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Recommended by Bill

Radon detectors for your home

A detector you buy once and keep. It shows your radon now, and it keeps showing you after the season changes, after a remodel, and after a system goes in.

Save 10% with code ARS10-10OFF

The four we recommend

All four measure radon. The difference is the extra sensors and how you want to read them — from the most features to the simplest screen. Any of them will tell you what you need to know.

Save 10%: enter ARS10-10OFF at Airthings checkout.

  1. Airthings View Plus air quality monitor on a wooden table
    1

    View Plus

    Wi-Fi

    For radon and more of your indoor air quality in one place. Wi-Fi lets you check readings from your phone while you’re away.

    Measures: Radon, particulates, CO2, chemicals, humidity, temperature, air pressure

    Check today’s price on Airthings. Use ARS10-10OFF for your ARS discount.

    See Current Price & Shop ↗

  2. Airthings View Radon detector showing a radon reading on its display
    2

    View Radon

    Wi-Fi

    For homeowners focused on radon who want to check readings remotely over Wi-Fi, without the extra air-quality sensors.

    Measures: Radon, humidity, temperature

    Check today’s price on Airthings. Use ARS10-10OFF for your ARS discount.

    See Current Price & Shop ↗

  3. Airthings Corentium Home 2 radon detector next to a phone showing the app
    3

    Corentium Home 2

    Bluetooth and the phone app

    For battery-powered monitoring with an app. Check readings on your phone nearby over Bluetooth, with no Wi-Fi setup.

    Measures: Radon, humidity, temperature

    Check today’s price on Airthings. Use ARS10-10OFF for your ARS discount.

    See Current Price & Shop ↗

  4. Airthings Corentium Home radon detector showing long and short term averages
    4

    Corentium Home

    Screen only, no app

    For a simple radon check right on the screen. No Wi-Fi, app or phone needed—just stop by to see your readings.

    Measures: Radon

    Check today’s price on Airthings. Use ARS10-10OFF for your ARS discount.

    See Current Price & Shop ↗

Product photos: Airthings.

Store prices checked September 28, 2026. Prices can change; the ARS discount is calculated from the listed store price.

Reading your first numbers

Give it a few days before you judge anything. Radon swings with weather, wind, and whether the house has been shut up — a single day tells you very little. The long-term average on the screen is the number that matters.

EPA's action level is 4.0 pCi/L, and they suggest considering a fix between 2 and 4. If your average settles above that, the next step is mitigation, not more testing.

Buying or selling a home is the exception. Those transactions usually call for a test by a licensed measurement professional, not a consumer detector. Check with your agent or attorney before you rely on one. More on understanding results

If your numbers come back high

Send Bill the reading and your town. If you're in our area he'll come look at the home for free and give you a real price before anything is scheduled.

Call (815) 370-9682Text Bill

Affiliate disclosure:We earn a small commission when you buy using our affiliate links or code. It costs you nothing extra — the code takes 10% off. We recommend these because they are the detectors we trust in our own customers' homes.

American Radon Systems installs and services radon systems. The measuring is done by the detector, and you buy it directly from Airthings — we don't sell them. EPA's directory of measurement and mitigation professionals ↗

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