20 Best Long Term Radon Test Kit (2023 Updated)

I’m a professional, and this is an excellent test. You expose activated charcoal for a few days, then seal it up and send it to the lab. They will analyze the air absorbed by the charcoal and send back a very clear and what appears to be trustworthy radon assessment.

They advise sending it to them UPS, which is more pricey than regular first class mail, but that’s not really an issue. There is evidently a lot of care expended in making sure the test is done responsibly, and they make a big effort to document what needs to be documented.

In fact, filling out the forms is a more effort than actually exposing the charcoal!.

I bought this and stamped it with 5 stamps and filled out the form and sent it in, and I never received the results. They did send me an e-mail saying they never did the test because they didn’t receive the kit in time (I sent it about 3 days after I did the test) I come back and look today and it is more expensive now, too.

It’s just some charcoal in a pouch, can’t imagine it would hold up in court. That’s why they will never give you a positive test, and it even says if they give you a positive, you need to RETEST! If first alert wants this down, they can pay me 500,000$ Thanks!.

Easy to follow directions and fast accurate results. Don’t hesitate, its better to know then to risk serious health complications down the line. I now have a radon mitigation system installed in my basement.

I use this product in the basement. The family uses it a lot. I want safety regarding Radon gas. The sensor reading matches two other teasts that I took for verification.

This device could not be easier to use. It is important to read the directions about best places to locate the device. For example, avoid direct sunlight on the device or placing it on the floor. It also works best for long term monitoring to get accurate results.

It will certainly read daily exposure (takes about 24hours to get your first day reading and will count down with dashes until you get your first reading). The dashes mean it is working! The device averages over time so waiting about 2 weeks (preferably more) will give more accurate results and at the same time it will show you the spikes in radon levels.

In reading about radon testing, many sites (including EPA) recommend 90 days. Very happy with the device and the instructions are very easy to read. The battery is already installed in the device and it is activated by simply pulling the tab.

This has saved me $ over the cost of professional monitoring. I still need to take care of the elevated radon levels in my home but having this device has been very helpful to validate there is an issue.

Don’t freak out from the readings as low levels of radon cause health issue over time – if readings are super high then the device will give that info within one day and you can contact a radon pro to mitigate.

The device can be moved to any room and each time you will want to start new readings and wait a day to get an accurate average level. This is similar to noise readings where during the day in your house you have lots of noise and after one day you will get an average of all the noises (the screams and whispers will average out).

Really noisy days will get averaged with quiet ones over time. If the device was more affordable I would have one in each major room where radon is likely to be present. If you are buying a home, leaving this in one place for 2 weeks during the buying process would be really smart.

Hope the info helps.

I own 2 of these devices and one day the radon readings went off the chart (like 10x) normal on one sensor. I placed both my sensors next to each other to confirm the issue and after a week the sensor was still 3-5x higher than the other sensor.

At that point I contacted support who spent 1 month looking at the readings and telling me to do all kind of things to only come back and say this is normal… When I asked how have one sensor reading 40 and another reading 200 + could be normal I was told that I needed to completely reset both devices and to contact them after another month goes by.

Needless to say this was the worst customer service I have ever had. I clearly have a bad sensor and being told to wait 2 months to confirm the there’s an issue is unacceptable. I could only imagine how bad the customer support would be if you only had a single device with no way to prove its not working.

I was going to pick another one up but after this experience I highly recommend staying away from these.

I was dubious at first. The product we selected was an older model–because we wanted it to match the one we already had–we needed to compare measurements in different parts of the house. The package arrived on time and postal packaging was fine but the product packaging had been repaired–the packaging was ripped and it had been re-taped–like when something is restocked.

Nonetheless, everything was in there and the product was as good as new. Phew!–our experience with restocked items is bad. Operationally, the Airthings 223 Corinthium is a monitor worth buying if you are concerned with radon exposure and find you may need to reduce the levels.

A decent monitor purchase in such a case is worth the investment.

Without hvac I wanted to know when manual ventilation would be a good idea and how often. Within a couple of months I know how much of a crack to open the windows in whatever weather to keep happy indoor air.

It’s surprisingly accurate/reflective to what I’d expect with humidity/voc/co2 depending on activity within my home (cooking, cleaning, showering, exercising, company, windows open, etc). It’s reassuring to know that the radon level is relatively low in my apartment (assuming that’s accurate).

My only complaint is I can’t personalize my tolerances to keep the ring green when all things are within ranges I readily accept. Breathe easy :).

Compared to other options this is a permanent reader also calculating averages. It measures radon, humidity and temperature with a great Red/ Amber/Green dial and an app that gives graphs by the hour.

