How do I clean the heater?

Press the power button to turn the heater off. Unplug the appliance before cleaning. Never immerse the heater in water or any other liquid. The debris screen can be removed and vacuumed. Open the screen door on the side of the unit by pulling the 2 tabs then removing the door. Vacuum any dust from the screen, if there is an extreme amount of dust on the screen, it can be removed and gently washed with hand soap. Screen MUST be completely dry before returning to the unit.