Anyone hoping to check their home’s radon level can now pick from dozens of different radon monitors sold online or in stores — but experts warn many of those devices don’t actually work. Those kinds of “scam” devices pose a public health risk since they don’t show a building’s actual radon level, Warkentin added. Some communities provide free radon monitors through libraries or local public health units, but typically, homeowners end up paying out of pocket for their own devices. "So they're giving you a number, but it's not based on ... what the radon level in the home [actually] is." Find an approved monitorAt Health Canada’s radon lab in Ottawa, a team of scientists conducts tests on home radon monitors to see how well they perform within regular household conditions.

Source: CBC News March 20, 2026 21:44 UTC