How is it measured?
There are two groups of devices which are most commonly used to test your home for radon:
Active Devices and Passive Devices
Active Testing
When you hire At Home Radon, your test will be conducted using a continuous radon monitor which is calibrated by the manufacturer for accuracy. The main benefit of having your home tested using a continuous radon monitor is that we are able to see radon levels for each hour the testing unit is in your home and determine your radon levels on site. An overall average is calculated as your average indoor radon level. At Home Radon is also licensed to give recommendations for lowering your radon level through mitigation.
Passive Testing
The passive device group includes alpha track detectors, charcoal canisters, charcoal liquid scintillation detectors, and electret ion chambers. When choosing the short-term test, the EPA recommends that two tests taken at the same time (simultaneous). This significantly improves the precision of this radon test. One test followed by another test (sequential) would most likely give a better representation of the seasonal average.
Both active and passive devices may have features which help to prevent test interference. At Home Radon can help you decide which option is best.
At Home Radon is licensed to use both active and passive testing devices.