Super tool, going beyond the simple readers. The price is the best I found in UK, all well researched. And the service from Dyas is excellent as usual.

Our home has 4 Airwave monitors, including the wave mini, wave and wave plus. After purchasing, and being thrilled with the products, we couldn’t resist adding more for full coverage of our home. Prior to adding these sensors to our home, we had severe negative pressure issues and a combustion spill.

We can now be assured that our VOCs remain low, the barometric pressure is appropriate and can sleep knowing we are safe. I cannot say a ought good things about Airthings, and their customer service.

If I could afford it, I’d buy a wave mini for every friend and family member I have!.

This unit is great because it produces a reading every 15-minutes, has a nice OLED display, and can be interrogated via Bluetooth using a phone app. It’s well done. I’m very pleased with this unit. The quality is good.

The tests “seem” accurate compared to our other tester. The app is very useful. I recommend for everyone.

Hi, I am a scientist and bought this product after reviewing data on the manufacturer’s website. The product worked very well and allows you to measure radon very quickly in multiple parts of a building.

Also, you can change conditions in the building and test for a change in radon. I found this very useful for planning radon mitigation. I ran some tests with old fashioned charcoal kits, and this machine provided similar results each time.

I expect that the machine is more accurate.

Bought the House Kit (Mini, Wave, Hub). Used the Wave for basement radon and Mini for other places in the house such as bedrooms. Sensors give frequently reporting and can be broken down really well on the app or on a web dashboard.

Only complaint is the the Wave’s humidity sensor needs calibrating since it’s about 7/8% higher than other sensors (3 other non-Airthings sensors) – and it doesn’t seem to have manual calibration for RH (https://help.

airthings. com/en/articles/3726328-wave-plus-calibration-period). Dashboard is a fantastic feature and there is a data export feature. Would also be helpful to have some sort of visual export feature such as the dashboard presents, but I imagine you could build your own visualization with the exported data.

This is something everyone should have in their home. I have never worried about radon or air quality. I just didn’t think about any of that. This system has changed my mind. It is so easy to use. Once set up, you can wave in front of either one and it will light up green, yellow or red which is a quick snapshot of how good or bad the air quality or radon level is, depending on which device you are in front of.

The larger device is for radon and the smaller mini is for VOCs. Both measure humidity and temperature as well. The mini also checks for mold growth risks which is wonderful. The app is very easy to use and gives a more thorough look at levels.

If the devices are green then I don’t really have a need to check the app, but anything else I do to see how high the levels are. I honestly can’t say how accurate the radon level detection is since I have never had it measured here, again, something I just never even thought about.

The level it detects does fluctuate daily so it is picking up on it. So far it hasn’t been too high. VOCs are something I know I have in my home so I did expect that to be high often. It’s interesting to see how the level changes throughout the day which seems to be very accurate with what is going on in my home.

It’s been very eyeopening to see just how bad it gets. I highly recommend this system to anyone looking to keep an eye on their air quality and radon levels.

I had previously purchased the Airthings wave plus and LOVED it. I loved how it showed me that i have low Radon levels and how it helped me monitor humidity and Co2 levels in my basement. It has been invaluable especially since i am now working from home 5 days a week.

I know when to open windows and when to turn on my dehumidifier or humidifier for healthier air. I bought the House kit from Best Buy because I want to monitor the upstairs of my home as well. My upstairs tends to have different air quantity and I read that certain humidity levels help keep viruses and allergies at bay.

The Hub is soooooo easy to setup. I was able to easily link in the new Wave mini for my bedroom and the the wave for the living room. With the hub i can monitor my house air anytime and anywhere from the App HIGHLY recommend.

Best product in the Market for air monitoring.

After reading reviews about Radon detecting products, I decided to get an on-going monitor versus a one shot deal one which I would likely need to repeat multiple times. I initially purchased an Air Wave+ and hub and was very impressed with everything, easy to install/configure (no issues) and I was monitoring in just a few minutes.

After seeing my levels being so high, I moved the sensor a few times to zero in the Radon points of entry, I realized that it would be difficult to monitor difference in various spots in our basement and decided to purchase a second sensor.

This setup makes me very confident I will understand where and and at what levels Radon was entering. The app is great; I use it on my phone, my tablet and on my laptop. I really like the Web dashboard it gives me 12 hour periods as well.

The fluctuations forced me to learn a lot more about Radon and how it fluctuates sometimes quite significantly with variations in barometric pressure. The colour coding is a nice touch and makes it easy to see if one or more of the 6 items monitored is above warning or safe tolerances.

