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Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L

4.6 4.6 out of 5 stars 9,692 ratings

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About this item

  • FIRST OF ITS KIND: The first battery-operated, digital radon detector. Monitor your home without the need for an outlet.
  • LONG TERM MONITORING: Monitor for cancer-causing radon gas. Long term monitoring is necessary as radon levels fluctuate daily.
  • BE IN CONTROL: Take action if your radon levels are high. Know if your improvements have worked by checking the short term, on-screen readings.
  • RADON REPORT: Generate a radon self-inspection report easily, whenever you need it.
  • FAST RESULTS: On-screen results show both long and short term readings, for a quick overview of your radon levels.

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 1 x 2.7 x 4.7 inches; 3.52 ounces
  • Item model number ‏ : ‎ 223
  • Batteries ‏ : ‎ 1 AA batteries required. (included)
  • Date First Available ‏ : ‎ December 3, 2013
  • Manufacturer ‏ : ‎ Airthings
  • ASIN ‏ : ‎ B00H2VOSP8
  • Customer Reviews:
    4.6 4.6 out of 5 stars 9,692 ratings

Product Description

The Corentium Home by Airthings radon detector is a state-of-the-art measuring instrument that combines ease of use and performance. The Corentium Home by Airthings radon gas detector allows you to take a reading of the radon levels and its LCD screen displays the average daily, weekly and long term concentrations. Powered by 3 standard AAA batteries, the radon monitor makes it easy to take measurements from one room to another in order to get an overview of the concentrations of radon in a home, workplace, school, a daycare centre or any other location. The Corentium Home by Airthings radon detector is also an essential tool to use when performing property inspections or when checking the operation of a radon mitigation system. The internal architecture of the Corentium Home by Airthings radon monitor comes from advanced technology normally reserved for commercial-type detectors. Particular attention has been paid to the quality and protection of the internal components, allowing the use of algorithms for signal analysis that are more sophisticated. The Corentium Home by Airthings radon gas detector quickly adapts to its environment and eliminates inaccuracies related to external factors, allowing it to obtain the best accuracy in its niche. it requires no annual calibrations throughout its useful life, estimated at over 10 years.


From the brand


From the manufacturer

Corentium Home: Long and short term trends help you stay on top of radon levels.

Airthings Home monitors radon and provides a digital readout
radon detector to protect family

What is radon and why is it dangerous?

Radon is dangerous, invisible, and in every home.

Radon affects the respiratory system.

Radon comes in from the ground and circulates up.

radon in property

Monitor your air quality.

Radon gas is in the air all around us and levels fluctuate daily. The good news is that a digital radon detector warns you when levels are getting high. Simple fixes around the home can dramatically improve your air such as increasing ventilation or sealing cracks in floors or even installing radon mitigation systems and radon fans.

Continuous, long-term monitoring

21,000 deaths are attributed annually to radon gas in the US alone. This and other radon side effects can be prevented by monitoring.

Remember to monitor for radon daily so that you can make small adjustments to improve the quality of your air.

Odorless, colorless, tasteless

Radon is a naturally occurring, radioactive gas that comes up from the ground and can accumulate to unsafe levels in the home. It is odorless, colorless and tasteless.

Should you measure radon when you buy or sell your home?

You’ve heard that the EPA says that if you are buying or selling a home, you should have it tested for radon. In the US there is often a legal obligation to monitor radon for 48 hours before selling property. There are benefits to consider the wider impact of radon and the overall importance of indoor air quality.

What are the benefits of the Corentium Home?

Time icon

Battery icon

Accurate icon

Fluctuation icon

Quick.

See the first indication of your radon levels within 24 hours. Nothing to send to a lab and no fees. Accuracy improves with time: after 7 days, within 10% and after 2 months, within 5% of actual radon levels. Easily reset your device to test a different room.

Simple.

The first battery-operated digital radon detector can be placed anywhere in your home. The batteries last up to two years, making it easy to radon test every room of your home.

Accurate.

Developed by our in-house Norwegian CERN particle physicists, our state-of-the-art radon testing sensor is incredibly accurate. Get meaningful results with continuous monitoring for short and long term averages.

Radon levels fluctuate daily.

Peace of mind with daily monitoring: See both long and short term levels to make the right changes for your home. Generate a radon report as evidence for low levels when selling your home.

Corentium Home Radon Detector Wave Radon View Radon View Plus
Corentium Home Wave Radon View Radon View Plus
Customer Reviews
4.6 out of 5 stars
9,692
4.4 out of 5 stars
1,695
4.2 out of 5 stars
254
4.0 out of 5 stars
1,034
Radon sensor
Temperature & Humidity
Air Quality (CO2, PM, VOCs, and more)
Free App & Dashboard
Bluetooth
WiFi (remote access to data)

What's in the box

  • Radon sensor, 3 AAA batteries
  • Product guides and documents

    Looking for specific info?

