To control a heating unit by a wireless signal even while suppressing an increase in cost by diverting a cellular phone as a remote controller without using a separate remote controller.

The heating unit 1 is provided with a heating source 11 and is arranged indoors. The heating unit 1 is also provided with a wireless receiving part 15 receivable an instruction at least about operation and stop by a wireless signal. The cellular phone 2 is provided with a wireless transmitting part 25 for transmitting a wireless signal and operates as a remote controller fitting the heating unit 1 by being operated according to an application program stored in a storing part 21. Also, the cellular phone 2 accesses a center device 3 through the Internet NT while the center device 3 transfers an application program to the cellular phone 2 through the Internet NT.