---
product_id: 2430089
title: "Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L"
brand: "airthings"
price: "$453"
currency: NZD
in_stock: true
reviews_count: 8
category: "Airthings"
url: https://www.desertcart.nz/products/2430089-airthings-corentium-home-radon-detector-223-portable-lightweight-easy-to
store_origin: NZ
region: New Zealand
---

# Real-time short & long-term radon averages Portable, lightweight & easy to move 3 AAA batteries, 1+ year runtime Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L

**Brand:** airthings
**Price:** $453
**Availability:** ✅ In Stock

## Summary

> 🏠 Breathe Easy, Stay Ahead: Your Home’s Radon Guardian

## Quick Answers

- **What is this?** Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L by airthings
- **How much does it cost?** $453 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/2430089-airthings-corentium-home-radon-detector-223-portable-lightweight-easy-to)

## Best For

- airthings enthusiasts

## Why This Product

- Trusted airthings brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Long-Term Reliability:** No annual calibration needed, with a decade-long lifespan and included batteries for immediate use.
- • **Data-Driven Peace of Mind:** Instant on-screen readings with 1-day, 7-day, and long-term averages keep you in control of your air quality.
- • **Effortless Radon Vigilance:** Battery-powered freedom means no outlet needed—place it anywhere, monitor everywhere.
- • **Professional-Grade Accuracy:** Advanced algorithms and commercial-level tech ensure reliable radon detection trusted by experts.
- • **Portable & Lightweight Design:** At just 3.5 oz and compact size, easily move it room-to-room or between properties for comprehensive testing.

## Overview

The Airthings Corentium Home Radon Detector is a portable, battery-operated device delivering professional-grade radon monitoring with real-time short and long-term readings. Lightweight and easy to use, it requires no outlet or annual calibration, offering over 10 years of reliable service. Trusted by radon mitigation specialists, it empowers homeowners to detect and respond to radon risks quickly, ensuring safer indoor air quality.

## 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.

Review: I would recommend - I’m very happy with this radon detector. It was specifically recommended to me by a professional radon mitigation specialist, which gave me confidence in the purchase. After mitigation, the professional left his own monitoring device in place for comparison, and the Airthings Corentium tracked very closely to his professional readings. That really reassured me about the accuracy. Setup was quick and easy, and the readings are clear and easy to understand. I appreciate that it provides both short-term and long-term averages, which is important when monitoring radon levels over time. The device feels well made and reliable. If you’re looking for a trustworthy radon monitor that professionals actually recommend, this is a solid choice.
Review: Accurate, foolproof, and a life saver - 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 desertcart. 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 desertcart 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.

## Features

- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00H2VOSP8 |
| Batteries | 1 AA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #1,359 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #5 in Gas Detectors & Alarms |
| Brand | Airthings |
| Color | black |
| Customer Reviews | 4.6 4.6 out of 5 stars (10,807) |
| Date First Available | December 3, 2013 |
| Global Trade Identification Number | 07090031102234 |
| Included Components | Radon sensor, 3 AAA batteries |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 3.52 ounces |
| Item model number | 223 |
| Manufacturer | Airthings |
| Material | ABS |
| Number of Items | 1 |
| Operating Humidity | 95 percent |
| Part Number | 223 |
| Power Source | Battery Powered |
| Product Dimensions | 1"D x 2.7"W x 4.7"H |
| Sensor Type | radon detector |
| Size | 1 Pack |
| Special Features | Lightweight |
| Style | Original |
| UPC | 854232008019 |
| Upper Temperature Rating | 104 Degrees Fahrenheit |
| Warranty Description | Airthings has a 5-year extended warranty available on all air quality monitors for consumers. Registration is required within 30 days of the purchase on the Airthings website. Registration is free and your statutory rights are not affected. |

