Article reference KA-02358
Applicable to models: QM050RF, QM070RF, QM100RF, QM125RF, QM150RF, HSDHHR050, HSDHHR070, HSDHHR100, HSDHHR125, HSDHHR150
Covers Quantum RF Series G6, G7, G8, G9 and Series Y
Answer: The Quantum RF heaters when just the fan and screen are on, use 14 watts of power (at 230v). The fan will cycle on and off to regulate room temperature, as it blows air through the core of the heater, expelling the heat from the bricks into the room in a controlled way.