Restroom Trailer for Winter 2026: Heater Power Draw?

A two-stall restroom trailer's heating system typically runs on standard 120V household current and draws between 10 and 15 amps. You need to size your generator for the total load, which includes the heater, interior lighting, and the water pump.

The heater is the main power consumer. On a cold January night, it will cycle on and off to maintain temperature, but you must plan for the maximum draw when it is running continuously. Add the power requirements for the lights and pump, which are minimal but constant. A generator with a continuous output rating of at least 3000 to 4000 watts should provide a safe margin for a unit of this size. Confirm the exact amperage with your rental company, as models vary.

For your event, the two-stall trailer is a good fit for 100 guests over six hours with alcohol served. The heating system is essential for winter use to prevent the fresh water tank and lines from freezing. Ensure the generator has enough fuel capacity to run unattended for the entire event duration, including setup and breakdown time. The level ground gravel area you described is ideal for placement.