Monitors
Best radon monitors for homeowners
A continuous monitor is for watching your own house over time, and for lending to another household later. It is not the test to use when a home sale requires an approved device or a licensed professional.
Who a continuous monitor helps
- You want to see how the level moves across days, weeks, and seasons.
- You expect to test again, instead of buying another one-time kit.
- You want one device you can carry to a parent's house or an adult child's house.
If you only need a first screen, a short-term kit from a health department is usually the cheaper start. Look there first on the locator.
The Minnesota Department of Health says consumer digital radon monitors usually cost about $100 to $200. Treat that as a state agency's range, not today's Airthings price. MDH also says these monitors have not been approved by the national radon proficiency programs, and MDH does not recommend them for a real estate transaction or for the mitigation decision.
Short-term kit or electronic monitor
| Option | Good fit | Limit |
|---|---|---|
| Short-term kit | A low-cost first look | One window of time. You mail it in or read it once. |
| Long-term kit | A better average across seasons | You wait months for that average. |
| Electronic monitor | Ongoing checks and more than one home | Higher price up front. Not a substitute for a required professional test. |
What we checked on Airthings
Product notes below come from Airthings pages opened on October 1, 2026. We paraphrased them. We did not copy the product descriptions.
Airthings View Radon
Airthings describes View Radon as a Wi-Fi radon detector with an eInk display. The product page says it shows radon, humidity, and temperature, and that you can check live readings in the app.
Sensors named on the product page: Radon, humidity, and temperature.
The Airthings product page showed a list price of $219.99 when we checked it on October 1, 2026. Confirm the current price before you buy.
Airthings View Plus
Airthings describes View Plus as a radon and indoor air monitor with an eInk display, Wi-Fi, and a choice of AA batteries or USB-C power. The product page says it can act as a hub for Airthings Wave devices when it is plugged in.
Sensors named on the product page: Radon (the page says 0 to 500 pCi/L), PM2.5, carbon dioxide, VOCs, humidity, temperature, and air pressure.
Airthings also lists Corentium Home 2 in its site navigation as a digital radon detector with Bluetooth and sensors for temperature and humidity. This directory links View Radon and View Plus because those are the product pages we opened on October 1, 2026. We are not publishing a Corentium Home 2 price.
If you purchase through our Airthings link, we receive a small percentage of the sale at no additional cost to you. Our affiliate link may provide a discount on eligible products. This helps support the local radon-testing directory.
The product link does not apply a discount by itself. Bill's Minneapolis guide says to add the monitor to your cart, enter your name and shipping, then type ARS10 at checkout. That guide says the code is 10% off eligible Airthings products, it does not apply to items that are already discounted, and it does not stack with other offers. Code: ARS10.
How long until a monitor is useful
Follow the guide that ships with the device. Early hours are a start, not a finished average. Give the monitor the time the maker asks for before you treat a number as your long-term level.
Moving the monitor to another home
Reset or start a new measurement the way the manufacturer tells you to. A number from the last house should not follow the device into the next one.
Real estate and mitigation decisions
Rules differ by state. Minnesota's health department, for example, does not recommend a consumer digital monitor for a real estate transaction or for the mitigation decision, and it says those monitors have not been approved by the national radon proficiency programs. If you are buying or selling, use the test your state accepts. A monitor is still a practical way to watch the house between those tests.
Minnesota guidance: MDH radon testing, checked October 1, 2026.