Radon Testing & Mitigation in Colorado
Browse 116+ verified radon testing and mitigation professionals serving Colorado.
116 Radon Testing & Mitigation Providers in Colorado
#1 Radon Inc
#1 Radon Inc is a establishment provider serving Arapahoe County, Colorado with a Google rating of 4.8 based on 44 reviews.
360i Certified Home Inspections
360i Certified Home Inspections is a establishment provider serving Pueblo County, Colorado with a Google rating of 4.9 based on 155 reviews.
5280 Radon Mitigation
5280 Radon Mitigation is a establishment provider serving Denver County, Colorado with a Google rating of 4.9 based on 286 reviews.
A Neeley Home Inspection Services
A Neeley Home Inspection Services is a establishment provider serving Larimer County, Colorado with a Google rating of 5.0 based on 156 reviews.
A&A Radon
A&A Radon is a establishment provider serving Larimer County, Colorado with a Google rating of 4.5 based on 16 reviews.
Aames Radon
Aames Radon is a establishment provider serving Arapahoe County, Colorado with a Google rating of 4.9 based on 31 reviews.
Absolute Radon
Absolute Radon is a establishment provider serving Jefferson County, Colorado with a Google rating of 5.0 based on 39 reviews.
Absolute Radon Safety
Absolute Radon Safety is a establishment provider serving Denver County, Colorado with a Google rating of 4.9 based on 461 reviews.
Advanced Radon Mitigation Incorporated
Advanced Radon Mitigation Incorporated is a electrician provider serving Jefferson County, Colorado with a Google rating of 5.0 based on 4 reviews.
Affordable Radon Services LLC
Affordable Radon Services LLC is a establishment provider serving El Paso County, Colorado with a Google rating of 4.9 based on 148 reviews.
Affordable Radon Services LLC
Affordable Radon Services LLC is a establishment provider serving El Paso County, Colorado with a Google rating of 4.9 based on 655 reviews.
Affordable Radon Services LLC
Affordable Radon Services LLC is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 21 reviews.
AirRadon
AirRadon is a establishment provider serving Jefferson County, Colorado with a Google rating of 4.0 based on 4 reviews.
All Colorado Radon Mitigation - Colorado Springs
All Colorado Radon Mitigation - Colorado Springs is a establishment provider serving El Paso County, Colorado with a Google rating of 5.0 based on 1 reviews.
All Colorado Radon Mitigation - North Colorado
All Colorado Radon Mitigation - North Colorado is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 2 reviews.
All Colorado Radon Mitigation, Inc.
All Colorado Radon Mitigation, Inc. is a establishment provider serving El Paso County, Colorado with a Google rating of 4.9 based on 279 reviews.
All Phase Radon LLC
All Phase Radon LLC is a establishment provider serving Jefferson County, Colorado with a Google rating of 5.0 based on 10 reviews.
All Season Radon Mitigation LLC
All Season Radon Mitigation LLC is a establishment provider serving El Paso County, Colorado with a Google rating of 5.0 based on 8 reviews.
All-Phase Environmental Inc
All-Phase Environmental Inc is a establishment provider serving Pueblo County, Colorado with a Google rating of 4.6 based on 10 reviews.
Alpine Building Performance, LLC
Alpine Building Performance, LLC is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 685 reviews.
American Radon Mitigation
American Radon Mitigation is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 91 reviews.
American Radon Mitigation
American Radon Mitigation is a establishment provider serving Boulder County, Colorado with a Google rating of 4.9 based on 35 reviews.
APEX Radon
APEX Radon is a establishment provider serving Denver County, Colorado with a Google rating of 4.9 based on 543 reviews.
Aspen Radon
Aspen Radon is a establishment provider serving El Paso County, Colorado with a Google rating of 5.0 based on 161 reviews.
Aspen Ridge Inspection Services LLC
Aspen Ridge Inspection Services LLC is a establishment provider serving Douglas County, Colorado with a Google rating of 5.0 based on 475 reviews.
Axium Home Inspections
Axium Home Inspections is a establishment provider serving Denver County, Colorado with a Google rating of 4.9 based on 4086 reviews.
Axium Radon Mitigations
Axium Radon Mitigations is a establishment provider serving Denver County, Colorado with a Google rating of 4.8 based on 195 reviews.
