Residential Radon Testing
The testing process for radon is conducted using state of the art continuous radon monitors. These monitors take hourly air samples for a two day period. These levels are then averaged for the testing period. This average is calculated in a measurement called pico curies per liter. The results need to be under 4.0 in order to be considered a safe level.
In order to receive the most accurate test results, you need to be aware of the following Closed House Conditions:
- 12 hours prior to the test – Windows and doors need to be shut except for normal in and out. Central air conditioning and heating can be run as normal but window air conditioning units should be removed and windows closed. Closed house conditions should remain in effect for the duration of the testing period.
- During the test - Windows and doors need to be shut except for normal in and out. Central air conditioning and heating can be run as normal but window air conditioning units should be removed and windows closed. Closed house conditions should remain in effect for the duration of the testing period.
Other Things To Remember:
- Do not disturb the test device at any time during the test.
- If a radon mitigation system is present, make sure it is operating normally unless instructed by your radon professional.
- Do not operate a whole house fan during the testing period.
- Report any power outages to your radon professional.
By following the above protocols, you can ensure that your test results will be accurate.

