A system may include construction of observation vectors based on a plurality of power samples indicating past power consumption of a device and a plurality of temperature samples indicating past temperatures of the device, determination of an estimated temperature of the device based on fuzzy reasoning models comprising the observation vectors and a fan control parameter vector; measurement of a temperature of the device, determination of an error based on the estimated temperature and the measured temperature, and adaptation of the fan control parameter vector using a recursive least squares algorithm based on the error. The fans may be controlled based on the fan control parameter vector.