Be Squared Home Inspection LLC
Be Squared Home Inspection LLC is a establishment provider serving Larimer County, Colorado with a Google rating of 4.9 based on 50 reviews.
Bear Creek Radon
Bear Creek Radon is a establishment provider serving Arapahoe County, Colorado with a Google rating of 5.0 based on 29 reviews.
Big Canyon Home Inspections
Big Canyon Home Inspections is a establishment provider serving Larimer County, Colorado with a Google rating of 4.9 based on 181 reviews.
Boulder Radon Ltd.
Boulder Radon Ltd. is a establishment provider serving Jefferson County, Colorado with a Google rating of 5.0 based on 12 reviews.
Breathe Pure Solutions
Breathe Pure Solutions is a establishment provider serving Larimer County, Colorado with a Google rating of 5.0 based on 138 reviews.
BreatheCleanColorado
BreatheCleanColorado is a establishment provider serving Larimer County, Colorado with a Google rating of 5.0 based on 63 reviews.
Centennial Radon Solutions
Centennial Radon Solutions is a establishment provider serving El Paso County, Colorado with a Google rating of 5.0 based on 1 reviews.
Colorado Radon Company
Colorado Radon Company is a establishment provider serving Denver County, Colorado with a Google rating of 4.9 based on 115 reviews.
Colorado Radon Mitigation
Colorado Radon Mitigation is a establishment provider serving El Paso County, Colorado with a Google rating of 4.9 based on 184 reviews.
Colorado Radon Services
Colorado Radon Services is a establishment provider serving Jefferson County, Colorado with a Google rating of 4.5 based on 8 reviews.
Colorado Radon Solutions
Colorado Radon Solutions is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 55 reviews.
Colorado Radon Specialist
Colorado Radon Specialist is a establishment provider serving El Paso County, Colorado with a Google rating of 4.8 based on 16 reviews.
ColoRadon
ColoRadon is a establishment provider serving Larimer County, Colorado with a Google rating of 5.0 based on 33 reviews.
Denver Radon and Sewer
Denver Radon and Sewer is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 1 reviews.
Denver Radon Testing
Denver Radon Testing is a establishment provider serving Denver County, Colorado with a Google rating of 4.9 based on 15 reviews.
Drennen Custom Contracting (Radon and Roofing)
Drennen Custom Contracting (Radon and Roofing) is a establishment provider serving Larimer County, Colorado with a Google rating of 5.0 based on 362 reviews.
Eco Handyman
Eco Handyman is a establishment provider serving Boulder County, Colorado with a Google rating of 4.8 based on 92 reviews.
EcoTreck Environmental
EcoTreck Environmental is a establishment provider serving Boulder County, Colorado with a Google rating of 4.4 based on 67 reviews.
El Paso County Public Health
El Paso County Public Health is a establishment provider serving El Paso County, Colorado with a Google rating of 2.6 based on 68 reviews.
Elevation Radon Control
Elevation Radon Control is a establishment provider serving Douglas County, Colorado with a Google rating of 5.0 based on 21 reviews.
Elevation Radon Control
Elevation Radon Control is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 23 reviews.
EnvioCore | Environmental Testing
EnvioCore | Environmental Testing is a establishment provider serving Denver County, Colorado with a Google rating of 4.9 based on 92 reviews.
Evergreen Radon
Evergreen Radon is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 44 reviews.
Evergreen Radon and Construction Services
Evergreen Radon and Construction Services is a establishment provider serving Larimer County, Colorado with a Google rating of 4.9 based on 218 reviews.
ExperTech Environmental
ExperTech Environmental is a establishment provider serving El Paso County, Colorado with a Google rating of 4.9 based on 143 reviews.
ExperTech Environmental
ExperTech Environmental is a establishment provider serving El Paso County, Colorado with a Google rating of 5.0 based on 95 reviews.
ExperTech Environmental
ExperTech Environmental is a establishment provider serving Pueblo County, Colorado with a Google rating of 1.0 based on 1 reviews.
Foothills Specialties LLC
Foothills Specialties LLC is a establishment provider serving Larimer County, Colorado with a Google rating of 4.9 based on 28 reviews.
Front Porch Inspections
Front Porch Inspections is a establishment provider serving Larimer County, Colorado with a Google rating of 4.9 based on 335 reviews.
FULLERBUILT RADON MITIGATION LLC
FULLERBUILT RADON MITIGATION LLC is a establishment provider serving Douglas County, Colorado with a Google rating of 5.0 based on 5 reviews.
