Consumers looking to assess their residence’s radon levels now have a wide selection of radon monitors available online and in retail outlets. However, experts caution that many of these monitors may be ineffective.
Pam Warkentin, the executive director of the Canadian Association of Radon Scientists and Technologists (CARST), highlighted that numerous Canadians unknowingly purchase unreliable monitors that lack approval or certification. Warkentin advised against making decisions based on these detectors and encouraged individuals to acquire alternative options.
Investing in substandard monitors can be costly and time-consuming. Electronic monitors, which can cost hundreds of dollars each, necessitate testing for a minimum of three months. Warkentin shared an anecdote of a homeowner who purchased monitors for himself and his family, only to discover later that the devices had been recalled after several months of usage.
These inaccurate devices pose a significant public health threat by providing misleading readings that do not reflect the actual radon levels in a building. This misinformation may deter homeowners from taking necessary measures to mitigate the risks associated with radon, a radioactive gas that can lead to lung cancer with prolonged exposure.
According to research, millions of Canadian households likely have elevated radon levels, with radon-induced lung cancer claiming an estimated 3,200 lives annually.
“Many individuals may test and receive a low reading without questioning the device’s accuracy,” warned Warkentin.
So, how can homeowners effectively test for radon in their homes and which monitors should they avoid?
Radon gas is invisible, toxic and millions of Canadians have no idea it’s hiding in their homes. For The National, CBC’s Lauren Pelley breaks down the health risks and what you can do to keep your home safe.
Conducting Radon Testing
Health Canada recommends testing residences for radon over a period of three months or more, preferably in the winter when homes are sealed, potentially yielding higher radon readings.
Warkentin emphasized the unpredictability of radon levels, urging everyone to conduct testing to ensure safety.


