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The Best Radon Test Kit - 2021

Last updated on September 12, 2021

We looked at the top 6 Radon Test Kits and dug through the reviews from 12 of the most popular review sites including and more. The result is a ranking of the best Radon Test Kits.

Best Radon Test Kit

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Our Picks For The Top Radon Test Kits

Show Contents
Our Take
Experts Included
Pros
Cons
  Portable Pick

Airthings Corentium Home Radon Test Kit

Don't Waste Your Money Seal of Approval

Airthings

Corentium Home Radon Test Kit

Overall Take

Battery-Operated OptionThis radon detector is highly portable, since it doesn’t need to be plugged into an outlet to use.

Experts Included
DWYM Tools Experts plus Alarm New England, Spy, CompetentReviews, Wiki EZ Vid, CNET, Top 10 Beasts Pro and 1 more. Along with user reviews from Amazon and Home Depot.
Pros
" Its portability allows you to conveniently monitor radon levels in various locations"
Cons
"This product won’t alert you if the radon levels are too high, so you’ll need to know what to look for."
  Best Overall

First Alert RD1 Radon Gas Test Kit

First Alert

RD1 Radon Gas Test Kit

Overall Take

Accurate ResultsIf you're looking for a radon test kit that delivers fast results, this model is your best bet.

Experts Included
DWYM Tools Experts plus SafeWise, BestReviews. Along with user reviews from Amazon and Walmart.
Pros
" Tests in 48 hours, EPA-approved"
Cons
"Home test kit does not include return shipping fee"
  Runner Up

Health Metric Radon Test Kit

Health Metric

Radon Test Kit

Overall Take

Easy to UseUnlike other radon test kits that take up to seven days, this kit only has to sit out for 48 hours.

Experts Included
DWYM Tools Experts plus . Along with user reviews from Amazon.
  We Also Like

AccuStar Charcoal Radon Gas Test Kit

AccuStar

Charcoal Radon Gas Test Kit

Overall Take

Quick Turnaround TimeThis radon test kit provides accurate results in a short amount of time.

Experts Included
DWYM Tools Experts plus BestReviews. Along with user reviews from Amazon.
Pros
" Easy and quick to set up in a single setting. Generally has fast results from a lab with good customer service and communication"
Don't just take for granted what one reviewer says. Along with our own experts, DWYM analyzes the top expert reviews of the leading products and generates a score you can actually trust.
13

Products Considered

We identified the majority of the radon test kits available to purchase.
6

Products Analyzed

We then selected the leading and most popular products for our team to review.

View All Product Rankings

12

Expert Reviews Included

In addition to our expert reviews, we also incorporate feedback and analysis of some of the most respected sources including: Alarm New England, Spy, CompetentReviews, Wiki EZ Vid, CNET.

18,310

User Opinions Analyzed

We also incorporate user reviews from the leading retailers including

Our experts reviewed the top 6 Radon Test Kits and also dug through the reviews from 12 of the most popular review sites including and more. The result is a ranking of the best of the best Radon Test Kits.

DWYM is your trusted roduct review source. Our team reviews thousands of product reviews from the trusted top experts and combines them into one easy-to-understand score. Learn more.

Don't Waste Your Money Seal of Approval
Look for the DWYM seal for products that are the best in their category.

The Best Overall

Airthings Corentium Home Radon Test Kit


Our Expert Score

9.7
7 expert reviews

User Summarized Score

9.2
2,283 user reviews

Our Take

Ideal for taking to new construction sites or areas without electricity, this detector is battery-powered. It generates results within 24 hours and you won’t have any lab fees. It’s ideal for long-term monitoring as radon levels fluctuate daily.

