Airthings Corentium Home Radon Detector — Battery-Powered, Readings in 24H! $144.99 CAD (19% Off)

Radon is a bigger deal in Canada than most people realize—it's the second-leading cause of lung cancer after smoking, and it's invisible and odourless. Plenty of homes have elevated levels in the basement or ground floor without the owners ever knowing. Health Canada recommends long-term monitoring because radon levels swing day to day, and a single spot check doesn't tell you much.

The Airthings Corentium is the first battery-powered digital radon detector. Three AAA batteries keep it running—no outlet, no mailing a kit back to a lab. You get your first reading on the LCD within 24 hours, and it tracks daily, weekly, and up to a year of history.

Inside it uses alpha spectrometry—the same tech found in commercial detectors—so it adapts to its environment and filters out interference from temperature and humidity. It's also handy for property inspections or verifying a radon mitigation system is actually working.

Right now it's $144.99 CAD, down from $179.99 (19% off). It's the #1 best-seller in both Gas Detectors and Smoke Detectors & Fire Alarms, sitting at 4.6 stars from nearly 3,000 reviews. A price drop like this doesn't come around often.

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