    Customer reviews

    4.6 out of 5 stars
    4.6 out of 5
    9,692 global ratings

    Customers say

    Customers like the length, radon level, portability, accuracy, and performance of the gas smoke fire alarm. For example, they mention it gives long term average, able to see how radoN levels change daily, and it's compact. Customers are also impresseded with the performance, saying it gives first readings very quickly.

    AI-generated from the text of customer reviews

    974 customers mention789 positive185 negative

    Customers like the quality of the gas smoke fire alarm. They say it works great, is easy to use, and has no problems. Customers also say it's reliable and accurate, and provides immediate and helpful data.

    "...I also like how simple this device us, it's foolproof...." Read more

    "...I am very happy with both units. No problems - I lent one out to my daughter for a few months...." Read more

    "...2. Precision guaranteed.3. Great design and very light. Very innovative tech.4. Can be used as many times as needed...." Read more

    "...tests are very close to each other and therefore probably a reliable test (i.e. repeated testing yields values close in value to each other) and are..." Read more

    677 customers mention643 positive34 negative

    Customers find the instructions for the gas smoke fire alarm to be easy to set up and use. They also say it's completely hassle-free, simple, and foolproof. Customers also mention that it'll read out pretty accurately.

    "...I also like how simple this device us, it's foolproof...." Read more

    "...we used it to check every room in our houseeasy to use and read" Read more

    "...Things we liked:* Very easy to use, basically just put in the batteries and go...." Read more

    "1. Easiest to start and handle. User friendly.2. Precision guaranteed.3. Great design and very light. Very innovative tech.4...." Read more

    647 customers mention466 positive181 negative

    Customers like the accuracy of the gas smoke fire alarm. They say it's a life saver, gives accurate results, and is user friendly. Some say the readings seem reasonable and match mail-in kits. Overall, most are satisfied with the accuracy and reliability of the product.

    "...I've found the Airthings device to be quite accurate, nearly matching the 2-week results from an independent test using two Sun Nuclear radon..." Read more

    "...and did the math, as I have, you would see that it is quite accurate for an inexpensive radon continuous monitoring device.... and way more than..." Read more

    "...and then even when moved to a drier location, will give subsequent inaccurate low readings...." Read more

    "1. Easiest to start and handle. User friendly.2. Precision guaranteed.3. Great design and very light. Very innovative tech.4...." Read more

    431 customers mention357 positive74 negative

    Customers like the value of the gas smoke fire alarm. They mention it's well worth the price, a perpetual money-saver, and accurate for the cost. Readers also say the setup is easy and the product is terrific.

    "...if a charcoal test makes you want further testing, and it is well worth the price...." Read more

    "...are extraordinary for a low priced unit...." Read more

    "...Price is very reasonable considering the use we have made of them...." Read more

    "...4. Can be used as many times as needed.Overall I can say great value and must to have household product." Read more

    343 customers mention302 positive41 negative

    Customers like the radon level of the gas smoke fire alarm. They say it's very helpful to have a constant radom reading, and it enables them to see how rado levels change daily. The product calibrates and starts to track radod levels right away. Customers also appreciate that the unit provides a current rado level, a 7-day average, and a radond standards. They also say it is a great device to spot-check and monitor radoN, and is excellent for long-term monitoring.

    "Very good tool to monitor radonwe used it to check every room in our houseeasy to use and read" Read more

    "Have used charcoal monitors before. This monitor enables you to see radon readings during the day...." Read more

    "...This is just fine for it's purpose. It just sits in my basement monitoring levels. Here's why I bought it...." Read more

    "...The new device works perfectly and it is a very reliable Radon detector." Read more

    97 customers mention83 positive14 negative

    Customers like the length of the gas smoke fire alarm. For example, they say it gives them a long-term average, 1 day, 7 day, and weekly readings. They also appreciate that it provides a short-term and long- term perspective. That said, some complain the long-lasting battery life is a plus.

    "...charcoal test you mail in, this unit give real time readings and long term readings and it seems to be accurate by my lending to others to check..." Read more

    "...You can actually see it fluctuate up and down and it gives you a long term average too...." Read more

    "...Appears to be averaging correctly for long term reading. It's been on continuously for a month now, with no battery issues...." Read more

    "...(It also displays a 7-day rolling average and the Average-Since-Reset.)..." Read more

    92 customers mention88 positive4 negative

    Customers are satisfied with the performance of the gas smoke fire alarm. They mention that it gives first readings very quickly, within hours, and displays results instantly. They appreciate the quick feedback and response, as well as the ease of use. Some say that the device works well and is simple to use. Overall, customers are happy with their purchase and recommend it to others.

