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The Yamaha EF4500iSE is a 4,400-watt running / 4,500-watt peak gas inverter generator with electric start and a built-in CO sensor that shuts the unit down when carbon monoxide builds up. It is quiet for its class at 53-60 dBA, and Smart Throttle trims engine speed to load for better fuel economy and lower noise, running up to 19 hours at quarter load on one tank. At 194 pounds it is a heavy unit, so it suits RV owners and home backup users who can leave it in place or move it on wheels rather than carry it. Against smaller inverter rivals it offers more simultaneous power for an RV air conditioner plus a microwave, at the cost of weight and portability.
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The Yamaha EF4500iSE is a gas inverter generator rated at 4,400 W running and 4,500 W maximum. It weighs 194 pounds.
It can run an RV air conditioner, a microwave oven and other loads at the same time. Smart Throttle improves fuel efficiency and reduces noise. On a tank of gas, it runs up to 19 hours at 1/4 rated load.
The generator is designed to be acoustically sound and runs at 53 to 60 dBA.
