The Best Radon Detectors for Your Home

Pros

• Starts delivering radon readings within 10 minutes of setup, with no complicated configuration needed.
• Also displays temperature and relative humidity on screen, and the temperature readings match household thermostats.
• Compact enough to set on a shelf and move room to room for testing different areas of the house.
• Battery life is excellent, running on two included AA batteries.
• The companion app shows historical graphs and stored data over time, which is useful for spotting trends in radon fluctuation.

Cons

• Bluetooth range for the app connection is limited, so you need to be relatively close to the device to sync.
• Short-term readings can fluctuate more than expected; one person found noticeably higher swings compared to other detectors sitting side by side.

Pros

• Setup is quick, and the companion app is polished and easy to navigate.
• Bluetooth connectivity lets you check readings from your phone without walking to the device.
• Displays rolling averages over 24 hours, 7 days, 30 days, and long-term, so you can track trends over time.
• Temperature and humidity sensors are built in alongside the radon detector.
• Readings respond noticeably to real-world changes like opening windows, which helps validate accuracy.

Cons

• Only connects via Bluetooth, not Wi-Fi, so you can't check readings when you're away from home.
• Takes a full 24 hours to produce its first reading and requires recalibration when moved to a new location.
• A few people found their unit's readings significantly different from other radon or humidity monitors, raising accuracy concerns.