Watersafe Short-Term Ionization Radon Test Kit

Last updated date: March 12, 2023

DWYM Score

9.4

Watersafe Short-Term Ionization Radon Test Kit

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We looked at the top Radon Test Kits and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Radon Test Kit you should buy.

Update as March 11, 2023:
Checkout The Best Radon Test Kit for a detailed review of all the top radon test kits.

Overall Take

Unlike other quick radon test kits on the market, this option has no separate lab fees. It's EPA-approved and easy to set up in any home that you have your eye on. A set of directions with illustrations is provided and once the sample is submitted, you'll receive results in as little as three days.


In our analysis of 12 expert reviews, the Watersafe Short-Term Ionization Radon Test Kit placed 1st when we looked at the top 8 products in the category. For the full ranking, see below.

From The Manufacturer

RADON TESTING KIT TO KEEP YOUR HOME SAFE: Detect and address elevated levels of radon gas in your home before it becomes health-threatening. This home radon test kit contains activated charcoal and an EPA-approved lab test – everything you need to quickly detect radon gas. EASY & QUICK TO SET UP GAS DETECTOR: RadonScreen radon test kit for home is an easy, fast, and accurate radon gas detector – a crucial first step in radon mitigation and indoor air quality monitoring. Follow the simple and instruction sheet and leave the radon detector exposed and undisturbed for just 48-96 hours. NRPP-CERTIFIED LAB ANALYSIS AT NO EXTRA COST: This RadonScreen radon home test kit includes all EPA-approved laboratory analysis fees with your purchase. Just insert the radon detector into the included return envelope, pay for and apply postage, and ship to our lab for quick results turnaround. Note: a $10 regulatory fee is required in New Jersey. MADE IN THE USA; QUICK RESULTS TURNAROUND: Get your results of these within 3-5 business days after we receive your radon gas detector at laboratory. These radon test kits are EPA-approved and proudly researched, developed, and manufactured in the USA. WHY SHOULD YOU TEST YOUR HOME? Radon gas in the household is a large cause of lung issues every year in the United States among non-smokers. It is important to know that this threat can be detected using just a SIMPLE, QUICK AND ACCURATE radon gas detector.

Expert Reviews

User Summarized Score

8.2
174 user reviews

What experts liked

What experts didn't like

An Overview On Radon Test Kits

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. Some companies actually provide their customers with a prepaid mailer to make returning the sample a breeze.

Consider the length of time required to collect the radon sample. Some options only need 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. Some companies opt to have their samples analyzed by an NRPP-certified US lab. This lab has been successfully conducting these tests since 1983.

The Radon Test Kit Buying Guide

  • 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.