CS
Christopher S Webb
VerifiedAnnapolis, MD
Testing
NRPP Certified RMP
Radon Pros in Maryland
32 contractorsEPA zone context: Western Maryland is Zone 1 with significant radon risk. The Baltimore metro area is Zone 2. The Eastern Shore is Zone 3.
DB
Dimitrios Bitsanis
VerifiedBel Air, MD
TestingCommercial
NRPP Certified RMP
AA
Full Service•Bethesda, MD
4.9 (49 Google reviews)
MitigationTestingCrawlspaceFan RepairCommercial
Licensed & Insured
Dedicated radon contractor in Bethesda, Maryland, providing radon mitigation, radon testing, crawlspace radon solutions, radon fan repair and replacement. Handles slab-on-grade, crawlspace foundations, uses sub-slab depressurization and HRV/ERV ventilation, and licensed and insured.
CO
Craig O Smith
VerifiedBoonsboro, MD
Testing
NRPP Certified RMP
KH
Katsiaryna Holder
VerifiedFull Service•Clarksburg, MD
MitigationTestingCrawlspaceFan RepairCommercial
NRPP Certified RMPLicensed & Insured
Based in Clarksburg, Maryland, this dedicated radon contractor provides radon mitigation, radon testing, crawlspace radon solutions, radon fan repair and replacement. Certified as NRPP Radon Measurement Professional by NRPP. Handles slab-on-grade, crawlspace foundations, uses sub-slab depressurization and HRV/ERV ventilation, and licensed and insured.
MG
Michael Gedz
VerifiedTesting Specialist•Elkton, MD
TestingNew ConstructionCommercial
NRPP Certified RMP
ME
Michael E. Walther
VerifiedEllicott City, MD
TestingCommercial
NRPP Certified RMS/RMP
BZ
Benjamins Zonis
VerifiedFinksburg, MD
4.6 (837 Google reviews)
TestingCommercial
NRPP Certified RMS/RMP
AR
Alexandra R. Stieff
VerifiedFrederick, MD
TestingCommercial
NRPP Certified RMP
BH
Benjamin Hu
VerifiedGaithersburg, MD
TestingCommercial
NRPP Certified RMP
CM
Carlos M. Avery
VerifiedGaithersburg, MD
TestingCommercial
NRPP Certified RMP
YL
Yerman Lara
VerifiedGaithersburg, MD
TestingCommercial
NRPP Certified RMP
EE
Edouard E Kreitmann
VerifiedGermantown, MD
TestingCrawlspaceCommercialVapor Barrier
NRPP Certified RMS
MJ
Marcel Jares
VerifiedTesting Specialist•Germantown, MD
TestingCommercial
NRPP Certified RMP
RM
Mitigation Specialist•Glenwood, MD
4.9 (86 Google reviews)
MitigationTesting
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 in Maryland
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Foundation Types & Radon
How basements, slabs, and crawlspaces affect radon entry and system design.
Radon in Real Estate
What buyers and sellers should expect during testing, mitigation, and closing.
Radon System Maintenance
Maintenance schedules, fan replacement, and keeping your mitigation system effective.