It is not possible to recalibrate the temperature sensor. It is sensitive to recirculation if there is anything (or anyone) directly in front of the unit. The Gradient does not have a remote temperature sensor (i.e., across the room), so this sensor measures the temperature directly adjacent to the unit. Please note that the sensor more accurately senses the temperature of the room when the fans are on. For this reason, the system uses a fan sampling algorithm to periodically turn on the fan and test the room temperature.