Full Service·Andover, CT
5.0 (12 Google reviews)
MitigationTestingDiagnostic
Free Estimates
A dedicated radon contractor serving Andover, Connecticut, offering radon mitigation, radon testing, diagnostic radon testing. Operating since 1995.
Radon Mitigation Contractors in Connecticut
Connecticut has 61 contractors in this directory across 34 cities. Radon is a naturally occurring radioactive gas that can enter homes through foundation openings. EPA guidance sets 4.0 pCi/L as the action level for mitigation, and many homeowners choose to improve levels even below that threshold.
EPA Radon Zones in Connecticut
Much of Connecticut is Zone 1, particularly areas along the Reading Prong geological formation that runs through the state.
State Regulations
Connecticut requires radon mitigators to be certified through NRPP or NRSB. The Department of Public Health oversees radon programs.
Connecticut's granite bedrock, part of the Reading Prong, produces some of the highest radon levels in New England.
Radon FAQ for Connecticut
Does Connecticut require radon disclosure in home sales?
Yes. Connecticut requires sellers to disclose known radon test results to buyers.
Which Connecticut towns have the highest radon?
Towns along the Reading Prong in western and central CT — including Danbury, New Milford, and the Litchfield County area — tend to have higher levels.
Not sure what service you need?
Answer 5 quick questions and get matched with the right contractor.
Cities in Connecticut
West Hartford (5)Andover (4)Seymour (4)Terryville (4)Beacon Falls (3)Windsor (3)Bridgeport (2)Clinton (2)Derby (2)Easton (2)Granby (2)Madison (2)Marlborough (2)South Windsor (2)Stamford (2)Stratford (2)Ansonia (1)Bloomfield (1)Brookfield (1)Coventry (1)Danbury (1)Ellington (1)Essex (1)Fairfield (1)Hartford (1)Meriden (1)Middletown (1)Milford (1)Naugatuck (1)North Haven (1)Norwalk (1)Old Saybrook (1)Ridgefield (1)Sherman (1)
Contractors
Full Service·Andover, CT
5.0 (12 Google reviews)
MitigationTestingDiagnostic
NRPP Certified RMS/RMPFree Estimates
Dedicated radon contractor in Andover, Connecticut, providing radon mitigation, radon testing, diagnostic radon testing. NRPP certified: NRPP Radon Mitigation Specialist and NRPP Radon Measurement Professional. Established in 1995.
Full Service·Andover, CT
5.0 (12 Google reviews)
MitigationTestingDiagnostic
NRPP Certified RMS/RMPFree Estimates
Based in Andover, Connecticut, this dedicated radon contractor provides radon mitigation, radon testing, diagnostic radon testing. Carries NRPP Radon Mitigation Specialist and NRPP Radon Measurement Professional certification from NRPP. In business since 1995.
Full Service·Andover, CT
MitigationTestingNew ConstructionCommercialWater Treatment+2
NRPP Certified RMP
Dedicated radon contractor in Andover, Connecticut, providing radon mitigation, radon testing, radon-resistant new construction (RRNC), commercial radon services. Holds NRPP Radon Measurement Professional certification through the National Radon Proficiency Program. Handles basement, slab-on-grade foundations, and uses sub-slab depressurization and passive radon systems.
Full Service·Ansonia, CT
MitigationTestingCommercialWater Treatment
NRPP Certified RMS/RMP
Full Service·Beacon Falls, CT
4.9 (72 Google reviews)
MitigationTestingCommercial
Free Estimates
Serving Beacon Falls, Connecticut and surrounding areas with radon mitigation, radon testing, commercial radon services. Uses HRV/ERV ventilation.
Full Service·Beacon Falls, CT
MitigationTestingCommercial
NRPP Certified RMS/RMPFree Estimates
Operating out of Beacon Falls, Connecticut, this dedicated radon contractor offers radon mitigation, radon testing, commercial radon services. Carries NRPP Radon Mitigation Specialist and NRPP Radon Measurement Professional certification from NRPP. Uses HRV/ERV ventilation.
Full Service·Beacon Falls, CT
MitigationTestingCommercial
NRPP Certified RMS/RMPFree Estimates
Dedicated radon contractor in Beacon Falls, Connecticut, providing radon mitigation, radon testing, commercial radon services. NRPP certified: NRPP Radon Mitigation Specialist and NRPP Radon Measurement Professional. Uses HRV/ERV ventilation.
Bloomfield, CT
Commercial
NRPP Certified RMP
Full Service·Bridgeport, CT
4.9 (64 Google reviews)
MitigationTestingCrawlspaceWater Treatment
Free Estimates
Dedicated radon contractor in Bridgeport, Connecticut, providing radon mitigation, radon testing, crawlspace radon solutions, waterborne radon treatment. Handles crawlspace foundations, and locally-owned business.
Bridgeport, CT
Testing
NRPP Certified RMP
Full Service·Brookfield, CT
MitigationTestingNew ConstructionCommercialWater Treatment+2
NRPP Certified RMP
Full Service·Clinton, CT
4.9 (53 Google reviews)
MitigationTestingNew ConstructionCommercialWater Treatment+1
Dedicated radon contractor in Clinton, Connecticut, providing radon mitigation, radon testing, radon-resistant new construction (RRNC), commercial radon services. Operating since 2022. Handles basement, slab-on-grade foundations, and uses sub-slab depressurization and HRV/ERV ventilation.
Full Service·Clinton, CT
MitigationTestingCommercialWater Treatment
NRPP Certified RMS/RMP
Coventry, CT
Commercial
NRPP Certified RMP
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