GreenWorks Inspections & Engineering - Denver CO
GreenWorks Inspections & Engineering - Denver CO is a establishment provider serving Denver County, Colorado with a Google rating of 4.9 based on 438 reviews.
Ground Floor Home Inspection Inc
Ground Floor Home Inspection Inc is a establishment provider serving El Paso County, Colorado with a Google rating of 4.9 based on 511 reviews.
Habitat Radon Control
Habitat Radon Control is a establishment provider serving Boulder County, Colorado with a Google rating of 5.0 based on 10 reviews.
HDMK Inspection Services - Colorado
HDMK Inspection Services - Colorado is a establishment provider serving Pueblo County, Colorado with a Google rating of 5.0 based on 703 reviews.
Healthy Homes Radon Solutions, LLC
Healthy Homes Radon Solutions, LLC is a establishment provider serving Arapahoe County, Colorado with a Google rating of 5.0 based on 8 reviews.
Inspections by Referral
Inspections by Referral is a establishment provider serving Larimer County, Colorado with a Google rating of 5.0 based on 123 reviews.
Jefferson County Public Health
Jefferson County Public Health is a establishment provider serving Jefferson County, Colorado with a Google rating of 2.6 based on 80 reviews.
Key Inspection Services
Key Inspection Services is a establishment provider serving El Paso County, Colorado with a Google rating of 5.0 based on 451 reviews.
Lords Radon
Lords Radon is a establishment provider serving Jefferson County, Colorado with a Google rating of 4.8 based on 48 reviews.
LTS Resource
LTS Resource is a establishment provider serving Pueblo County, Colorado with a Google rating of 4.8 based on 26 reviews.
M.A.R.S. Environmental (Formerly Certified IAQ Professionals)
M.A.R.S. Environmental (Formerly Certified IAQ Professionals) is a establishment provider serving Jefferson County, Colorado with a Google rating of 4.9 based on 90 reviews.
Martens Radon
Martens Radon is a establishment provider serving Jefferson County, Colorado with a Google rating of 5.0 based on 22 reviews.
Maverick Home Inspection
Maverick Home Inspection is a establishment provider serving El Paso County, Colorado with a Google rating of 5.0 based on 1 reviews.
Metro Radon Co.
Metro Radon Co. is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 12 reviews.
Midd CO Home Inspections
Midd CO Home Inspections is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 177 reviews.
Navigations Home Inspection, LLC
Navigations Home Inspection, LLC is a establishment provider serving Larimer County, Colorado with a Google rating of 5.0 based on 70 reviews.
NextStep Inspections, LLC
NextStep Inspections, LLC is a establishment provider serving Jefferson County, Colorado with a Google rating of 5.0 based on 138 reviews.
Northern Colorado Radon
Northern Colorado Radon is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 57 reviews.
Pandion Property Inspections, LLC
Pandion Property Inspections, LLC is a establishment provider serving Larimer County, Colorado with a Google rating of 4.9 based on 16 reviews.
PDS Radon Supply
PDS Radon Supply is a establishment provider serving El Paso County, Colorado with a Google rating of 5.0 based on 28 reviews.
Peak Radon
Peak Radon is a establishment provider serving El Paso County, Colorado with a Google rating of 5.0 based on 20 reviews.
Pikes Peak Radon
Pikes Peak Radon is a establishment provider serving El Paso County, Colorado with a Google rating of 5.0 based on 14 reviews.
Pillar To Post Home Inspectors
Pillar To Post Home Inspectors is a establishment provider serving Pueblo County, Colorado with a Google rating of 4.7 based on 37 reviews.
Pillar to Post Home Inspectors - The Walsh Kastberg Team
Pillar to Post Home Inspectors - The Walsh Kastberg Team is a establishment provider serving Jefferson County, Colorado with a Google rating of 4.9 based on 556 reviews.
PineBreeze Radon
PineBreeze Radon is a establishment provider serving El Paso County, Colorado with a Google rating of 4.6 based on 28 reviews.
PowerHouse Home Performance
PowerHouse Home Performance is a establishment provider serving Larimer County, Colorado with a Google rating of 5.0 based on 7 reviews.
ProCheck Inspection Services
ProCheck Inspection Services is a establishment provider serving Larimer County, Colorado with a Google rating of 5.0 based on 280 reviews.
