Author: steveng Your Xtreme Heater will not operate during power outages. Short power outages should not affect your boat as it takes a bit of time for the warm components to chill down to freezing temperatures. Your Xtreme Heater will simply resume operation when power is restored. If the power is expected to remain out for an extended period, you should be prepared to winterize your boat in traditional fashion, according to the manufacturer’s instructions. Was this answer helpful ? Yes (0) / No (0) Is it ok to set my heater on the floor and not put in the screws? How does it get power and what power source do I use?