    "...I like how quickly I can get results...." Read more

    "...The quick feedback and response we found helpful.*..." Read more

    "...Also, I am able to change the fan speed on the system and I have been able to determine that I need to run about 80% to be effective...." Read more

    "...to get the results of a charcoal test you mail in, this unit give real time readings and long term readings and it seems to be accurate by my..." Read more

    87 customers mention87 positive0 negative

    Customers like the portability of the gas smoke fire alarm. They say it's compact, straightforward, and can be taken anywhere. Customers also say it can be moved to any room in the house and reset with no issue. They mention it'll fit in a cell phone pocket and is useful to keep in the home.

    "...Lastly, I also like that you can easily test different places in your house, or even different houses (we recently tested my parents house)...." Read more

    "...User friendly.2. Precision guaranteed.3. Great design and very light. Very innovative tech.4...." Read more

    "...The ability to get readings within hours and portability makes it an excellent choice. I'll probably get another one for long term measurements." Read more

    "...Portable, so you can use at all your properties." Read more

    Good overall, seems reliable when compared with charcoal tests
    5 Stars
    Good overall, seems reliable when compared with charcoal tests
    [Update 2: August 2016]In Feb 2016 I ran another side by side comparison of the Corentium 223 vs the SS (Safety Siren), and this time using two charcoal tests as "controls." All four were placed around the same spot (pictures do not show the charcoal tests but they were right next to the Corentium and SS). The Corentium and the SS were turned on at the same time and allowed to run until the SS started to show a result (due to the SS not showing an initial reading until a couple days after turning it on or resetting it, whereas the Corentium starts showing a reading almost immediately).Once the Corentium and SS were on for a few days I opened both charcoal tests and left them open for 4 days (the longest time allowed by the lab to get legitimate/accurate results). Then I sealed up the charcoal tests and mailed them in and checked the readings of the Corentium and the SS which had now been on for 7-days (the reason for 7 days is that the devices both provide readings at 7 days but other readings are at different time parameters and so not comparable). The results are shown in my pics (3rd-6th pics).Charcoal Test #1: <0.5 pCi/LCharcoal Test #2: <0.6 pCi/LCorentium 223: 0.97 pCi/L ("7 days" reading)Safety Siren: 1.2 pCi/L ("S"=7 days reading)Please note that I bought both the Corentium and the SS in March 2014 and so both were almost 2 years old at this point. I'm not sure the charcoal test results and those of the Corentium and the SS can be compared directly since their readings are over different times (approximate 4 days for the charcoal test vs 7 days for the two devices; I had to do this since the charcoal tests cannot be tested for more then 4 days and the two devices do not show readings at shorter times (e.g. 3 days, etc.).Interpreting the results is not exactly easy or maybe even valid, but it does at least seem to show that the devices are not wildly different than the charcoal readings and more importantly, they seem to read higher rather than lower than the charcoal readings (i.e. they do not give falsely low readings). It also shows that the charcoal tests are very close to each other and therefore probably a reliable test (i.e. repeated testing yields values close in value to each other) and are assumed to be the most accurate way to test radon levels. Another finding is that the SS, which needs re-calibration annually, had higher values compared with the Corentium (which is not supposed to need retitration over the life of the device which is stated as about 10 years). However, when I left the two devices on for a few more days (see the 6th pic) I found that the values became much closer to each other: 0.9 for the SS and 0.94 for the Corentium.Conclusions? I would say that based on my amateur and non-expert tests and interpretation of the results, that both devices are probably reliable and accurate enough to get a decent approximation of the radon levels in your home. The SS, though cheaper than the Corentium, is uglier and needs a wall power adapter whereas the Corentium is smaller, better looking, lasts a long time on batteries, and can be hung on the wall. It also reportedly does not need re-calibration for the 10 year lifespan and so I consider the Corentium to be a superior device and would recommend it over the Safety Siren.[Update 1: March 2015]Sorry to the folks who were waiting to see the results of my side by side comparisons between this device, the Safety Siren, and the charcoal mail in tests. I've attached a photo of both detectors (along with the charcoal test, only did one of those) side by side after both had been sitting there for over a week. As you can see, the Safety Siren is set to short term reading, which I believe is the past 7 days reading, and shows at 1.6 while the Corentium shows 1.64 and is for the past 7 days also. So, based on this test (and I've done this several other times with the same, comparable results) both detectors seem to give similar readings.Of course, the gold standard seems to still be the charcoal, mail in kits and so I've attached a photo of that reading too. Basically, the kit shown in the pick was set out for the required time (48 hours) and mailed in promptly. The reading I got back from the company was 1.7 pCi/L, so pretty close to both detectors. The Safety Siren only goes to one decimal place and so is a bit more limited than the Corentium which goes out to 2 decimal places, but in reality 2 decimal places is probably not very valuable or helpful.So, to summarize, my test did show that the device is pretty accurate compared to a charcoal test and also that the Safety Siren was comparable -- although that device does not run on batteries and apparently needs to be recalibrated on an annual basis or so. The Corentium supposedly does not ever need to be recalibrated which just seems really odd to me. I will repeat these tests periodically and update this review on an annual basis (or until a better detector comes out than either of these!) to see how well the Corentium stands up over the years with regards to calibration need. I have also upgraded my rating to 4-stars.---[Original Review: April 2014]Just want to point out that this radon detector does not wait for a couple days to give an initial radon reading, like some detectors do (like the Safety Siren Pro Series3 Radon Gas Detector - HS71512 by Family Safety Products, Inc. does), so basically within a minute or so of turning this device on for the first time (or after resetting), you will start to get initial readings that are predictably around 0.00 pCi/L. Obviously, getting a reading after 10 seconds isn't helpful, and I don't understand why it would give a worthless reading instead of making you wait for the necessary time (typically 2 days with the Safety Siren Pro detector) before giving you a reading.Over the next days/weeks, the reading will often steadily increase for the same reason, making you really question how useful this device is unless you wait at least a week or so. Even then, you're not sure if the 7-day reading is a weighted average -- meaning that those early really low readings would bring the average rating lower than it actually is. When I placed the Safety Siren Pro and the Corentium side by side for about 2 days in my basement near my sump pit, the readings were dramatically different: the Safety Siren gave a 1.7 and the Corentium around 0.56. Over the next couple days (again, the initial readings were after 2 days already), the Corentium reading starting to creep upwards, going from mid-0.5s to around 1.0 and then above, while the Safety Siren Pro stayed fairly steady around 1.7 Another couple days may bring the Corentium to around the reading of the Safety Siren Pro, which would make me feel better that they're both reliable if given enough time.I have ordered some charcoal testing kits (which get sent and read by a lab) to use as a kind of reference testing (supposed to be the best way to test apparently) to see which, if either or both, is accurate in detecting radon levels. I will update this review when it does come back, but preliminary testing with the Corentium leaves me unimpressed, especially for the hefty price tag.
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    Top reviews from the United States