Professional Advantage Radon
Professional Advantage Radon is a establishment provider serving Arapahoe County, Colorado with a Google rating of 5.0 based on 12 reviews.
Protect Environmental
Protect Environmental is a establishment provider serving Denver County, Colorado with a Google rating of 4.7 based on 165 reviews.
Pueblo Department of Public Health and Environment
Pueblo Department of Public Health and Environment is a establishment provider serving Pueblo County, Colorado with a Google rating of 2.6 based on 43 reviews.
Quality Home Inspections, LLC
Quality Home Inspections, LLC is a establishment provider serving Larimer County, Colorado with a Google rating of 5.0 based on 91 reviews.
Radon Engineering Consultants East, Inc
Radon Engineering Consultants East, Inc is a establishment provider serving Arapahoe County, Colorado with a Google rating of 4.2 based on 15 reviews.
Radon Gone
Radon Gone is a establishment provider serving Arapahoe County, Colorado with a Google rating of 5.0 based on 23 reviews.
Radon Gone - Residential & Commercial Mitigation
Radon Gone - Residential & Commercial Mitigation is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 5 reviews.
Radon Gone Mitigation
Radon Gone Mitigation is a establishment provider serving Denver County, Colorado with a Google rating of 4.8 based on 106 reviews.
Radon Home Measurement and Mitigation
Radon Home Measurement and Mitigation is a establishment provider serving Jefferson County, Colorado with a Google rating of 4.6 based on 38 reviews.
Radon Mitigation of the Rockies
Radon Mitigation of the Rockies is a establishment provider serving Denver County, Colorado with a Google rating of 3.0 based on 1 reviews.
Radon Mitigation of the Rockies Aurora
Radon Mitigation of the Rockies Aurora is a establishment provider serving El Paso County, Colorado with a Google rating of 4.9 based on 232 reviews.
Radon Rangers
Radon Rangers is a establishment provider serving El Paso County, Colorado with a Google rating of 4.5 based on 4 reviews.
Radon Safety LLC
Radon Safety LLC is a establishment provider serving El Paso County, Colorado with a Google rating of 4.9 based on 670 reviews.
Radon Services of Colorado
Radon Services of Colorado is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 20 reviews.
Radon Solutions, LLC
Radon Solutions, LLC is a establishment provider serving Pueblo County, Colorado with a Google rating of 4.8 based on 33 reviews.
Rapid Radon Relief
Rapid Radon Relief is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 310 reviews.
RDS Environmental
RDS Environmental is a establishment provider serving El Paso County, Colorado with a Google rating of 5.0 based on 145 reviews.
Reliable Solutions Home Inspections LLC
Reliable Solutions Home Inspections LLC is a establishment provider serving Larimer County, Colorado with a Google rating of 5.0 based on 336 reviews.
Reliant Radon Solutions
Reliant Radon Solutions is a establishment provider serving Denver County, Colorado with a Google rating of 4.9 based on 81 reviews.
Reveal360 Inspection Services, LLC
Reveal360 Inspection Services, LLC is a establishment provider serving Larimer County, Colorado with a Google rating of 5.0 based on 573 reviews.
Rocky Mountain Radon Mitigation
Rocky Mountain Radon Mitigation is a establishment provider serving El Paso County, Colorado with a Google rating of 5.0 based on 273 reviews.
Rocky Mountain Radon Mitigation
Rocky Mountain Radon Mitigation is a establishment provider serving Larimer County, Colorado with a Google rating of 5.0 based on 22 reviews.
Rocky Mountain Radon United, LLC
Rocky Mountain Radon United, LLC is a establishment provider serving Arapahoe County, Colorado with a Google rating of 5.0 based on 8 reviews.
Safe Investment Home Inspections, LLC
Safe Investment Home Inspections, LLC is a establishment provider serving Jefferson County, Colorado with a Google rating of 4.9 based on 547 reviews.
Savage Home Inspections LLC
Savage Home Inspections LLC is a establishment provider serving El Paso County, Colorado with a Google rating of 4.9 based on 105 reviews.
Southwest Radon Eliminators LLC
Southwest Radon Eliminators LLC is a establishment provider serving Pueblo County, Colorado with a Google rating of 4.7 based on 12 reviews.
Stanton Radon
Stanton Radon is a establishment provider serving Pueblo County, Colorado with a Google rating of 4.5 based on 4 reviews.