Excellent value for a quality product, that works as advertised and is both simple and powerful. We are very happy with the purchase and would not hesitate to recommend. Thanks.

Had this Airthings plus for about 2 weeks now. Very cool to be able to monitor your air quality including Radon levels. The levels and effects of radon don’t seem to be very common knowledge strangely enough.

Turns out the Okanagan Valley actually has pretty high levels. This unit is very easy to use and track many aspects of your air quality. The only drawback for me is that the only way to gather the data is via Bluetooth.

For most people this will be a non issue, however I would rather have the choice to turn the bluetooth off and upload data via lan connection or SD card as we have a wireless free home ( had to make an exception for the airthings for a limited time ) Overall very satisfied with the performance of product and associated software.

5 Stars. If you are anything like me and enjoy tracking and monitoring data you will really enjoy the customizable dashboard. Also as a note they also sell a hub to connect all of your monitors( if you were to have multiple) which automatically uploads data to cloud for the ability to monitor live data remotely if that were to appeal to you.

Hi, I have the Airthings mini and Airthings Wave, but the Wave Plus with it’s CO2, Radon and VOC monitors on top of everything else it reads (Temp, Humidity, Pressure) is a wonder. It is amazing to see how much the CO2 levels in my house rise and fall depending on how many people are present at any given time.

It rises so sharp I am currently looking into a HRV system to bring in Fresh air from the outside in the winter to alleviate some of these problems. Without this unit I wouldn’t have known just how bad our inside air can get when the windows are shut.

This is a must have for anyone worried about the Air Quality that their families are breathing.

I’ve had this for almost a month now and I waited to write a review. It has been so helpful in helping me determine my PM 2. 5, PM 1, and relative VOC. Specifically, it’s given me an actual measurement of how well my air purifier is cleaning the air of PM and VOC.

It’s satisfying to see my numbers go down. I sprayed Windex (ammonia) on the glass table it was sitting on, and my VOC shot up to to red really fast. The air purifier brought VOC down to green levels.

(Interestingly, only HEPA 13, which is a medical grade HEPA filter takes care of PM 1, but according to the numbers on my View Plus, the Blueair Purifier lowered my PM1 to zero even though it’s not HEPA 13.

Good to know that the Blueair Hepasilent technology works and validates my air purifier purchase). The other thing I tested was lighting three votive candles. After blowing them out, my Blue Air automatically went to moderate, then high, then moderate, to low, and amazingly, it corresponded to my View Plus green, yellow, red levels!! The Airthings View Plus has also helped me determine where my random nightly VOC is coming from.

I experimented with leaving certain windows open and closed. The View Plus is a huge plus in improving my air quality.

Small but so useful, when I got it it said replace batteries right away on the screen but found out the batteries got loose from shipping, popped them in and it works fine. It’s been 3 days since I’m using but already I noticed my air quality isn’t the best.

I also noticed that my furnace plays a roll since the bad air quality increases with the times when my furnace was on so I need to get that checked, opening the windows also showed improvement in my air CO2, pretty cool stuff.

I do find it a little pricey but so far I feel like I’m getting what I paid for. It connects via Bluetooth to my iPad and to my router via wifi without a problem, I keep checking periodically and it keeps track of the air quality over time on a graph, it’s pretty neat.

Overall, I recommend this product.

The app is super easy to navigate and gives you useful information to improve the air quality in your home. Setting it up and pairing it through the Airthings app is very simple and it takes just a couple of minutes.

My wife and I are very impressed with its features, in addition to radon, it monitors PM2. 5 particles, CO2, VOCs, humidity, and temperature. The device works really well and has given my family peace of mind.

The best air quality monitor in the market!.

Never knew radon could be in water. Packaging gave a lot of informative information. Will start testing every year.

This unit is well made and has worked flawlessly for several weeks now. The graphing function is very helpful and quickly shows the up and down swings of radon levels. Moving it from one place to another in the house is easy and the data graph can be labeled and saved for every room that has been monitored.

Then the graphs can be down loaded to a computer if needed, however, the app graphing function is very useful and downloading to a computer is optional.

I just trust the mesurements it gives. I have no way ti check it unless I buy some other tool. And also once you done with Long Term Mesurements than you don’t need it anymore. It’s expencive.

Quick (10 min) measurements, and tracking through cellphone, it allowed me to check all corners of my house in a couple of days. Now, I know where, and what time of the day, radon level gets higher. Hence I cleared up my previous concerns of staying long in the basement – peace of mind! Two thumbs up.

