
Best Radon Monitors for Multi-Floor Homes: 4 Picks
A comparison of four radon monitors for multi-floor homes, focused on continuous logging, per-floor placement, and the limits of short-term readings.
Read Guide→CO₂ monitors, PM2.5, VOCs, indoor air quality and more.


A comparison of four radon monitors for multi-floor homes, focused on continuous logging, per-floor placement, and the limits of short-term readings.
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Four radon monitors compared for real estate inspections, with the certification, timing and record-keeping facts each listing actually publishes.
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Nine continuous radon monitors compared on reading interval, connectivity, stated range and logging, from plug-in Wi-Fi units to portable meters.
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Continuous electronic monitor or laboratory detector; short-term and long-term averages; placement on the lowest lived-in floor.
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The original battery-powered digital radon detector: short-term and long-term averages on an LCD, three AAA batteries, no app and no account.
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A Wi-Fi radon monitor with humidity and temperature, an e-ink display, battery or USB power, and a hub function for other Airthings devices.
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Radon, CO₂, VOCs, humidity, temperature and pressure on two AA batteries with Bluetooth and a wave-to-check colour indicator.
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The updated Corentium Home adds Bluetooth, temperature and humidity to the original battery-powered radon detector.
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A battery-powered radon monitor with a 10-minute reading cycle, e-ink display, and temperature, humidity and pressure sensors.
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The 24-hour number tells you what is happening now. The 90-day number tells you your risk.
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A radioactive gas from the ground, the second leading cause of lung cancer, and invisible to every sense.
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