## Product Details

- **Brand:** Airthings
- **Color:** black
- **Global Trade Identification Number:** 07090031102234
- **Item Weight:** 0.22 Pounds
- **Operating Humidity:** 95 percent
- **Power Source:** Battery Powered
- **Product Dimensions:** 1"D x 2.7"W x 4.7"H
- **Sensor Type:** radon detector
- **Style:** Original
- **Upper Temperature Rating:** 104 Degrees Fahrenheit

## Images

![Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L - Image 1](https://m.media-amazon.com/images/I/71xTKuK7zHL.jpg)
![Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L - Image 2](https://m.media-amazon.com/images/I/71dwTmik-KL.jpg)
![Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L - Image 3](https://m.media-amazon.com/images/I/51yA72+fovL.jpg)
![Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L - Image 4](https://m.media-amazon.com/images/I/61InZrU4ZBL.jpg)
![Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L - Image 5](https://m.media-amazon.com/images/I/61Cx0b8bLtL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: how often does the tester need to be calibrated and how much does it cost to calibrate**
A: To cut through all of the nit picking and posturing:  This is a home unit, not a lab instrument.  It will give you practical insight, not NIST calibrated precision.  On the other hand, we are talking about a gas whose concentration will ebb and flow.  As a home owner, you want to know is this "no problem" (0 pCi/L), "meh" (2.7<), "hmmm" (4<) or "Holy Marie Curie" (officialy set by NIST as >20).  So if you are a homeowner I think this is fine.  If you are a pro and you are using it as a quick pocket reference before setting up real monitoring, still fine.  If you are Sheldon Cooper, stop being mean to homeowners and go order something NIST traceable, along with a NIST traceable calibration reference so you can re-calibrate every time you use it.  That shouldn't cost much.

**Q: Are we positive the readings are accurate?  I have now tested the first floor of the house and am getting a reading of 7.5 pCi/l.**
A: We have two older (15+ years) Safety Siren meters that read 2.3 & 2.4 for both long and short readings and seem stuck even after a reset/retest in our radon mitigated basement.  The new Airthings 223 started a little over 2.0 and slowly dropped to 1.8. Yesterday I resealed the sump pit covers to the floor and the Airthings 223 1-day average already (<24 hrs.) dropped to 1.43. It seems to correctly reflect variations with short term readings. This could be just coincidental with random variations but I feel that it is reasonably accurate and responsive to changes in the environment. I’m about to buy a second unit to replace our old (tired?) meters.

**Q: what is the shortest amount of time you can do a test with this device? a home inspection last only a few hours..will it have to be left over night?**
A: I own this unit.  My experience is the lower the level of radon, the longer it takes to spit out a short term reading.  Using it on my screened porch, it took 24 hours to show a reading of .54 which is generally understood to be the amount of level naturally occurring in the outdoors.  I had levels of 15 confirmed in my basement via traditional test and this unit gave me an initial reading of 8 in just under and hour and continued to increase every 45 mins until ultimately stopping a 15 in just under a total 0f 12 hours. Since mitigation I have readings of between 1 and 3.5.

**Q: I see there are air holes in the back, so if it is placed against a surface, won't it impede the airflow into the detector?**
A: According to the company's website, the unit should be placed on its back (display facing upwards), on a flat surface, at breathing-level height, and away from windows, doors, air vents, etc.  See https://support.airthings.com/hc/en-us/articles/115003370189-How-do-I-place-my-Home-radon-detector-to-obtain-correct-measurements-

Or as their FAQ answer states:  "You can just lay it flat on a table or a shelf. The air flows into the Radon chamber as usual."  https://support.airthings.com/hc/en-us/articles/115001097069-Can-I-just-lay-the-unit-flat-on-its-back-side-

## Customer Reviews

### ⭐⭐⭐⭐⭐ I would recommend
*by J***E on January 3, 2026*

I’m very happy with this radon detector. It was specifically recommended to me by a professional radon mitigation specialist, which gave me confidence in the purchase. After mitigation, the professional left his own monitoring device in place for comparison, and the Airthings Corentium tracked very closely to his professional readings. That really reassured me about the accuracy. Setup was quick and easy, and the readings are clear and easy to understand. I appreciate that it provides both short-term and long-term averages, which is important when monitoring radon levels over time. The device feels well made and reliable. If you’re looking for a trustworthy radon monitor that professionals actually recommend, this is a solid choice.

