Generac’s new LP5500 is an LP-powered portable generator that holds a 20- or 30-pound fuel tank. A “PowerDial” mechanism at the top of the housing puts all of the starting and operating controls in one place. The dial has three positions — one to prime the engine, one to run the generator, and one to stop the unit. The priming bulb is integrated into the dial. Runtime is 4.75 hours on a 20-pound tank. The generator costs $800. Unlike gas, LP fuel can be stored indefinitely without deterioration.

Generac, 888/436-3722,

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