What other experts liked

Its portability allows you to conveniently monitor radon levels in various locations
- Alarm New England
This radon detector is lightweight and doesn’t require an outlet, so you can place it anywhere in your house. The product is designed for accuracy.
- Spy
This radon detector makes it easy to generate a radon report by yourself.
- CompetentReviews
The LCD shows the average daily, weekly, and long-term concentrations clearly, and it is perfect for property inspections.
- Wiki EZ Vid
It's a handheld, battery-operated device with a simple digital display and can perform both individual readings as well as long-term monitoring (radon levels fluctuate randomly over time, so long term observations are needed to give you an accurate picture of...
- CNET
It comes with an easily readable display which gives you the accurate readings of both short-term as well as long-term.
- Top 10 Beasts Pro
This unit also provides easy interpretation of the results given that you can see the readings through its LCD display.
- Pass Tools

What other experts didn't like

Unable to export and transfer data to a PC or other devices
- Alarm New England
This product won’t alert you if the radon levels are too high, so you’ll need to know what to look for.
- Spy
No audible alarms
- CompetentReviews
It has no Bluetooth or Wi-Fi connectivity, for example, so it can't upload your data to a phone or to the cloud.
- CNET
For the home unit, you need to use it for at least a week to get the accurate results.
- Top 10 Beasts Pro
It is quite pricey.
- Pass Tools

The Best Bang For Your Buck

First Alert RD1 Radon Gas Test Kit

Our Expert Score

9.0
2 expert reviews

User Summarized Score

8.3
2,720 user reviews

Our Take

It's a good idea for every home to routinely have the radon levels checked, as radon is known for causing cancer. This kit is extremely easy to use and provides accurate test results within 72 hours of the company receiving your sample. Lab fees are included in the price, with the exception of New Jersey residents, who will need to pay a small fee.

What other experts liked

Tests in 48 hours, EPA-approved
- SafeWise
Price includes lab fees for testing the material once the kit is completed
- BestReviews

What other experts didn't like

Fees differ for New Jersey residents, Lab fees required
- SafeWise
Home test kit does not include return shipping fee
- BestReviews

Overall Product Rankings

Airthings Corentium Home Radon Test Kit

1. Airthings Corentium Home Radon Test Kit

Overall Score: 9.4
Reviews Included: 10

First Alert RD1 Radon Gas Test Kit

2. First Alert RD1 Radon Gas Test Kit

Overall Score: 9.4
Reviews Included: 6

Health Metric Radon Test Kit

3. Health Metric Radon Test Kit

Overall Score: 9.2
Reviews Included: 2

AccuStar Charcoal Radon Gas Test Kit

4. AccuStar Charcoal Radon Gas Test Kit

Overall Score: 9.1
Reviews Included: 2

AirChek 43237-2 Charcoal Radon Test Kit

5. AirChek 43237-2 Charcoal Radon Test Kit

Overall Score: 8.0
Reviews Included: 1

Kidde 442020 Radon Gas Detection Test Kit

6. Kidde 442020 Radon Gas Detection Test Kit

Overall Score: 7.3
Reviews Included: 5

Our Radon Test Kit Findings


First Alert RD1 Radon Gas Test Kit

What We Liked: It’s a good idea for every home to routinely have the radon levels checked, as radon is known for causing cancer. This kit is extremely easy to use and provides accurate test results within 72 hours of the company receiving your sample. Lab fees are included in the price, with the exception of New Jersey residents, who will need to pay a small fee.


Health Metric Radon Test Kit

What We Liked: All you need to do to use this radon test kit is place the sample in an undisturbed location on the lowest level of your home and wait 48 hours. After two days have passed, you can place the sample in the provided packaging and send it off to the lab. A detailed analysis will follow as soon as the lab processes your sample.


AccuStar Charcoal Radon Gas Test Kit

What We Liked: If you’d like to screen your home for radon, this radon test kit is a good buy. It comes in a high-quality tin can and is super easy to use. Certified results are provided quickly, so you won’t be left to wonder about the potential radon levels in your home.


AirChek 43237-2 Charcoal Radon Test Kit

What We Liked: Whether you want to check out your current home or a home you’re considering for purchase, this radon test kit has you covered. It contains granular activated charcoal for reliable results. The kit also includes a prepaid mailer, so you won’t have to worry about any shipping costs.


