How to Test for Radon

Radon is a naturally occurring radioactive gas that is the second leading cause of lung cancer. You cannot smell or taste radon, so it can be in your home without your knowing it. The only way to know if radon is in your home, is with a test. There are two kinds of tests: short term and long term. Radon levels change daily and seasonally, so a long term test is best. But a short term test will help you quickly know if there is a danger in your home and help you decide whether you need to follow up with a long term test. If you find that radon is present, you can cheaply install a radon reduction system to keep your family safe.

Difficulty: Moderate

Instructions

1. Go to the hardware store and choose a short term (2 to 90 day) test kit.

2. Close the windows and doors at least 12 hours before you plan to begin the test. It is fine to use fans and AC to circulate air within the home. But minimize the exchange of air from outside and inside the home.

3. Plan the test for a time period when it is unlikely for there to be a high winds or storms.

4. Place the test kit in the lowest inhabited area of your house. If you rarely use the basement, then place the kit on the first floor. But if people in your home spend time in the basement because it is used as a bedroom or rec room, then place the kit there. Avoid testing in the kitchen or bathroom unless you are testing the granite countertops.

5. Place the kit two feet off the floor in an area where it will not be bothered. Keep the test kit away from outside walls, drafts, heat, and humidity.

6. Leave the test kit in place the number of days specified on the package (depending on the kit it could range from 2 to 90 days). Seal up and mail in to the testing facility immediately.

7. If the tests show a radon level of 4pCi/L or more then administer a second short term radon test or a long term test. If the second test shows the same or higher levels, check with a professional to install a radon reduction system.