Technical Authority
Radon Testing Guide: The Science of Safety
Learn the 2023 ANSI/AARST protocols for accurate measurement and how to interpret your professional 48-hour digital report.
East Tennessee Radon Science
Because the Tennessee Valley sits on uranium-rich shale, radon levels here are among the highest in the country. This Radon Testing Guide ensures your measurement is scientifically valid and compliant with national safety standards.
Professional testing detects the Stack Effect—where home heating systems create a vacuum that pulls radioactive soil gas into your living space. Digital Continuous Radon Monitors (CRM) track these variables in real-time to guarantee accuracy.
NRPP Certification
In EPA Zone 1 (Anderson, Knox, Blount), measurement must follow strict legal protocols. Our NRPP-certified testing is required for all real estate transactions and health-safety verifications.
2023 ANSI/AARST Protocol Guide
Strict compliance with these six protocols is mandatory to ensure a scientifically accurate and legally defensible result.
Closed-House Conditions
All exterior windows and doors must remain closed 12 hours prior to the test and throughout the 48-hour duration.
Strategic Placement
Monitors are placed in the lowest occupied level, specifically away from vents, kitchens, or areas of high humidity.
Climate Stability
Building temperatures must be maintained between 65°F and 85°F to prevent pressure-driven radon spikes.
Normal Occupancy
Mechanical ventilation (HVAC) should operate as it normally would under typical living or occupancy conditions.
Integrity Controls
Do not intentionally increase ventilation. Internal doors should remain closed to prevent artificial cross-drafts.
Digital Analysis
Our CRM monitors track hourly fluctuations and barometric pressure to verify that all protocols were followed.
Radon Testing FAQs
Can I stay in my home during the 48-hour test?
Yes. You can enter and exit the home normally, but exterior doors should not be left open for more than a minute. "Closed-house conditions" must be maintained for the results to be valid.
What happens if my radon level is high?
If your average result is 4.0 pCi/L or higher, the EPA recommends installing a radon mitigation system. Rn86 Solutions provides a detailed list of certified mitigation professionals in East Tennessee.
How often should I test for radon in Knoxville?
The Tennessee Department of Environment and Conservation (TDEC) recommends testing every two years, or after any significant structural changes or HVAC renovations to your home.
Ready to Move Forward?
Select the testing service that fits your specific needs below or call our Oak Ridge office for immediate assistance.