From The EPA’s Homebuyers Guide to Radon Testing

The most common types of radon testing devices are listed below. As new testing devices are developed, you may want to check with your state radon office before you test to get the most up-to-date information.

Passive Devices

Passive radon testing devices do not need the power to function. These include charcoal canisters, alpha-track detectors, charcoal liquid scintillation devices, and electret ion chamber detectors in hardware, drug, and other stores. They can also be ordered by mail or phone.

These devices are exposed to the air in the home for a specified period of time, then sent to a laboratory for analysis. Both short-term and long-term passive devices are generally inexpensive. Some of these devices may have features that offer more resistance to test interference or disturbance than other passive devices. Qualified radon testers may use any of these devices to measure the home’s radon level.

Active Devices

Active radon testing devices require power to function. These include continuous radon monitors and continuous working level monitors. They continuously measure and record the amount of radon or its decay products in the air.

Many of these devices provide a report of this information which can reveal any unusual or abnormal swings in the radon level during the test period. A qualified tester can explain this report to you. Also, some of these devices are specifically designed to deter and detect test interference.

Some technically advanced active devices offer anti-interference features. Although these tests may cost more, they may ensure a more reliable result. Perkins Home Services, LLC almost exclusively uses an active device, a continuous radon monitor, to measure radon in your home, providing you with the most reliable radon test result.

We also provide that result to you sooner. As soon as the test is done, we can read the result. No waiting is required.

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