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How To Prepare For A Radon Test

Radon Services

Closed House  Conditions

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.

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