliet, Illinois1 local contractors listedRadon mitigation in Mokena, Illinois1 local contractors listedRadon mitigation in Morton Grove, Illinois1 local contractors listedRadon mitigation in Mundelein, Illinois1 local contractors listedRadon mitigation in Northbrook, Illinois1 local contractors listedRadon mitigation in Oak Forest, Illinois1 local contractors listed
FAQ: Radon Mitigation in Illinois
Is radon bad in Chicago?
Yes. The Chicago metro area is solidly Zone 1. Cook, DuPage, Lake, and Will counties all have high average indoor radon levels.
Does Illinois require radon testing for home sales?
Illinois requires sellers to disclose known radon hazards. Testing is not mandated but is standard practice in Chicagoland real estate transactions.
How much does radon mitigation cost in Illinois?
Most homeowners in Illinois see mitigation quotes in the low-thousands, but the final cost depends on foundation type, fan location, and pipe routing complexity. A cost calculator can help you benchmark estimates before requesting bids.
Do I need radon testing in Illinois before hiring a contractor?
Yes. A valid short-term or long-term test is the fastest way to confirm if mitigation is needed and to scope the right system design.
What radon level is dangerous in Illinois?
EPA recommends action at 4.0 pCi/L, and many homeowners choose to reduce levels even below that threshold. Most of northern and central Illinois is Zone 1. The Chicago metro and surrounding suburbs are among the highest-risk areas. ZIP-level lookup tools are useful for local context, but home testing is still required.
How do I choose a certified radon contractor in Illinois?
Look for current NRPP or NRSB credentials, ask for post-mitigation test expectations, and confirm local compliance details. Illinois requires radon mitigators to be licensed by the Illinois Emergency Management Agency (IEMA). All radon professionals must pass state examinations.
State Resources for Illinois
Radon mitigation cost in Illinois
Estimate likely project pricing by foundation type and system complexity.
Radon testing guide for Illinois homes
Learn when and how to test, plus how to interpret pCi/L results.
Radon levels and EPA zones in Illinois
See how state-level risk varies and what zone maps can and cannot tell you.
ZIP-level radon risk in Illinois
Check projected local risk by ZIP code before you request quotes.