### ⭐⭐⭐⭐⭐ Accurate, foolproof, and a life saver
*by T***N 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.

### ⭐⭐⭐⭐⭐ The Corentium 223 should be in every home where Radon is a concern!
*by J***C on January 16, 2016*

The Corentium 223 should be in every home where Radon is a concern! Several years ago, I had a sub-slab depressurization system installed after a charcoal test measured 7 pCi/L. At the time, two follow up charcoal tests came back at 3.4 and 2.3 pCi/L so I felt better but for the past few years, I've still wondered what a longer term test would show. For peace of mind, I purchased the Corentium 223 and I have since learned so much about how Radon levels vary given the weather and how a charcoal test, while accurate, is going to only tell you so much. I've had the Corentium 223 set up in my basement for the past 3 months in mostly closed house conditions and found my long term average to be 1.76 pCi/L, but the daily average was as high as 8.3 pCi/L! The more rain fall in the past 24 hours, the higher the Radon level in the basement. On clear sunny calm days, the levels dropped to around 1 pCi/L. There are a lot of sites that talk about how Radon levels vary depending on the weather, but I've never found any site that details exactly how the levels increase by rainfall. This could be unique to my property, but the correlation has been eye opening. Hoping I could improve the effectiveness of the mitigation system, I decided to seal the crack between the wall and floor next to the suction pipe by adding silicone along that wall to seal the joint. (I've seen several sites suggest this and I could hear a slight hissing with the air leaking so figured I'd give it a try to see if there was any change.) The next day, the 1 day average was just 0.10 pCi/L! The following week, the 7day average dropped to 0.71 pCi/L, even after one day of heavy rain that week!!! Another concern I have had is the amount of Radon in my water. I have a private well and have considered having the water tested, although research I have read on the topic indicate almost all water from private wells will contain Radon, but the danger is really the amount of Radon that you breath in, not consume. While the Corentium 223 only measures the amount of Radon in the air, it will measure the amount of Radon in the house that is given off by water use in the house such as showering and doing laundry. My concern was that I have a whole house humidifier that runs occasionally in the winter months and uses water from the well. While I do see a slight increase in Radon in the house when the humidifier is running, it only seems to be 1 - 1.5 pCi/L increase and it is hard to say if it is really from the humidifier or just natural fluctuations. I have yet to read any warnings on the EPA site or other sites about the hazards of increased Radon exposure when using a whole house humidifier on a private well, but this monitor was able to help put my mind at ease on the issue. If you really want to know the Radon levels in your home, and measure effects of various mitigation strategies, this is the only device I've found on the market that will give you immediate, reliable and accurate data. After 24 hours of powering on, you have your first readings and after 7 days you have your first long term average. It is simple in the design and implementation and the quality of construction is superb. I should also mention that I ordered the Safety Siren Pro Series3 Radon Gas Detector - HS71512 by Family Safety Products, Inc. , but the device I received wouldn't power on. I returned it the next day and purchased the Corentium 223. There is no comparison between the quality of construction between the two devices and with annual calibration requirements of the Safety Siren, the price for the Corentium for 10+ years of use is an easy sell. The device has a micro USB port on the side. My only wish is that there was support for downloading of Radon readings to a computer. Being able to download historical readings would allow for graphing and comparison to local weather reports. If it did this, I'd give it 10 stars! I would highly recommend the Corentium 223 if you have had 2 charcoal tests with results >4.0 pCi/L. In my mind, the Corentium 223 is the absolute best digital Radon monitoring device on the market today!

## Frequently Bought Together

- Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L
- Multiple Purposes Case for Corentium Home Radon Detector by Airthings, for Desktop and Wall-Mounted
- First Alert Radon Gas Test Kit, RD1

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-02*