Sure Inspections
Sure Inspections is a establishment provider serving Pueblo County, Colorado with a Google rating of 4.9 based on 187 reviews.
SWAT Radon Mitigation
SWAT Radon Mitigation is a establishment provider serving El Paso County, Colorado with a Google rating of 4.8 based on 178 reviews.
The Radon Guy LLC
The Radon Guy LLC is a establishment provider serving Denver County, Colorado with a Google rating of 5.0 based on 86 reviews.
The Radon Guys LLC
The Radon Guys LLC is a establishment provider serving Denver County, Colorado.
Webb's Radon Service
Webb's Radon Service is a establishment provider serving El Paso County, Colorado with a Google rating of 5.0 based on 10 reviews.
About Radon Testing & Mitigation in Colorado
Radon testing is the measurement of radon gas levels inside a home or building. Radon is a naturally occurring radioactive gas that forms from the decay of uranium in soil and rock. It seeps into homes through foundation cracks and openings, and is the second leading cause of lung cancer in the United States after smoking. The EPA recommends testing every home, as radon has no odor, color, or taste — the only way to know your risk level is to test.
Warning Signs to Watch For
- !Your home has never been tested for radon (testing is the only way to detect it)
- !You live in a high-radon geographic area (check EPA's radon zone map)
- !Your home has a basement, slab foundation, or crawl space
- !You've recently added living space in a basement or lower level
- !A neighbor's home tested at elevated radon levels (levels vary house-to-house)
- !You are buying or selling a home — radon testing is increasingly standard in real estate
What to Expect
A certified professional places an approved radon detector (short-term or long-term) in the lowest livable area of your home. Closed-house conditions must be maintained for 12 hours before and during testing for accurate results.
After the exposure period (48 hours for short-term; 90+ days for long-term), the test device is sent to an accredited lab for analysis. Results are reported in picocuries per liter (pCi/L).
If results are at or above 4.0 pCi/L (the EPA action level), radon mitigation is recommended. Levels between 2–4 pCi/L warrant follow-up testing. A mitigation system can reduce levels by up to 99% in most homes.
How to Choose a Radon Testing & Mitigation Provider in Colorado
State Certification or NRPP/NRSB Credentials
Many states require radon testers and mitigators to be licensed. Look for certification from the National Radon Proficiency Program (NRPP) or National Radon Safety Board (NRSB), the two nationally recognized credentialing bodies.
Use of Approved Test Devices
Ensure the contractor uses EPA-approved test devices and follows EPA's measurement protocols (either EPA 402-R-92-004 or ASTM standard E2121). Improper testing can yield unreliable results.
Independence of Testing from Mitigation
For maximum objectivity, consider having testing and mitigation performed by separate companies. If using one company for both, confirm they use EPA-recognized protocols and third-party lab analysis.
Written Warranty on Mitigation Systems
A quality mitigation contractor should provide a written guarantee that post-mitigation levels will fall below 4.0 pCi/L, and ideally below 2.0 pCi/L. Ask about the system warranty, typically covering 5–25 years.
Radon Testing & Mitigation FAQs
What is a safe radon level?
The EPA recommends taking action if indoor radon levels are at or above 4 pCi/L. Levels between 2–4 pCi/L are considered elevated and warrant follow-up testing or mitigation. No level of radon exposure is completely risk-free, but mitigation can reduce levels to below 2 pCi/L in most homes.
How much does radon testing cost?
Professional radon testing typically costs $100–$300 for a short-term test. Long-term testing (90+ days) may cost $150–$350. DIY test kits are available for $15–$30, but professional testing with certified equipment and lab analysis provides more reliable results, especially for real estate transactions.
How long does radon mitigation take?
Sub-slab depressurization — the most common mitigation method — is typically installed in 3–5 hours. The system consists of a PVC pipe running from beneath the slab to the exterior, with a fan creating negative pressure to vent radon before it enters the home.
Does radon affect only basements?
Radon enters through the lowest level of a home in contact with soil — basement, slab, or crawl space. However, it can migrate to upper floors. Testing should always be conducted in the lowest livable area, but levels should be considered for the whole home.
Will a radon mitigation system increase my electric bill?
A standard radon fan uses 20–90 watts — comparable to a light bulb. The annual electricity cost is typically $30–$100. Given the lung cancer risk reduction, this is one of the most cost-effective home health investments available.