Best Radon Gas Detector Reviews: Top Comparison

We can’t live a day without breathing, you know! But, we don’t breathe just oxygen.
In fact, there are some truly dangerous gases out there in earth’s atmosphere; gases that can cause a lot of issues, including cancer. And, Radon is the most hazardous one from the list. You will need a best radon gas detector to find it.

That is why it’s recommended to use one of the best radon gas detectors at your home — so that you would know if the gas is inside your home. Once again, as it’s the case with any other product, you can’t simply go and choose one machine from the huge list. It requires a lot of time and deep subject-knowledge for a better selection.

Now that you are here, don’t worry. We have created a well-curated list of the best radon detector machines in the market, along with in-depth reviews of the devices.

How We Selected

Because we had shortlisted the best products in market — conforming to the industry standards —, we were able to test around 20 products in a thorough manner. There were both short-term and long-term radon gas detectors, which we tried for the recommended period of time. We also believe that long-term detectors do best when it comes to accuracy of the detected radon-gas levels. One thing we can assure you is this: you’d have the best detection rates and accurate results, no matter which product you pick from our list.

Best Radon Gas Detectors

#1Corentium Home by AirThingsCompact Design
#2Safety Siren Pro Series3Affordable & Easy
#3First Alert RD1Simple & Effective
#4Accustar Alpha Track Test Kit AT 100Passive & Inexpensive
#5AirThings Corentium Pro DigitalExpensive & Advanced

#1 – Corentium Home by AirThings Radon Gas Detector – Best for Perfect Accuracy

One of the best choices in market, Corentium Home by AirThings Radon Gas Detector shows you the accurate results in terms of radon detection. I have used this product for a long while, during which I was so impressed and satisfied. I would recommend this product if you are looking forward to find the amount of radon in the course of time.

There are a few things that make Corentium Home by AirThings Radon Gas Detector the best radon detector you can get — quality of the construction being the pivotal one. We tried the product in different situations, and the accuracy of results remained so perfect. In a single look, you can know about short-term and long-term radon concentration. Thanks to the digital analysis technologies, you won’t have to re-check anything.

Coming to the specifications and design, this radon test kit is pretty compact, at 4.75” x 2.75” x 1” thickness. We did not have any trouble in keeping this product in various parts of our home, for advanced and precise results. Because the device is powered by three AAA batteries, there is no concern about compatibility also. You will be able to take it anywhere you like and power it on.

Corentium Home by AirThings Radon Gas Detector makes use of international-quality construction for best-level accuracy. The results won’t be affected by electromagnetic interference, dust or humidity. I found this superb because I don’t want to compromise the accuracy of results. Some people may say that the product is a bit pricier. However, as far as I’m concerned, I’m ready to pay for the professional-quality results.

At the end of the day, be it for continual observation or singular purposes, this gas detector from AirThings is just the best for professional. If not for your home, you can use the same for professional needs as well.


  • Best accuracy levels
  • Impressive lifetime up to 10 Years
  • Professional-quality, Compact design


  • A bit Pricier

Our Take: We have the product for a long while, and I could not find anything wrong with the system or results in the entire usage period. Corentium Home by AirThings Radon Gas Detector is surely the best radon testing kit we have ever come across, especially because we are strict about accuracy of results. You should go with this radon gas monitor if you are ready to pay a bit more for professional-quality results.

#2 – Safety Siren Pro Series3 Radon Gas Detector – Affordable, Active and Easy to Use

At the first look, this radon detector may look a bit rudimentary. It does not look like an advanced machine, for sure. However, after using the product for a relatively longer period of time, we believe Safety Siren Pro Series3 Radon Gas Detector is one of the affordable choices. By paying a bit less, you are getting all the same accuracy, but you may have to compromise the classy design.

Safety Siren Pro Series3 Radon Gas Detector

Family Safety Products has been one of the trusted names when it comes to this category — so are all their results. Just like the other product we mentioned above, this one also gives you short-term reading and long-term reading. You just have to press a single button to toggle the readings. I must say, despite the older look it has, the LCD Panel is easy to read for all age groups.

