What is a Radon Test Monitor?
The radon test monitors displayed below are designed for home use, to measure the concentration of radon gas in indoor environments. They can be used to test your home to see if you have a high radon or to ensure your radon mitigation system is working properly.
Beware of cheap or off brand radon defectors sold online that often are far from accurate.
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Top Pick Radon Test Monitors for Homeowners
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Safety Siren Pro4 Radon Detector – Continuous Radon Gas Monitoring for Home, Features visual and audible warning alarms | Short & Long-Term Radon Detection | Made in USA (About $149)
Airthings 325 Corentium Home 2 Smart Digital Radon Detector - Portable and Easy-to-use Radon Testing with Bluetooth connectivity and Humidity & Temperature Sensors (About $149)
Airthings 2960 View Plus - Battery Powered Radon & Air Quality Monitor (PM, CO2, VOC, Humidity, Temp, Pressure) (About $279)
Ecosense RD200 RadonEye, Home Digital Radon Detector: Fast and Accurate Detection of Fluctuating Radon Levels, Short and Long Term Continuous Monitoring with Trend Charts
(About $169)
Ecosense EB100 EcoBlu, Home Radon Detector, Capture & Display Results Every 10 Minutes, Short & Long-Term Continuous Monitoring, Easy to Use (About $117)
Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L (About $144)
The Complete Homeowner Radon Testing Checklist
1. Pre-Testing & Device Selection
- Skip the online lookalikes: Avoid cheap, unbranded digital monitors with no testing pedigree.
- Verify certifications: Choose a short-term kit or continuous monitor certified by NRPP or NRSB.
- Confirm calibration: Ensure electronic monitors used for official tests carry active factory calibration certificates.
2. Closed-House Conditions (Crucial for Accuracy)
3. Proper Placement
- Choose the lowest livable level: Test the basement or the lowest floor used regularly by family.
- Maintain proper height: Elevate the test kit or monitor 2 to 7 feet off the floor (breathing zone).
- Avoid drafts and heat: Keep the device away from vents, fans, fireplaces, direct sunlight, and windows.
- Keep clear of moisture: Do not test in high-humidity areas like kitchens, bathrooms, or laundry rooms.
4. Post-Mitigation Maintenance
- Verify the installation: Ensure an EPA-evaluated monitor like the Safety Siren Pro Series 4 is plugged in near the system.
- Check the U-tube manometer: Inspect the liquid gauge on your mitigation pipe monthly to confirm the fan is drawing suction.
- Retest every two years: Perform a routine, certified follow-up test to ensure shifting soil or fan degradation hasn't compromised your safety.
- Keep clear of moisture: Do not test in high-humidity areas like kitchens, bathrooms, or laundry rooms.
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