Airthings Corentium Home Radon Detector — Read Radon Levels in 24 Hours! $142.99 CAD (21% Off)

Radon is a colorless, odorless radioactive gas and the second-leading cause of lung cancer. In Canada, many basements and ground floors carry elevated levels — and the problem is you can't know without measuring.

The Airthings Corentium Home is the first battery-operated digital radon detector. It runs on 3 AAA batteries, no outlet needed, so you can move it between the bedroom, basement, living room and study. Right now it's $142.99 CAD, down from $179.99 (21% off).

It uses alpha spectrometry — the same technology found in commercial detectors — and gives you your first reading within 24 hours, no mailing samples to a lab for weeks. The LCD shows 1-day, 7-day and up to one year of history, which matters because radon levels fluctuate daily; the long-term average is what counts.

At 148 g it's small enough to sit anywhere. You can generate a self-inspection report with one tap — handy for home inspections or checking whether a radon mitigation system is actually working. In normal home use it needs no annual calibration and is rated to last over 10 years.

If you live in a basement or in a granite-geology area (common across Ontario), this beats a one-time test kit — buy once, monitor for a decade. 4.6 stars from nearly 3,000 ratings, ranked #2 in smoke detectors on Amazon.

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