There is no safe level of radon, only reduced risk.įor non real estate transactions, consider conducting the test yourself. The EPA guideline of 4.0 pCi/l is not a safe level but a recommended level at which action should be taken to reduce your exposure. Older homes can present challenges due to compacted soil under the home. 4.0 pCi/L The USEPA action level of 4.0 pCi/L can be accomplished for virtually any home.2.7 pCi/L The World Health Organization (WHO) has revised their recommended action level to about 2.7 pCi/L.Not all homes are capable of reaching levels below 2pCi/L without major reconstruction. The USEPA recommends to consider action between 2 and 4 pCi/L. 2.0 pCi/L Most homes will fall below 2pCi/L following mitigation.0.4 - 0.7 pCi/L Average exterior Radon concentration.If the Radon Mitigation System cannot be installed in the next few weeks and the radon concentration is greater than 50pCi/L, you may consider ventilation by leaving a basement window continuously open and/or a bedroom window open while sleeping. The EPA risk chart is based on a lifetime of exposure. What About Testing After the Radon System is Installed?įree do it yourself at-home test kits are available from the Tennessee Radon Program by using the Online Test Kit Request Form or calling the Tennessee Department of Environment and Conservation (TDEC), and can be purchased from local hardware stores and .ĭangers from Radon Gas exposure are based on the amount of time exposed and the average radon level. What about Radon in my Granite Countertops? What is the seasonal effect on radon in my home? What if my first radon test is lower than the EPA's action level of 4pCi/L? How to Increase the accuracy of your at home radon test kits? Is the radon level higher in the basement? What radon practice is best - short term or long term testing?Ĭan Radon test results be manipulated to show below average readings?ĭoes a vacant house have higher radon levels? If your radon monitor results are 4.0 pCi/L or higher, contact us for a free radon mitigration estimate.At what level is Radon considered an emergency?ĭo I need a Radon Measurement Professional to test my home?Īre Continuous Radon Monitors more accurate than passive testers? If the number is a 4.0 pCi/L or higher, The EPA recommends you have a licensed radon mitigation contractor install a system to help lower the results. When choosing your location, one should avoid setting the detector directly on natural stone, as they can falsely raise your reading, resulting in an inaccurate average.Īs your averages show up, they will be displayed in a unit called pCi/L. It is also important to not move the detector during the test. Placed the radon monitor out of direct sunlight, or moisture at least 2 feet off of the ground, and at least 5 feet away from the nearest door, window, or air vent. Radon monitors should NOT be placed in your Kitchen, Bathroom, Outside, Covered Porch, or Garage. Radon monitors are best placed in your Living Room, Bedroom, Office, Furnished Basement, and Basement Bedrooms. So placing it in a living area, like a bedroom or a living room, is preferred. When placing the detector it is best to find a space that represents your normal breathing air. The longer the test sits, the more accurate the results will become. In 6 to 24 hours, it will start displaying both long-term, and short-term radon averages. This indicates that the test is now running, and the detector is now gathering information. On your screen, you will now notice two lines of flashing dashes. For your short-term test, it won’t be of much use to you.Ĭalibration will take between 45-60 seconds before dashes will appear. The mode button relates to a long term average test, which is tested over 90 days or more. So be wary of accidentally, or prematurely pressing it. It is important to note that when you press this button, it erases the information previously gathered. Use a pen or paperclip to press and hold the reset button for about 8-10 seconds or until it starts calibrating. Simply press the reset button, and the monitor will start a new test. On the back of the detector there are two little buttons labeled Reset, and Mode. So what you will need to do is reset the device, to start your test. You will notice that the monitor will either display numbers or Dashes, this is because the device constantly reads the air to deliver results. When you first open the box you will be faced with the AirThings Corentium Home Digital Radon Detector.
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