Free Radon Test Kits

The most popular radon kits at unbeatable prices! All included - no additional charges. You can even get one for free!

Approved by the U.S. EPA
Made by the world’s largest producer of radon testing kits
Top-rated by a leading consumer product testing group
FREE laboratory analysis (save $15 compared to stores)
FREE certified report online and by e-mail (same day!) and by mail
FREE shipping by mail throughout the US, pre-paid return mailer for air test kits (not radon-in-water kits)
Optional shipping by Priority Mail (delivers in 2-3 days)

We repeat - there are NO ADDITIONAL CHARGES for testing, the report, shipping or otherwise. All is included.

How to get a radon test kit for free!

Get a $14.95 rebate if you purchase at least one 5-gal. pail of RadonSeal Deep-Penetrating Concrete Sealer within two months after purchasing the radon test kit(s). Just send the attached Refund Coupon or email us. If you do purchase both on the same day, the rebate is issued automatically within a day. Radonseal permanently deep-seals concrete against radon, water seepage and vapor.

How to Get a Radon Test Kit for below $15

Radon Test Kits	Price
short-term (4-7 days) - charcoal	$14.95
3-pack of short-term kits	$36.00
long-term (3-12 months) - alpha track kit	$25.95
radon-in-water kit	$24.95

Sorry, no shipping to New Jersey.
Extra for mailing to Canada: $1.50/short-term kit or $4.50/3-pack and other kits.

When using short-term radon test kits, EPA recommends two side-by-side test kits for each location for most reliable results.

Express Turn-Around Time

Returned test kits are normally tested the same day they arrive to the laboratory. And the certified report is mailed, posted online, and sent by e-mail also the same day.

To avoid possible delays when returning the kits, return the test kits to the lab by Priority Mail or by courier instead of using the included pre-paid return mailer. This is strongly recommended for Canadian customers.

And instead of waiting for the test kits to arrive by mail (usually within a week), you can choose our Priority shipping option (for the U.S. only):

Shipping by Priority Mail

Priority Mail usually delivers in 2 to 3 days. The extra cost is $4.45 per short-term test kit and $6.85 per 3-pack, long-term kit, or radon-in-water kit.

Are short-term test kits worth it?

Radon levels fluctuate wildly and a short-term test is just a snapshot. Some argue that short-term test kits are worthless. Find out more at short-term vs long-terms radon test kits and what a homeowner should do.

About radon gas

Radon is an invisible radioactive gas produced by most rocks and soils. It is a single-atom gas whose atoms easily penetrate through openings in foundations and pores in concrete, paints or surface sealers, and even most plastics.

Radon gas is a very potent carcinogen and children are particularly susceptible. It is the second leading cause of lung cancer, which is the leading killer among cancers.

Radon testing of all homes

Elevated radon levels have been found in every state. EPA recommends radon testing of all homes. Radon testing is essential before putting a house on the market to allow time for radon mitigation and before buying a house or basement remodeling.

If you have a private well, test the radon level in your water with our radon-in-water test kit. Showering, cooking, dishwashers, and washing machines release radon gas into the air. As a rule of thumb, each 10,000 pCi/L in water contributes 1 pCi/L to indoor air.

Repeat the radon test once a year!

Concrete becomes more porous over time, joints or cracks open up, and underground flows of radon shift. Whether or not you have a radon mitigation system, your radon level might increase dramatically. Radon test results are considered invalid after two years. EPA recommends that homeowners repeat the radon test regularly.

Test the radon level in your home about once a year! Radon test kits are inexpensive and your family’s health is at stake. Since radon levels fluctuate depending on weather and season, long-term test kits provide a more reliable result.

There is no "safe" radon level

EPA's recommendations to homeowners:

If your radon level is 4 pCi/L or higher, fix your home.
If your radon level is 2 pCi/L or higher, consider fixing your home.

However, EPA warns that there is no "safe" radon level! The vast majority of radon-induced lung cancers occur in homes with radon concentrations below the 4 pCi/L "Action Level." The Radon Act has set the target radon level in homes at 0.4 pCi/L.

If you just settle for 4 pCi/L, your home will be more radioactive than 94% of U.S. homes. The lung cancer risk to each member of the family increases by 50 percent and is equivalent to smoking 8-10 cigarettes a day.

Radon mitigation options

Reduce radon in your home to a "reasonably achievable minimum." You can get a fan-based radon mitigation system, which exhausts the heavy radon gas above the roof. Or you can avoid the noisy radon fan and unsightly piping by sealing the basement using the RadonSeal radon mitigation method. It saves lots of money and does not depend on the the reliability of the equipment or the power grid.