Yamaha EF2000iS Reviews – See Why People Love it

By reading our Yamaha EF2000iS Reviews, you’ll find out why people love this product even till now and how it can be the best powerkit you’d ever buy!

Yamaha EF2000iS Portable Inverter generator is one of the best inverters available on the market. Because of his innovative inverter sistem, this portable invertor gives great electric output by being able to generate 2,000 watts of clean AC power.

Yamaha EF2000iS Reviews

Yamaha EF2000iS portable inverter is generating DC power as any other inverter and then transforms the DC power in AC power.

Because of this transformation, an inverter like this one will always give smoother electric power which is safer for sensitive electronics.

This portable invertor can run up to 10,5 hours in Economy mode and the fuel tank which is made from plastic can take 1,1 gallons of gas.

Yamaha EF2000iS also includes an electric overload breaker which helps you to prevent damage in case of overload.

The engine is an OHV, air-cooled, single cylinder, 4-stroke which works great to dissipate the heat to maintain the generator long life and in the same time to ensure optimal fuel consumption.

Yamaha EF2000iS portable inverter generator also uses Smart Throttle Load feature which enables the engine to adjust her speed based on the output.

Beside that this invertor has a dual coil alternator stator which helps the engine to lower the speed and reduce the fuel consumption.

This portable invertor is easy to carry, has 44 pounds and also features a centralized control panel which gives you access to different important features.

Yamaha EF2000iS portable inverter has a 8A 12V DC output where you can recharge batteries and this is why is a very good option for RV, boats and car batteries.

You can also use two Yamaha EF2000iS portable inverters by making use of the TwinTech technology.

To ensure it doesn’t make too much noise, Yamaha EF2000iS inverter is using noise reduction technologies like the noise-absorbing glass wool construction and the special sound-blocking design.

It also has a super quiet muffler and a vibration-isolating feet which will always keep the noise at lower levels.

What’s in the package:

The inverter
Cables and instructions


  • Starting and Running Watts

Yamaha EF2000iS portable inverter has a wattage peak on 2000 watts and it runs with 1600 watts. The nice thing about this portable inverter is that the output will be based on the load.

  • Engine Horsepower

The engine is 79cc OHV, air-cooled, 4 strokes with a single cylinder and because of the great heat dissipation the fuel consumption is always low.

  • Running Time

Yamaha EF2000iS portable inverter generator can run for up to 10,5 hours at 50% load with each full fuel tank.

The fuel tank is made from plastic and it has 1,1 gallons.

This is great for such a small generator which can run your appliances when needed.

READ MORE: Champion Power Equipment 46565 Portable Generator Review

  • Outlets

As already discussed, Yamaha EF2000iS gives DC power which then is transformed to AC power and because of this transformation the AC power is more cleaner and safer for sensitive equipments like computers.

This inverter has the following outlets:

2 x 12Amp/120V AC
1 x 12 Volt 8A DC (for batteries)
Yamaha EF2000iS portable inverter is one of the best inverters you can buy because is easy to carry and also gives you the amount of power you need to run different things like your car battery, a boat and many other equipments.

  • Portability

The handle style is Top Folding and is easy to carry. This generator doesn’t have a wheel kit because it doesn’t need one.

You can easily take your Yamaha EF2000iS portable inverter with you in any places and make use of his power to run your equipments.

  • Noise levels and CARB-compliant

By beeing smaller than a conventional generator and with a noise-absorbing design, running depending on your electrical demand at various speeds and having a super quiet muffler, Yamaha EF2000iS portable inverter Operational volume (dB) is between 51.5 and 61dB which is great.

Also Yamaha EF2000iS is CARB-compliant which means that it can be used in any U.S. state and also EPA (Environmental Protection Agency ) approved which means that you can use it in U.S. National Parks.

This is the invertor you should have in case you are looking for one with low emissions.

Yamaha EF2000iS Reviews


  • Pros

Super quiet

CARB-compliant and EPA approved

PWM or Pulse Width Modulation control with inverter technology

The engine speeds depends on the load and on the output

Great for boat owners, car batteries and RV

The air-cooled engine ensures the generator long life by easily dissipating the heat

Transforms the DC power to clean AC power to keep equipments safe

READ MORE: WEN 4750 Watt Product Analysis

  • Cons

The price is high

Not too powerful but it does a great job

Customer Reviews

With more than 400 reviews only on amazon, Yamaha EF2000iS is one of the best selling inverters available. Is easy to carry and is great for RV, car batteries and boat oweners.

If you buy an Yamaha EF2000iS portable inverter then you’ll get clean AC power to run your equipments.


You can always hook up two Yamaha EF2000iS portable inverters to get 3600 watts of power. You can do that by using the TwinTech technology which enables you to use 2 generators at the same time.

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