The Airthings View Plus represents the current state-of-the-art in home radon monitoring. This device goes beyond basic radon detection, measuring seven different air quality factors including radon, PM2.5 particulates, CO2, VOCs, temperature, humidity, and air pressure. The built-in WiFi allows continuous cloud sync, meaning you can check your home's radon levels from anywhere in the world.

What sets the View Plus apart is its smart home integration. It works seamlessly with Alexa and Google Assistant, letting you ask "What's my radon level?" and get an instant voice response. The device also integrates with IFTTT, allowing automated responses like triggering ventilation fans when radon levels spike. For homes in high-radon areas like Phoenix or Denver, this automation can provide peace of mind.

The View Plus provides radon readings in as little as 24 hours, with increasing accuracy over 7 days and long-term averaging over months. The large e-ink display is easy to read from across the room and shows color-coded indicators (green, yellow, red) so you can instantly assess your air quality status. The Airthings app provides detailed graphs, trends, and insights, plus the ability to export data for sharing with mitigation contractors or real estate transactions.

The Airthings Wave Plus offers most of the View Plus's capabilities at a lower price point. Like its more expensive sibling, it monitors radon, CO2, VOCs, temperature, humidity, and air pressure. The key difference is connectivity: the Wave Plus uses Bluetooth instead of WiFi, which means you need to be within range to sync data to your phone.

The Wave Plus features a unique wave-activated display. Simply wave your hand in front of the device, and the LED ring lights up with color-coded air quality indicators. Green means good air quality, yellow indicates moderate concerns, and red signals action needed. This gesture-controlled interface is intuitive and eliminates the need for buttons or touchscreens that can collect dust.

While the Bluetooth limitation means you can't check levels remotely, the device stores data locally and syncs when your phone is in range. For most homeowners who want to monitor their primary residence, this isn't a significant drawback. The battery life is excellent, lasting 18+ months on the included batteries. The Airthings app is identical to the View Plus version, providing detailed graphs, trends, and radon level history.

The RadonEye RD200 stands out for its remarkably fast detection capabilities. While most continuous monitors require 24-48 hours for initial readings, the RD200 provides actionable data in as little as one hour. This makes it particularly valuable for testing during real estate transactions, verifying mitigation system effectiveness immediately after installation, or quickly assessing radon levels when moving into a new home.

The device uses advanced pulsed ion chamber technology, the same method employed by professional radon measurement equipment. This gives it exceptional accuracy and sensitivity, especially for detecting short-term radon spikes. The always-on LCD display shows current radon levels, 24-hour average, monthly average, and peak reading. Many users appreciate having instant visibility without needing to pull out their phone.

The RadonEye app connects via Bluetooth and provides detailed historical data, graphs, and the ability to set custom radon alerts. One unique feature is the ability to export data in various formats for sharing with contractors, inspectors, or during home sale negotiations. The RD200 is popular among professional home inspectors for its reliability and quick turnaround.

The Airthings Corentium Home is the best-selling continuous radon monitor in North America, and for good reason. It delivers accurate, reliable radon detection without unnecessary features that drive up the price. This is the sweet spot for homeowners who want serious radon monitoring without smart home bells and whistles.

The Corentium Home displays three key metrics on its LCD screen: 24-hour average, 7-day average, and long-term average. This gives you both immediate awareness of current conditions and historical context to understand trends over time. The device operates completely standalone—no app, no WiFi, no Bluetooth. Just plug in three AAA batteries and place it in your basement or lowest living area. The batteries last approximately two years with normal use.

Despite its simplicity, the Corentium Home uses the same reliable detection technology as Airthings' more expensive models. It's been independently tested and validated against EPA protocols, making it suitable for official radon testing in many jurisdictions. The device is portable enough to move between rooms, allowing you to test different areas of your home over time. Many homeowners use it to verify that their mitigation system is working effectively throughout the year.

The SAF Aranet Radon Detector brings continuous radon monitoring to an accessible price point. At around $150, it's the most affordable option on this list while still providing reliable long-term radon detection. This monitor is best suited for homeowners who want basic continuous monitoring on a tight budget.

The device features a simple LCD display showing current radon levels, 24-hour average, and long-term average. Setup is straightforward—insert the included batteries, place the monitor in your basement or lowest level, and readings begin appearing within 48 hours. The detection accuracy improves over the first week as the device calibrates to your specific environment.

While the SAF Aranet Radon Detector lacks the advanced features of premium devices, it performs its core function reliably. The readings have been validated against professional-grade equipment, and many users report consistent performance over multiple years. The battery life is solid at 12-18 months depending on usage. For homeowners in moderate radon areas who want peace of mind without spending $200+, this provides adequate monitoring capability.