PURPOSE: To avoid giving an unpleasant feeling to the user of the air conditioning apparatus by a method wherein the distribution of the room temperature is made uniform by transmitting wirelessly to the apparatus a signal indicating the room temperature around the user of the apparatus, with as accurate variations as possible, to thereby control the room temperature.

CONSTITUTION: A temperature detecting type oscillator 2 having a frequency variable with respect to the room temperature is made portable by setting the oscillator 2 at a place near the user of the air conditioning apparatus. Further, a frequency signal generated from the oscillator 2 is received by a receiver provided on the side of the air conditioning apparatus and is then inputted to a resonance frequency detecting circuit 11 where the signal is compared to a room temperature setting signal. As a result, a proper signal is applied on a control circuit for controlling a fuel feed valve drive section 15 to open the valve so that the valve is kept open until a set temperature is detected.