Yamaha EF1000iS Portable Inverter Generator Review

In our Yamaha EF1000iS portable inverter generator review we found good cause to believe this makes the perfect light camping partner. This CARB-compliant Yamaha inverter generator is perfect for families and small businesses that are looking for a low-cost and low-maintenance generator unit. Purchasing this device is a practical choice because it would not hurt your budget. In fact, it’s half the price of other inverter generators that are designed to power up multiple high frequency appliances. If you’re looking for a dependable and durable generator but you’re on a tight budget, you better get the Yamaha EF1000iS.

This device will impress you with its long-lasting energy life of up to 12 hours, supplying your electric appliances with uninterrupted power! Read on to find out the features of Yamaha EF1000iS and why you should consider buying it.

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Yamaha EF1000iS Portable Inverter Generator Photos

Yamaha EF1000iS Inverter Generator

Yamaha EF1000iS Inverter Generator

Power Capability

Considering the cost of this inverter generator, the AC Output of Yamaha EF1000iS is quite remarkable at 900 to 1000 watts. The AC Current at 120 volts is 7.5 to 8.3 amps. The quality of its engine is far from inferior. EF1000iS is powered by a single cylinder, air-cooled, 4-stroke engine that can function continuously for 12 long hours without the need of fuel refill. This portable generator creates Pulse Width Modulation (PWM). The pure sine wave voltage is stable at ± 1% while the frequency stability is at ± 0.1 HZ. The clean and unimpeded power supply can pump up your radio, computers and other electronic devices that are sensitive to inconsistent electricity flow. EF1000iS with a max 1000 W AC output is also a perfect power source for your vehicles.


Probably, the best feature of this particular inverter generator is its extreme light weight. You wouldn’t believe a generator can weight this light! Carrying the EF1000iS is no hassle for adventurers and travellers who want to camp out. It only weighs 30 pounds at a body frame of 17.7 in x 9.4 in x 14.9 in (length, width, height). It may even be smaller and lighter than any of your camping gears.

Safety, Fuel Efficiency, Sound Reduction

The Smart Throttle technology inside Yamaha EF1000iS provides safety to its purchasers. Imagine how much peace of mind it will give you knowing that the engine of your generator adjusts its speed according to requirement of the load. This feature saves up gas and increases fuel efficiency.

You can also find a number of lights indicating the possibility of overload and the oil condition of the generator. There’s a switch for the economy control setting. If you plan to use it at home, you can let it run at your preferred speed without getting disturbed by an irritating noise that some generators create. Yamaha EF1000iS works at only 57 decibel. In a camping trip, you can run it on full load and the device will remain quiet.

Buy Now: Yamaha EF1000iS (Check Price on Amazon)

An Economical Choice

Of course, you don’t expect EF1000iS to run your whole house or power up everything in your trailer so you have to consider the load capacity of the device. But if you’re looking for an inverter generator that can give you just enough power supply for your overnight camping trips or some electrical devices at home, you cannot go wrong with this silent and portable Yamaha EF1000iS that costs less than a thousand dollars.