What are you looking to power? If AC(s) do you have a 15,000 BTU or 12,000 BTU? you would need at least a 6,000 watt (run wattage not surge) generator to power a 15,000 AC 2 ACs would require a 10,000 to 12,000 watt generator. You need to look at the running watts of the generator and not the surge wattage, often times today they call generator by the surge (peak) watts and not the running watts. The AC, and hot water heater will require the most wattage. The inverter generators are lighter for the same wattage.