#1
English Home Inspections
Louisville, KY
Google rating: No Google rating available
Reviews: 4
Certifications: 1
Certifications
NRSB Mitigation Specialist
Services
radon mitigationMitigation
Best Radon Contractors in Louisville, Kentucky (2026)
Ranked using real Google ratings, review counts, and certification data only.
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#2
502 Inspections, Inc.
Louisville, KY
Google rating: 5.0 (7 reviews)
Reviews: 7
Certifications: 1
Certifications
NRPP Measurement Professional
Services
TestingMeasurement
#3
CMec Environmental
Louisville, KY
Google rating: No Google rating available
Reviews: 0
Certifications: 1
Certifications
NRPP Measurement Professional
Services
TestingMeasurement
#4
Inspect Homes 4 u
Louisville, KY
Google rating: No Google rating available
Reviews: 0
Certifications: 1
Certifications
NRSB Mitigation Specialist
Services
radon mitigationMitigation
#5
Lung Radon LLC
Louisville, KY
Google rating: No Google rating available
Reviews: 0
Certifications: 2
Certifications
NRPP Measurement ProfessionalNRPP Mitigation Specialist
Services
TestingMeasurementMitigationSystem Design
#6
CMec
Louisville, KY
Google rating: 4.8 (53 reviews)
Reviews: 53
Certifications: 1
Certifications
NRPP Measurement Professional
Services
TestingTestingMeasurement
#7
Danny G. Willoughby
Louisville, KY
Google rating: No Google rating available
Reviews: 0
Certifications: 1
Certifications
NRPP Mitigation Specialist
Services
TestingCrawlspace
#8
Ray Williams Inspection & Repair, LLC
Louisville, KY
Google rating: No Google rating available
Reviews: 0
Certifications: 1
Certifications
NRPP Measurement Professional
Services
TestingTestingMeasurement
#9
Radon Masters of Louisville
Louisville, KY
Google rating: No Google rating available
Reviews: 0
Certifications: 2
Certifications
NRSB Mitigation SpecialistNRSB Reduction Specialist
Services
radon mitigationMitigation
#10
Peter A Welsh
Louisville, KY
Google rating: No Google rating available
Reviews: 0
Certifications: 1
Certifications
NRPP Measurement Professional
Services
MitigationTestingCommercial
#11
Metric Environmental LLC
Louisville, KY
Google rating: 3.0 (4 reviews)
Reviews: 4
Certifications: 1
Certifications
NRPP Measurement Professional
Services
TestingMeasurement
#12
Elite Home Inspections, LLC
Louisville, KY
Google rating: No Google rating available
Reviews: 0
Certifications: 1
Certifications
NRPP Measurement Professional
Services
TestingMeasurement
#13
Prochek Home Inspections
Louisville, KY
Google rating: No Google rating available
Reviews: 0
Certifications: 1
Certifications
NRSB Mitigation Specialist
Services
radon mitigationMitigation
#14
Haystack Inspection Services, LLC
Louisville, KY
Google rating: 5.0 (682 reviews)
Reviews: 682
Certifications: 1
Certifications
NRSB Mitigation Specialist
Services
radon mitigationMitigation
#15
World Radon Control Systems
Louisville, KY
Google rating: 2.9 (17 reviews)
Reviews: 17
Certifications: 3
Certifications
NRPP Measurement ProfessionalNRPP Mitigation SpecialistNRPP_RRNC
Services
TestingMeasurementMitigationSystem DesignNew Construction
#16
Protect Environmental, LLC
Louisville, KY
Google rating: 5.0 (10 reviews)
Reviews: 10
Certifications: 1
Certifications
NRPP Mitigation Specialist
Services
MitigationTestingCommercial
#17
Dennis Brewer
Louisville, KY
Google rating: No Google rating available
Reviews: 0
Certifications: 3
Certifications
NRPP Measurement ProfessionalNRPP Mitigation SpecialistNRPP_RRNC
Services
MitigationTestingCommercial
#18
GuardianPro Environmental
Louisville, KY
Google rating: 5.0 (651 reviews)
Reviews: 651
Certifications: 2
Certifications
NRPP Measurement ProfessionalNRPP Mitigation Specialist
Services
TestingMeasurementMitigationSystem Design
#19
Radon Management of KY Inc
Louisville, KY
Google rating: 5.0 (6 reviews)
Reviews: 6
Certifications: 2
Certifications
NRPP Measurement ProfessionalNRPP Mitigation Specialist
Services
TestingMeasurementMitigationSystem Design
#20
Home Inspections Services, LLC
Louisville, KY
Google rating: No Google rating available
Reviews: 0
Certifications: 1
Certifications
NRPP Measurement Professional
Services
TestingMeasurement
#21
Linebach & Funkhouser INC
Louisville, KY
Google rating: 5.0 (7 reviews)
Reviews: 7
Certifications: 1
Certifications
NRPP Measurement Professional
Services
TestingMeasurement
How We Rank Contractors in Louisville
Our ranking methodology is transparent and data-driven. Sponsored placements are clearly labeled and appear separately — they do not influence organic ranking position.
- Google rating — Higher average ratings rank higher. This reflects real customer satisfaction across verified Google Business profiles.
- Review volume — More reviews break ties between similar ratings. A 4.8 with 50 reviews outranks a 4.8 with 3 reviews because the signal is more reliable.
- Certification count — NRPP and NRSB certifications break remaining ties. More certifications indicate broader competency across mitigation, measurement, and specialized techniques.
- Data integrity — All ranking data comes from verified sources: Google Business API, NRPP/NRSB certification databases, and contractor websites. Template-generated or unverifiable data is excluded.
Read our full methodology for details on data sourcing, verification, and quality thresholds.
Related Pages
FAQ
Who is the best radon contractor in Louisville?
English Home Inspections is currently ranked #1 in Louisville based on Google rating, review volume, and certification count from our verified data sources.
How many radon contractors are in Louisville?
We currently list 21 radon contractors in Louisville, Kentucky. 21 hold NRPP or NRSB certifications and 10 have Google reviews.
What should I look for when choosing a radon contractor?
Focus on strong ratings with meaningful review volume, current professional certifications (NRPP or NRSB), and clear service coverage for your home type. A good contractor will assess your specific foundation and provide a written scope that includes suction point count, pipe routing, fan specification, and post-mitigation testing.
How are these Louisville contractors ranked?
We rank contractors using a transparent, data-only methodology: Google rating first, review count second, and certification count third. Sponsored placements appear in a separate, clearly labeled section and do not influence organic ranking position. All ranking data comes from verified sources including Google Business profiles and national certification databases.
Should I get multiple quotes in Louisville?
Yes. With 21 contractors in Louisville, getting at least two written quotes is practical and recommended. Compare the number of suction points, fan model, pipe routing plan, warranty length, and whether post-mitigation testing is included. Price alone is not a reliable differentiator — system design matters more for long-term radon reduction.