Radon Testing

At A-1 Radon Testing Company, we specialize in professional radon testing in Denver, CO, and across the Front Range. Whether you're buying a home, selling your property, managing a commercial space, or simply want to ensure your indoor air is safe, we provide accurate, fast, and fully certified radon measurement services.

Radon is an invisible, odorless radioactive gas that’s been linked to serious health risks—including lung cancer. In Colorado, radon levels are among the highest in the country, and more than 50% of homes in the Denver metro area test above the EPA action level.



If you're located in Denver, Aurora, Lakewood, Littleton, Arvada, or surrounding communities, now is the time to protect your family, tenants, or employees with a comprehensive radon test from the trusted local experts.

Radon is a naturally occurring radioactive gas released from soil and rock as uranium breaks down underground. It enters homes through cracks in the foundation, sump pumps, floor joints, and even water supplies.

Why radon testing is especially important in the Denver area:

• Colorado is a Zone 1 state, which means it's at the highest risk for elevated radon levels.
  
• Many homes have basements or crawlspaces—ideal entry points for radon.
  
• Modern airtight construction can trap radon inside homes.
  
• Winter testing reveals the highest concentrations, making year-round testing essential.
  
  

The EPA recommends testing every two years and always testing before buying or selling a home. Our certified testing services provide the peace of mind that comes with reliable, lab-verified results.

At A-1 Radon Testing Company, we offer comprehensive radon measurement solutions using state-of-the-art testing equipment and industry-leading protocols. Our services are:

• Accurate – using continuous radon monitors (CRMs) or charcoal canisters as appropriate
  
• Affordable – competitive pricing with no hidden fees
  
• Convenient – fast turnaround, professional scheduling, and clear reports
  
• Certified – fully licensed and NEHA/NRPP certified
  
  

We serve:

• Homeowners & homebuyers
  
• Home sellers and real estate agents
  
• Rental property owners and landlords
  
• Commercial property managers
• Schools, daycares, and municipal buildings
  

Our process is simple, professional, and precise:

• Site Evaluation: We assess your property layout and recommend the best testing method based on your space and goals.
  
• Test Placement: We install certified radon testing devices (CRMs or passive devices) in the lowest livable area, per EPA guidelines.
  
• 48–96 Hour Testing Period: Devices collect radon concentration data over time—no need for invasive procedures or drilling.
  
• Lab Analysis or On-Site Readings: Depending on your chosen method, we either collect the device and ship it to a certified lab or provide immediate digital readings.
  
• Detailed Report: You receive a clear, easy-to-understand report with average radon levels, EPA action thresholds, and recommended next steps if mitigation is needed.
  

Schedule Your Radon Test in Denver, CO Today

Don't wait to find out whether your home or building is safe. Radon exposure is a silent risk—but one that’s entirely manageable with early detection. Schedule your professional radon test today and take control of your indoor air quality.