Radon (gas) is one of those sleeper problems. Today, most home sales require a Radon Test before a mortgage will be issued. This device will keep you informed if you have a Radon problem. I found this device well built, takes 3 AAA batteries, and my unit came with “Procells (which is the only batteries I use)” It hangs on the wall (would have been nice if they provided a screw.

) Easy to use, simple instructions, and provides a “daily” reading and a seven-day reading. You can leave it on for continuous readings (recommended by the manufacturer) – the longer it is in use the more accurate the readings become.

I would like to point out, buying this on eBay, I save nearly 50% of the retail cost.

Purchased this radon detector 3 years ago, and used it only in our homes (dry, non-humid, temperature controlled environments). I believe it worked well because it provided similar results to one-time tests.

Unfortunately, after just 3 years, the unit died (showed error codes). The manufacturer provided me with a some troubleshooting steps via email, but none got it to start working again; they admitted it has simply failed.

Ultimately, even after asking for a replacement several times, they confirmed twice that all they could offer is a 35% discount. That is really disappointing, it means a new unit will still be at least $130 ship tax.

In summary, I give the product one star for function (accuracy/ease) and another star for responsiveness (to emails) by the manufacturer. However, I deduct a star for poor quality (dead in 3 years yet very expensive at $200 for such a small electronic device), I deduct another star for the manufacturer not standing behind its product (suggesting to purchase a new one clearly indicates they believe the expensive unit’s failure after a few years is normal), and finally deduct another star for the manufacturer’s inability to provide a fair solution (35% coupon in this case is laughable).

Unless you are ok with the above scenario, suggest to look elsewhere.

We’ve owned our home for over 10 years and have done radon tests when purchasing and had inconclusive results. I thought it would be a great idea if someone came out with a digital product that could accurately tell you how much radon is in the house at any given time.

I’m so happy (and a bit frightened) Airthings has developed a consumer friendly, and Wi-Fi connected device that samples the air and gives you tangible results. Well, you won’t get instant gratification out of it though, as it needs a week to calibrate its sensor to the ambient surroundings.

And after its calibrated, you should get at least a month’s worth of data before you take any action to mitigate or not. The unit is small and plain enough to be mistaken for a thermostat at first glance.

Then you notice the e-ink display which saves battery, or batteries, 6 AA to be exact. Strange that they give you alkaline batteries, then supply you with a USB cable. Setup was quick once you get the app, get it connected to Wi-Fi, and set the region.

It measures radon in picocuries per liter or pCi/L, sampling once per hour. Airthings also makes commercial units that use 4 sensors, sampling 4 times per hour, getting results much quicker. You can pass your hand across the face of the unit to trip the proximity sensor and a red, yellow, or green light above the display will indicate whether the current level is safe or not.

That part is silly considering the screen is always on showing the current amount of concentration. Once you turn it on, it takes an hour to give the first reading which starts from zero and, in my case, climbs steadily.

The level rises and falls depending on the time of day and whether or not the air handler is running. Sadly, the frightening part is that after a week, my average is above 4pCi/L and therefore in danger territory.

It may have been this way for some time and we didn’t grasp the scope of it. Needless to say, I will be investing in an active radon mitigation system in the near future. Airthings has a very unique and exclusive market with a product like this.

Not only does it test radon levels, but you also get accurate humidity and temperature readings that are stored and accessed using the app. It stores over a year of information collected. The USB cable connects to the back of the unit and turns it into a hub for other Airthings devices which ties everything together.

Using an e-ink screen allows them to use disposable batteries since you’d only need to charge once every 2 years, not much convenience there. Anything that allows you to observe potentially harmful things around you is a must have device.

Upgrading from the View to the View Plus adds total VOC and Co2 measurements. Either one does the job and is worth having sooner than later.

This product is aesthetically pleasing to the eye, it’s discreet and very user friendly. Right out of the box just install batteries into the unit download the app and let the device work. As time goes by the unit gathers information about the radon levels in the area being tested.

You can then either wave your hand in front of the device to get a quick reference of the air quality or view the gathered information on the app. The unit is a very quick and easy method for an individual to check Radon levels in their dwelling.

Very inaccurate device. I compared it with professional machines by a reputable company and this device is inaccurate by 60% (both devices were sitting side by side 1. 5 ft apart for 3 days). We had a radon mitigation system installed and as part of the process they will measure the radon before and after (this gave me the opportunity to compare results with Airthing and the other professional system).

If you want to just feel good abt monitoring then buy it but the data it produces is useless. Save your money and just live with radon or use the $150 to mitigate it instead.

