Yusuuo Built-in Register Booster Fan with Cover for Air Heat Vent with Fan Fits 4""x10"" Duct/Ceiling/Floor Vents Improves AC & Heating/Cooling Quiet 10-Speed Household/Bedroom Ventilation smart Bronze

Q: Can the register booster fan be used as an air conditioner? A: No the fan is specifically designed to enhance the airflow of a traditional on/off heating or air conditioning system. Q: Is the register booster fan completely silent during operation? A: No the noise level increases with higher air speed. Please consider this factor before making a decision. Q: Is it possible to reverse the airflow of this fan? A: The fan's airflow enhancement cannot be reversed nor can the fans be flipped. Q: What temperature does the register booster fan detect? A: The fan's rear probe measures the airflow temperature of your register vent. Keep in mind that this temperature may differ from the reading on your home thermostat. Q: My fan runs continuously when not needed. How can I turn it off? A: The heating and cooling triggers may both be active. To turn off the trigger you are not using press and hold the mode button until the screen di