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A radon assessment is currently being conducted in your home/unit. During the measurement period, you are required to maintain the following closed building conditions to ensure a valid measurement:
All windows must be kept closed. All exterior doors must be kept closed, except for normal entry and exit. Windows and doors must be kept closed for a period of 12 hours prior to the device placement date and remain closed effect until the devices are retrieved.
Whole house fans must not be operated. Window air conditioning units may only be operated in recirculation mode. Portable window fans must be removed from the window or sealed in place.
Fireplaces or combustion appliances, other than water heaters and cooking appliances, must not be operated unless they are your primary heat source.
If a device is deployed at your unit or location, ceiling fans, portable air filters, portable dehumidifiers, portable humidifiers, or window air conditioning units operating in recirculation mode must not be operated within 20’ of the device.
If a device is deployed at your unit or location, the device must not be touched, tampered with, covered, removed, altered, or moved from where it is deployed. Your HVAC system must be operated in the normal range – your thermostat should not be adjusted drastically, and your fan should be set in normal mode.