This product was very easy to set up, it took less than 5 minutes to get connected. The device calibrated within a week. The product measures radon, humidity and the temperature in that room and will send you notifications if the levels are too low or high.

It’s the size of a smoke detector and you can easily place it anywhere. We installed ours in the basement and had low levels of radon but found out our humidity was high so we have worked to manage that.

I recommend this product if you are concerned with radon or humidity in your home!.

The product is very simple to use. It only took me a few seconds to download the app and connected to the unit. It installs pretty much anywhere with a single screw. I mean you could probably set everything up blindfolded if you really had to that’s how easy it is.

The only thing that I don’t like about the product is it gives you an accurate representation of the air quality in your home so when you actually assumed that your air quality is good and it turned out not to be nearly as good as what you thought, that could be a little bit distressing.

I purchased the Safety Siren Pro Series 3 radon detector on recommendation of a site that said it was the best among five meters reviewed. So far I’m pleased with its performance. I first used it to test radon in my finished basement, first-floor kitchen, and second-floor hallway.

All the readings were taken over at least three days. To my surprise the basement and other indoor readings were 1. 2 to 1. 4 pCi/liter. I had earlier thought radon could accumulate only in a basement.

I then placed the meter outside for three days and it read 0. 3 to 0. 4, nearly the same as what EPA says is typical for outdoors. So the outdoor reading supports accuracy of the meter.

This Meter/Monitor is a great tool. We’ve done some initial Radon testing with long-term test kits submitted for laboratory analysis – The result in one of our partially subterranian rooms this winter was 8.

9 pCi/L. Since we wanted to try several Radon reduction/ mitigating techniques and know the results in days rather than months, I ordered the SafetySiren Pro Series 3 digital readout Meter after seeing the Reviews showing that nearly all buyers of this unit were pleased.

While still winter, our initial reading in the same area in the room on this digital readout Meter was 8. 4 pCi/L; this was most likely lower than before because we have been making an effort to open the window more often.

To initially clear the air in the room, I opened the window and door in the room and ran a fan to blow air (and Radon) out the window for a few hours. The Meter updated values displayed hourly and beeped until the Radon level fell below 4 pCi/L.

We will try a few different ventilation techniques in the room over a period of time to see what works best without requiring excessive power consumption, noise, drafts, etc. I was pleased to find that the direct plug-in power supply provided and used with the Meter is UL Listed.

I fully agree with most of the valuable comments made by Gus T on 1/6/2010. Here are the key comments of his which were most useful to me: “This is a great investment and worth every penny. The only real complaint I had was that the manual should have made a couple of things a little more clear.

I read reviews where some complained about no battery backup, so people thought the unit would have to start over if they lost power, but the unit will actually retain the reading in memory until it regains power, so thats good enough for me.

Also, if it goes to 4. 0 or above at any time, the LED will be lit up beside (L) long term and won’t switch over to (S) short term until radon levels are below 4. 0. Again this is no big deal and they did this on purpose, but it would have beeen nice if it was made clear in the manual.

The unit is made in the USA up in MI, which is also good. Go ahead and get one. ” After we get this room’s Radon level under control, we plan to move the Meter to the next room which reached 7 pCi/L when we measured with a long-term test kit.

In the meantime, we’re ventilating that room much more than before. Once that room is taken care of, we plan to offer/loan the Meter to my brother-in-law to check his home as well.

The radar detector works as advertised. I bought it for two reasons. One, the kits end up costing around $50 each because of the lab costs and they can only be used once. Two, I wanted to make measurements at several locations in my basement and attached crawl space to make a survey of the gas levels.

The detector enables me to do this. I will provide this survey to the contractor installing the radon exhaust system. I will then use the detector to ensure the exhaust system is effective. My only concern with the detector is that it only has a one year warranty.

I don’t understand the method of detection so I have no idea how long it should normally work. It would be informative if the sales literature discussed the detection mechanism and specified a nominal working life for the detector.

I have been highly impressed with this kit from Airthings. My main concern is radon in my house and especially my basement where my 2 of my kids sleep. This easily monitors that, humidity and VOC. The set up is surprisingly very easy.

I downloaded the app and put my monitors at breathing level, not near any vents or windows. Then they start checking for containments. This set comes with two monitors and sends all the information right to your phone via the app.

The readings are super simple and the monitors display a color for the level of “air health” Overall, I feel this product is made very well and setup and readings are super simply and very streamlined right to your phone.

The biggest pro is the peace of mind it gives me especially with radon in my basement. The more I read up on radon the more I knew I needed some kind of detection kit. 5 Stars all the way for this kit! It’s all you need and very easy to use.