First things first, I got the radon test results just after 48 Hours of installing Safety Siren Pro SeUp ries3 Radon Gas Detector. This is a great feature, especially if you have an inspection coming ahead. You can also have a short-term reading average for up to 7 days or a long-term average for up to 5 years. No matter whether it is single-time testing or a continuous analysis; the device showed us the perfect accuracy.

In addition, Safety Siren Pro Series3 Radon Gas Detector makes sure that air is updated every 24 years — so that your results are accurate to the point. One thing about the product is it should be plugged into the wall socket. So, if you are looking for the portability aspect, it can be a problem at times. Otherwise, total power and performance of the device is just superb.

Summing up, while Safety Siren Pro Series3 Radon Gas Detector shows you both continual and instant testing results, we recommend using it for home purposes only. Portability can be a problem too.


  • Standard Accuracy
  • Daily Self-Test
  • Daily Updates of Air
  • Easy to Use


  • Not Portable
  • Rudimentary Design

Our Take: Safety Siren Pro Series3 Radon Gas Detector may not be suitable for professional needs of radon detection. In spite of that fact, you won’t have trouble in single-time or continuous detection of radon at your homes. While we loved the performance and features, portability can be a problem for you. However, as far as you are using it in a single room, it’s all good with this device.

#3 – First Alert RD1 Radon Gas Test Kit – Simple Yet Effective

Up above, we have discussed two fully fledged devices that can detect the amount of radon in the home. In the next position, however, I thought of recommending an effective radon gas test kit, which is also one of the best. For an amount less than $20, you are getting a standard method of radon detection. However, we should warn you that you have to send the kit to the lab for analysing the results and taking actions.

First Alert RD1 Radon Gas Test Kit

On top of everything, First Alert RD1 Radon Gas Test Kit is a complete kit for radon testing. All you have to place the testing materials on the particular room or area and wait for the test to take place. The kit is said to take care of up to 2000 Square ft. of area, which is pretty much. If you have open areas for testing, this is good to go with.

In our experience, First Alert RD1 Radon Gas Test Kit testing period was around 2 to 4 days. And, we just had to send the kit to the lab for getting the results. At the same time, it needs to be noted that you will be doing a short-term test, and that long-term tests are not possible with this device. There isn’t much to talk about the usability part either.

As to the question why I recommend First Alert RD1 Radon Gas Test Kit, there are many answers. First of all, you are spending the least amount of money on it. There are no hidden charges and you are getting a kind of complete package. That having said, you will have to pay the postage fee if you want to get back the lab results and recommendations.

Considering all these, we can recommend First Alert RD1 Radon Gas Test Kit for home needs. however, you have to use separate kits for separate floors.


  • Easy to Use
  • Inexpensive
  • Extensive Coverage


  • No Long-Term Test Support

Our Take: First Alert RD1 Radon Gas Test Kit does not come with any fancy feature. All it does is keeping calm and try to analyse the amount of radon gas at your home. If you are ready to take that effort of sending the kit into a lab and waiting for the results, this inexpensive kit is right for you.

#4 – Accustar Alpha Track Test Kit AT 100 – Passive Test, inexpensive and Worth-Buying

Once again, if you don’t want to spend a lot of money on radon detection, this can be a good option. Just be aware that you have to send the results to lab for confirmation and further recommendations regarding the presence of radon. It’s quite amazing that you can use Accustar Alpha Track Test Kit AT 100 for a short-term test of 3 months or a long-term test of up to 1 year.

Accustar Alpha Track Test Kit AT 100

Using this radon test kit was an easy task for me, because I just had to place the device on a single room. I’d looked for a short-term test and I had to send the device to the lab, thanks to the pre-addressed paid package it came with. One thing to be noted here is that Accustar Labs is an authentic source when you want to deal with radon detection and other stuff.

Accustar Alpha Track Test Kit AT 100 may require around 10 days for the complete testing. After that, you’d get the results mailed back to you. In fact, I found this process really easy for any user. There are not many things to worry about; nor will you have to learn about the healthier levels of radon. All you have to do is to wait for a few days to get back the results from Accustar Labs.

