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Yamaha 2000 Generator Review

Yamaha EF2000iS Inverter Generator is among those few generators that hold an excellent repute and on genuine good grounds. It is the representation of the preference of those people who look for a very small yet powerful unit to meet small power backup requirement for home or office or outdoor fun activities.

However, one cannot make a decision to purchase just based on its utter popularity. There are other certain factors that need to be evaluated before considering for a serious purchase. Here is detailed assessment to help you learn more about the Yamaha 2000 Generator.

Engine Description and Performance

This Yamaha generator uses a high-quality 4-stroke 79cc OHV engine, which is fixed with a cast iron tube to boost its competence and engine life. It has performed comparatively better than other equivalent inverter genies.

It produces 1,600 running watts and up to 2,000 surge watts. Being an inverter itself and with integrated Yamaha’s Plus Width Modulation control, it produces clean power to run sensitive electronic goods. With its 1,600 rated power it can efficiently work as a small emergency power resource.

It comes with a “Smart Throttle Load” setting that automatically sets the engine pace depending on the required power output and a dual coil alternator stat or that helps in lowering the speed of the engine; making EF2000iS more fuel efficient.

Fuel Type and Run time

This gas-powered unit comes with a small 1.1 gallon tank. However,surprisingly despite of its small tank it gives a run time of 10.5 hours with a 25% load. It is far more fuel efficient than any of its contender.

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Start Type and Receptacles

It comes with a recoil pull start mechanism. It starts at the first pull only, making is reliable.

There are two 5-20R outlets and one 12V DC charging point on its control panel.

Sound Level

EF2000iS is well-known for its quiet operation.  Yamaha’s advanced muffler technique used in this model, keeps the noise levels low just like a whisper (ranging from 51.5 dB to 61.5 dB). In fact many people get confused if the generator is running unless they get closer to it. No doubt, that is why it is so preferred for camping out.

Dimension and Transferability

Another fascinating and recommended feature of Yamaha 2000 Generator is its compact built and insignificant weight. With a length of 19.3 inches, width of 11 inches and height of 17.9 inches it occupies merely 2.2 cubic feet space and weighs just 44 pounds within empty tank. Super handy EF2000iS has earned a place in the camping fan arrangements.

Extra Features

Apart from top-notch quality, power-packed engine, fuel efficiency, clean power, soundless operation it has other added features including, fuel gauge, warning at low-oil, spark arrestors, circuit breakers, auto warm-up, ability to connect two generators, voltage selector switch and many more.


However, the first class 3 years product warranty from the manufacturer of EF2000iS is certainly worth to be noticed. This warranty covers the whole generator including the parts and the engineering. Isn’t it brilliant?

Product Price

Despite of the exceptional quality, convenient, and whisper-silent operation there is a single negative aspect that EF2000iS has got; the product value which about $1,000. Generally inverter generators are more expensive than the conventional generators. However Yamaha Inverters are pricey compared with other identical inverters(but affordable than the Honda models).

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Customer Reviews

EF2000iS is the “#1 best seller” in portable generator on Amazon.com. It has earned 4.6 out 5 stars among 272 reviewsover there. 80% of the purchasers have given it 5 stars rating, 9% given 4 stars. So many positive feedback clearly indicates that it has blown away everyone with its feature; portability, reliable and quiet. Many have pointed out how simple it is to start.

However, the negative reviews are generally an isolated product defects or results out of failure in meeting unrealistic expectation of the buyer. But, one cannot rule out the product based on few 1-star feedback. Pick up a generator after you decide upon the total power requirement that you are having.

Here take a quick look at the overall pros and cons of Yamaha 2000 Portable Inverter Generator;


  • It is smooth and whisper-quiet at all speed
  • Fuel efficiency
  • Extremely reliable
  • CARB complaint
  • Light weight and super-compact
  • Provides excellent runtime
  • Carrying handle for easy portability
  • Easy-to-maintain
  • 3 years of warranty
  • Clean and pure electricity


  • Comparatively expensive
  • Restricted power yield

It is a great generator for tailgating activities, camping and if case of emergency it can support one or two large appliances even. It is the first choice for those who want to travel with a power resource for all the aforementioned features.  From the perspective of reliability and quality Yamaha EF2000iS Portable Inverter Generator is unmatched. Considering the years of service, and fuel efficiency, even if it is little expensive; it is totally worth it.