- All external doors should be closed, except for normal entry and exit.
- All windows should be closed.
- Internal-external air exchange systems should be off. Examples include: high-volume attic fans, whole house fans, and window fans. Exceptions to this rule are air-to air heat exchangers, air conditioning systems that recycle indoor air, and furnaces.
- Ceiling fans, portable dehumidifier and air filters should not be used within 20 feet of the monitor.
- Fireplaces should not be used during the test period and the flu damper should be kept closed, unless they are a primary heat source.
- Dryers, range hoods and bathroom exhaust fans can be used in moderation.
- If your home has a radon mitigation system, the system shall be running for at least 24 hours prior and continuously during the testing period.
- If home is unoccupied, heating or air conditioning system must be set between 67-77F with fan in AUTO mode.
Radon levels fluctuate naturally. An initial test might not be an accurate assessment of a home’s average radon level. Transient weather can affect short-term measurements. Therefore, a high result (over 4 pCi/l) justifies repeating the test before undertaking more expensive abatement projects.
We utilize Femto-Tech 510 and Sun Nuclear 1027 continuous radon monitors. These radon measurement monitors provide quick and accurate measurements. The Femto-Tech 510 is a precise airborne alpha radiation detection instrument based on “Pulsed Ion Chamber” technology. Ions created form alpha radiation are detected by an electrometer and measured accordingly. The Femto-Tech also measures correlative temperature, Rh, and barometric pressure to give a more advanced view of the environmental variables that often impact radon levels. The Sun Nuclear 1027 uses a “Solid State Silicon Detector” to accurately detect radon levels. Alpha particles from radon and its decay products impact a silicon chip which provides an electric pulse that is plotted and averaged over the duration of the radon measurement test.
If our tests determine a high level of radon, we will discuss the options best fit for your situation and proceed accordingly. Visit our Radon Mitigation page to learn more about our process.