Despite all these, it’s worth noting that Accustar Alpha Track Test Kit AT 100 cannot be used for shorter-term tests. If you ask us, though, we recommend going for around 3 months of testing period — unless it’s really necessary to get instant results. Also, you are getting the perks of portability, since batteries or power source are not involved.

Summing all these up, the product is suitable for utter newbies. As said, the process is simple and you don’t have to spend a lot for getting it.


  • Easy to Use
  • All the fees are pre-paid
  • Short-Term and Long-Term Possible


  • Short-Term is limited to 3 Months

Our Take: As said earlier, Accustar Alpha Track Test Kit AT 100 is one of the simplest solutions to check your home air for radon. The reason why we recommend this product is the authenticity of the results. The Accustar Labs happens to be one of the most trusted voices when it comes to results. Given that you can test for radon in 3-month or 1-Year period, it’s all great too.

#5 – AirThings Corentium Pro Digital Radon Monitor – Expensive and Advanced

As the last product in our list of the best radon gas detector reviews, we have this pretty-advanced device! AirThings Corentium Pro Digital Radon Monitor is not recommended for the common home users out there. On the other hand, it’s my suggestion if you are serious about radon detection and want to use the device for commercial purposes as well. For instance, if you are testing for radon in an office environment or so.

AirThings Corentium Pro Digital Radon Monitor

It’s a pure piece of technology that amazes you when you are a busy radon professional or a home inspector. This tiny box is equipped with four radon sensors, a battery that can live up to 2 years, 5 years of data storage and wireless connectivity options. In short, you can accurately detect the amount of radon present in the air and store it for the time to come. Alternatively, you can access the data from your smartphone.

By now, it should be clear that AirThings Corentium Pro Digital Radon Monitor is suitable for professionals only. If you run hundreds of radon tests every year and want to store data and send detailed reports, this is going to be the optimal device for your needs. Moreover, it’s pretty compact and portable Exposure. Weighing just .66 lbs, you won’t have trouble in taking this device anywhere.

As if these are not enough, AirThings Corentium Pro Digital Radon Monitor has some additional features too. For instance, it comes with a few sensors for pressure, temperature and humidity; so, when you connect it to a computer or smartphone, you get all the information for a detailed report. Other noticeable features of the radon gas detector set include customized report making, delay-system and tamper-resistant design.

Bringing all these together, we have many reasons to recommend AirThings Corentium Pro Digital Radon Monitor to the professionals. Of course, you should be able to spend a lot of money here.


  • Digital System
  • 4 Radon Sensors
  • Large Battery Life
  • Wireless Connectivity via Bluetooth Smart
  • Lightweight, Compact
  • Advanced Functionalities


  • Really Expensive

Our Take: Of course, I would not say AirThings Corentium Pro Digital Radon Monitor is for the common people. I know that it’s truly expensive, advanced and has a lot of functions inside. Because of all these, I would recommend it only when you are a professional, who needs many features and expanded storage. Needless to say, you’d have to spend a lot of money.

Buying Guide for Radon Gas Detectors

Now that you have seen our top recommendations for radon gas detectors, we can make a few things clear. It is no easy task to choose the right type of radon gas detector solution for your purpose — even when you are living in a small home. We had already mentioned that radon exists almost everywhere and a really huge amount of people are dying due to cancerous diseases, which are actually caused by the presence of radon at their homes.

Therefore, as long as you are concerned about the health of your family and the live-ability of your home, you should be careful enough to make the right pick. Here, we will share some general stuff that would help you choose the best radon gas detector for your purpose.

Types of Radon Gas Detectors

Obviously, there are different types of radon gas detectors you can check out. However, as far as home users are concerned, radon gas detectors can be classified into two — Passive Detectors and Active Detectors.

