You might be surprised to learn that bouncy castles don't actually need electricity to work. They're inflated using a special pump that's powered by either a gasoline engine or an air compressor. The pump forces air into the castle, and the pressure of the air is what keeps the castle inflated.nnAs long as there's enough air in the castle, it will stay inflated indefinitely. However, if there's a hole in the castle, or if the air gets too cold, the castle will start to deflate. That's why it's important to have a reliable pump on hand to keep the castle inflated. So, while bouncy castles don't need electricity, they do need a good pump to keep them going.