    Reviewed in the United States on October 4, 2023
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    5.0 out of 5 stars Accurate, foolproof, and a life saver
    Reviewed in the United States on October 4, 2023
    I'm really glad to have this device. When we bought our house 15 years earlier, we had done a radon test and found the levels to be low. But within the last few years I'd started using the unfinished basement quite a bit (home gym), and randomly ordered a charcoal radon test off Amazon. It took me a few months before I finally used it, but after getting the results back, I found that our radon levels were above safe limits (~10+ pCi/L).

    That freaked me out, and I wanted to quick answers, so I bought this Airthings radon detector from Amazon and had it the next day. It confirmed that our levels were higher than they should be. Further, it also revealed our levels were above safe limits even on the floor above the basement. I'm so glad we didn't have to wait for another charcoal test.

    A few days later, we had a radon system installed that basically sucks the radon out of the ground, underneath the crawlspace and concrete basement floor. This was a year ago and it has been very effective, reducing our radon levels down to a 1-year average of ~1.3 pCi/L.

    I've found the Airthings device to be quite accurate, nearly matching the 2-week results from an independent test using two Sun Nuclear radon testing devices.

    I like how quickly I can get results. For instance, I recently found that opening windows on the top level of our house causes radon levels to increase in the basement (to ~3-4 pCi/L), and this happens due to a chimney effect creating negative pressure in the house, causing it to draw more radon out of the ground. I also learned that I could prevent the negative pressure by also opening windows on the lower level of the house. If I didn't have the Airthings device, I would not be able to tell how these kinds of changes affect radon levels.

    For any kind of test like this, it's important to give it some time (a day or two minimum), as radon levels naturally increase and decrease all the time, so you can only trust longer term averages. And the longer the test, the more accurate the number. The Airthings device doesn't give you minute-by-minute readings for this reason. Instead, it gives you, short term 24-hour, 7-day, and long term averages, which is ideal.

    I also like how simple this device us, it's foolproof. There's really nothing for you to do other than finding a good place to put it, and reading its screen. There are no buttons (unless you count the tiny reset button on the back, which you may never use).

    It shows you the 1-day, 7-day and long-term averages by rotating the numbers every few seconds on the screen. The batteries last a really long time. We've been running the device on the original batteries nonstop for over a year, with no sign of slowing down.

    Lastly, I also like that you can easily test different places in your house, or even different houses (we recently tested my parents house). It would be a pain to do this with charcoal tests.

    I highly recommend this device, especially if a charcoal test makes you want further testing, and it is well worth the price. I can't think of any downsides and I will never be without one of these devices.
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    Reviewed in the United States on February 9, 2019
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    A250212
    5.0 out of 5 stars Buen producto, buen precio, buena marca
    Reviewed in Mexico on June 19, 2019
    One person found this helpful
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