Passive Radon Gas Detectors

This type of radon gas detectors is one package that comes with radon detection set-up. Inside the package, you would be able to spot the right devices for capturing the accurate amount of radon. To use this type of radon detectors, you have to keep it in a particular room or the area. It’s to be noted that the coverage area depends upon how much you can spend and the brand it comes from. Once you have placed the device in the room for the mentioned amount of time, you can send it back to a lab, where it would be tested. Afterwards, you will receive the results and possibly a set of recommendations. When compared to the upcoming type, passive radon gas detectors are easy to use and affordable.

Active Radon Gas Detectors

As opposed to the aforementioned variant, active radon gas detectors come with all the hardware for testing and analysing purposes. So, once you place it in a room for a given amount of time, you can start seeing the exact amount of radon that is present in the room or the hall. Here, however, you have a few sub-sections as well. For instance, you will be able to purchase digital radon detectors if you want. These devices will be showing you a lot of related information along with the amount of radon gas present. On the other hand, a few devices will just show you the amount of gas in a LCD/LED Display. Also, like the third product we have mentioned above, you can have some advanced features too.

Things to Look for

For choosing the best products, you need to consider some major factors too. Some of them are:

  • Power

This is applicable only if you are purchasing an active radon detector set. As we said, it’s an electronic device and it needs to be powered on for functioning. So, there are two major choices — battery-operated or just connected to the wall-socket. Here, the first one gives you the freedom of portability. You can just take the device into any room, when you need to have accurate results from every area. On the other hand, socket-based ones are rather fixed. In short, it’s up to you to make the selection.

  • Testing Period

Radon Tests, once again in active detectors, can be conducted over different spans of time. For instance, you can perform daily checks or weekly checks. Or, if you are looking forward to find the yearly average, you get an option for that too. However, not all devices offer this versatility when it comes to results. So, before you pay the money, make sure that the device is compatible with the desired testing span. For instance, if you’ve an inspection coming up, you would need a radon detector that gives you the results in a few days.

  • Price

Of course, you would be concerned about what you are paying for the machine. As said earlier, passive radon detectors are much affordable than the other kind. On the other hand, because they are coming with all the sorts of electronic hardware, active radon gas detectors would cost you a bit more. Indeed, they have their own advantages and disadvantages. For instance, passive detectors will also give you a documented proof for the radon gas levels, while the other one does not. On the other hand, active radon detectors would be used in different situations and rooms.

  • Accuracy

No matter what, you must not compromise the accuracy of the radon gas detector you are buying. Always be sure that you are getting the correct reading all the time. The best thing you can do is to purchase one of the best products from reputed brands, if you are getting an active device. On the other hand, if you want to get a passive device, make sure that the lab is reputed. Otherwise, you may end up having some faulty lab result.

These aspects need to be considered for the best selection of the best radon detector kit. In addition, if you happen to be a professional who takes care of radon levels and radon mitigation, you can get an advanced package like the last recommendation in our list. That way, you would be able to take care of the radon level in different homes/commercial spaces and get a detailed report of the same.

Wrapping Up

So, you have seen some of the best radon gas monitor and radon detector solutions from the market. While it is completely up to you to choose, you have to consider some aspects too. For instance, you don’t have to spend more than $1000 for a radon detector solution – unless you are looking for professional quality and a few advanced features like wireless connectivity. In the same way, make sure that you can make the right selection between passive and active radon detectors out there, especially when you are concerned about the time required for showing test results.

  • Corentium Home by AirThings
  • Safety Siren Pro Series3
  • First Alert RD1
  • Accustar Alpha Track Test Kit AT 100
  • AirThings Corentium Pro Digital



No matter what device you are using, make sure you do the after-results things right. If you think the amount of radon is way too high, necessary steps should be taken for radon mitigation. You can use the methods that are available in market or contact a radon mitigation expert from the professional world. Either way, it is up to you to select. Nevertheless, always be sure that your home has the least amount of radon in it. Also, while setting up radon mitigation options, make sure that you are getting rid of the possible ways that radon gets into your house through. And, trust me when I say that, these tips are going to make your lives less risky when it comes to cancer and cancerous diseases.