Radon testing in Illinois
40 radon testers in 29 cities. Find your city, then call to book a test.
Jump to a city
- Aurora 1
- Bloomington 1
- Chicago 3
- Glen Ellyn 1
- Heyworth 1
- Highland Park 2
- Joliet 1
- Lake in the Hills 1
- Lockport 1
- Loves Park 1
- Mahomet 1
- Marseilles 1
- Mt Prospect 1
- Naperville 3
- New Lenox 1
- Oak Brook 1
- Oak Forest 2
- Oak Park 2
- Orland Park 1
- Oswego 1
- Plainfield 2
- Rockford 3
- Springfield 1
- Summit 1
- Warrenville 2
- Wayne 1
- Westchester 1
- Westmont 1
- Wheaton 1
Chicago
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Radon Gone, LLC
Radon testing and mitigation
1853 W Estes Ave, Chicago, IL 60626
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Radon Professional Services, LLC
Radon testing and mitigation
3356 W Division St, Chicago, IL 60651
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SafeSmart Home Inspection & Radon Testing
Radon testing and mitigation
5416 S Woodlawn Ave, Chicago, IL 60615
Naperville
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Prospective Home Inspections
Home inspector who tests for radon
1610 Estate Cir, Naperville, IL 60565
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Radon Reduction Systems Inc
Radon testing and mitigation
1113 Cardinal Ln, Naperville, IL 60540
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RKC Radon Testing
Radon testing
1552 Rte 59 #1366, Naperville, IL 60564
Rockford
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Lask Inspection Group, LLC
Home inspector who tests for radon
5286 Gingeridge Ln, Rockford, IL 61114
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Radon Reduction Technologies
Radon testing and mitigation
2205 S Perryville Rd #131, Rockford, IL 61108
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Rogers Radon Testing
Radon testing and mitigation
975 N Main St, Rockford, IL 61103
Highland Park
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Inspect It Chicago - Radon Mitigation & Testing
Radon testing and mitigation
1850 Green Bay Rd Apt 326, Highland Park, IL 60035
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Radon & Mold Testers of Illinois
Radon testing
3219 University Ave #1146, Highland Park, IL 60035
Oak Forest
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Inspect It Chicago - Radon Testing & Mitigation
Radon testing and mitigation
15044 Landings Ln, Oak Forest, IL 60452
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Merino's Home Inspection & Education Inc. & Progeny Radon Testing Services
Radon testing
14824 Forest Edge St, Oak Forest, IL 60452
Oak Park
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Inspect It Chicago - Radon Mitigation & Testing
Radon testing and mitigation
200 N Elmwood Ave, Oak Park, IL 60302
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Radon Professional Services, LLC.
Radon testing and mitigation
840 S Lombard Ave, Oak Park, IL 60304
Plainfield
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Professional Radon Systems, Inc
Radon testing and mitigation
10212 S Mandel St B, Plainfield, IL 60585
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Reliable Radon Inspections, Inc
Radon testing
13400 Rte 59 St 116-300, Plainfield, IL 60585
Warrenville
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DuPage Radon Contractors
Radon testing and mitigation
30W260 Butterfield Rd Unit 210, Warrenville, IL 60555
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Dupage Radon Testing, Inc
Radon testing
29W530 Prairie Ave, Warrenville, IL 60555
Aurora
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JC Radon Solutions
Radon testing and mitigation
3165 Cambria Ct, Aurora, IL 60504
Bloomington
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Sego Inspections Inc
Home inspector who tests for radon
3213 Kirkwood Rd, Bloomington, IL 61704
Glen Ellyn
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Northern Illinois Radon, LLC / US Environmental Testing
Radon testing and mitigation
406 Ramblewood Dr C, Glen Ellyn, IL 60137
Heyworth
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David Smith Radon Remedies
Radon testing and mitigation
16758 E Cheyenne Rd, Heyworth, IL 61745
Joliet
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Inspect It Chicago - Radon Mitigation & Testing
Radon testing and mitigation
1011 Bernard Way, Joliet, IL 60431
Lake in the Hills
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Inspect It Chicago - Radon Mitigation & Testing
Radon testing and mitigation
919 Barbara St, Lake in the Hills, IL 60156
Lockport
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Quality Environmental Testing Inc. Radon and Mold Testing
Radon testing and mitigation
1227 Newbridge Dr, Lockport, IL 60441
Loves Park
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Safe at Home Radon Testing
Radon testing
612 E Renrose Ave, Loves Park, IL 61111
Mahomet
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Radon Mitigation Corporation
Radon testing and mitigation
601 E Main St #102B, Mahomet, IL 61853
Marseilles
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Stuedemann Radon Resolutions
Radon testing and mitigation
2864 E 2539th Rd, Marseilles, IL 61341
Mt Prospect
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NorthWest Radon Testing
Radon testing and mitigation
1204 W Busse Ave, Mt Prospect, IL 60056
New Lenox
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Inspect It Chicago - Radon Mitigation & Testing
Radon testing and mitigation
2978 Horizon Trail, New Lenox, IL 60451
Oak Brook
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Marvel Radon Experts
Radon testing and mitigation
1314 Kensington Rd, Oak Brook, IL 60523
Orland Park
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Summit Radon Mitigations, LLC.
Radon testing and mitigation
7824 Willowood Ct, Orland Park, IL 60462
Oswego
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Guardian Radon Mitigation & Electrical Services
Radon testing and mitigation
451 Burr Oak Dr, Oswego, IL 60543
Springfield
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Safe House Home Inspections
Home inspector who tests for radon
3953 Ware Rd, Springfield, IL 62707
Summit
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Radon Testing and Solutions
Radon testing
5309 S 72nd Ct, Summit, IL 60501
Wayne
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Inspect It Chicago - Radon Mitigation & Testing
Radon testing and mitigation
35W456 Pearson Dr, Wayne, IL 60184
Westchester
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Midwest Radon Services, Inc. | Radon Mitigation Chicago & Elmhurst IL
Radon testing and mitigation
9825 Roosevelt Rd, Westchester, IL 60154
Westmont
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Radon Detection Specialists
Radon testing and mitigation
825 N Cass Ave Unit 310, Westmont, IL 60559
Wheaton
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Radon Testers Inc
Radon testing
130 W Liberty Dr #200, Wheaton, IL 60187
Questions about radon testing
How many radon testers are in Illinois?
radon.directory lists 40 radon testers in Illinois in 29 cities. Each one says on its own website that it tests for radon and has an open Google Business Profile, checked in October 2026.
What kinds of businesses test for radon in Illinois?
Of the 40 businesses listed: 28 radon companies that test and fix radon; 8 radon testing companies; 4 home inspectors. Radon specialists often also fix high levels; home inspectors usually test during a home sale.
How do I choose a radon tester?
The EPA suggests your state radon program as the place to find qualified professionals, and says states list only providers credentialed by a state license or by one of the two national programs, the National Radon Proficiency Program (NRPP) or the National Radon Safety Board (NRSB). Ask a tester which credential they hold. Source.
What radon level needs fixing?
The EPA says to fix your home if the radon level is 4 pCi/L or more, and to consider fixing it between 2 and 4 pCi/L. Source.
Should I get a short-term or long-term radon test?
A short-term test takes a few days and is a quick way to screen a home. A long-term test runs at least 91 days and shows your average level over the year. A high short-term result is usually followed by a second test before deciding to fix. Source.
Can I test for radon myself?
Yes. The EPA notes that test kits are sold online and in home improvement stores, and that some states offer free or discounted kits. A professional test is common when buying or selling a home. Source.