How To Prepare For A Radon Test

To ensure an accurate reading of the Radon levels in your home, we ask that you please adhere to the conditions outlined below for a full 12 hours before the testing begins, as well as during the testing process. These conditions are known as “Closed House Conditions”

• All windows should be kept closed.
• Entry doors should be kept closed, with the exception of normal entry and exiting.
• Any fans that exhaust air outdoors or bring outside air into the house should be left off. This includes high-volume attic fans, window fans, and whole-house fans. Exceptions include air conditioning systems that recycle indoor air, air-to-air heat exchangers, and furnaces.
• Any ceiling fans, dehumidifiers, or air purifiers within 20 feet of the testing monitor should not be used during or prior to the test period.
• Unless a fireplace is the primary heat source, it should not be used during the test period and the flue damper should be closed.
• If a Radon mitigation system is already installed at the house, it should be running for at least 24 hours before testing begins and continuously during the testing period.
• If the home is vacant, the heating or air conditioning should be set between 67-77 degrees Fahrenheit with the fan in AUTO mode.