Kidde 442020 Radon Gas Detection Test Kit

What We Liked: Determine whether any radon gas is seeping into your home with this easy-to-use radon test kit. Inside the kit, you’ll find an activated radon sampler tray and a return mailer. Once your sample has been processed, you’ll be sent a professional analysis with directions for any further required next steps.

Our Radon Test Kit Buying Guide

Radon gas is dangerous because it’s colorless, odorless and tasteless. It is reported as being the second leading cause of lung cancer, with smoking coming in at number one. The only way to know if radon gas is present in your home is to test for it. Fortunately, you can purchase a radon test kit online and conduct the test yourself.

Look for a radon test kit with an all-inclusive price. Otherwise, you’ll need to add a lab fee and shipping costs to the price of the test kit. The AirChek Charcoal Radon Test Kit is one such kit that doesn’t charge any additional fees. It provides its customers with a prepaid mailer to make returning the sample a breeze.

Consider the length of time required to collect the radon sample. The AccuStar Charcoal Radon Gas Test Kit only needs to sit out between 48 and 96 hours. There are other models that require you to leave them out for as long as seven days.

Review how long it takes the lab to email your results once they receive your sample. The First Alert RD1 Radon Gas Test Kit offers one of the fastest turnaround times of just 72 hours. Some labs state three to five working days for results, while others don’t even provide a return time range.

Research the lab associated with the radon test kit. You want to make sure the results you get are accurate. The Health Metric Radon Test Kit has their samples analyzed by an NRPP-certified US lab. This lab has been successfully conducting these tests since 1983.

DWYM Fun Fact

Radon is a radioactive compound that is found in soil and rocks, including the soil and rocks underneath and surrounding your home. The Environmental Protection Agency (EPA) reports that 21,000 of all lung cancer deaths are a direct result of radon.

January is National Radon Action Month. The EPA takes advantage of this month to bring awareness to homeowners. Radon does not discriminate based on home type or the area of the country in which you live. Approximately 1 in every 15 homes has radon levels that rise above the normal level. This is why it is so important that every homeowner take the time to have their living space tested.

The Radon Test Kit Tips and Advice

  • For the best results, you need to set up your radon test kit only after the indoor temperature of your home is set to a consistent 70 degrees Fahrenheit.
  • Choose a testing location for your radon kit. You need to place it on the lowest level of your home in a room that does not receive a lot of humidity. A den, bedroom or family room is a much better choice than a kitchen or bathroom. Damp basements should also be avoided.
  • Set the radon test 20 inches above the floor and close all the windows and doors. It is important that you don’t use any fans or devices that could bring outside air into the room that’s housing your test.
  • Avoid testing on days when storms or high wind are expected.
  • Let the radon test sit undisturbed for the designated amount of time listed in the product directions. This is typically anywhere between 2 to 7 days.
  • Collect your test kit once the time is up and immediately place it in the mailer and send it off to the lab.
  • Most radon test kits do not collect any lab fees; however, the state of New Jersey requires residents to pay a nominal fee to have their samples tests.
  • If the radon levels come back as elevated, you may be able to correct the issue using sealants and other low-cost products. It’s also possible that you may need to purchase a radon mitigation system, which will reduce the amount of radon in your breathable space.
  • You can visit the Environmental Protection Agency’s website for the organization’s most current radon testing guidelines.
  • If cost is a consideration in your decision, you’ll find radon test kits are available in every budget. The AirChek Charcoal Radon Test Kit and the First Alert RD1 Radon Gas Test Kit are extremely affordable, while the AccuStar Charcoal Radon Gas Test Kit has a more moderate price. The Health Metric Radon Test Kit has the highest price tag of the bunch.

About The Author

Alicia Bodine
Alicia Bodine 

Alicia Bodine is a New Jersey-based writer specializing in finance. With more than 15 years of experience, her work has appeared in leading financial publications. She's also a financial coach and mother to two daughters. When she's not writing, you'll find her gardening, spending time with her kids, cooking in the kitchen or playing with her two kitties, Flitter and Otter. Alicia loves researching the latest and greatest gadgets, products and items that help her save time, energy and money.