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Yamaha EF3000iS - 2800/3000W Inverter Generator

The Yamaha EF3000iS is a quiet inverter generator with a rated wattage of 2800 W and a starting wattage of 3000 W.

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Description

QUIET, CLEAN POWER AT A VALUE PRICE. Quiet and portable, this inverter has powerful features all backed by a 3‑year warranty. (source: Yamaha (opens in a new tab))

Zoom on the Yamaha EF3000iS

In a nutshell, the Yamaha EF3000iS is a quiet portable inverter generator mostly geared towards:

  • DIYers who wish to improve their efficiency with tools
  • Homeowners in need of an emergency backup power for their essentials
  • Tailgating and campground aficionados with the desire of enjoying power anywhere they go
  • RV travellers wishing to enhance their freedom and nomad lifestyle

In the following paragraphs, we shall explore the power characteristics, available outlets, portability, and any additional features of the device, along with its emission compliance information.

Power & Run Time

The Yamaha EF3000iS in use

The Yamaha EF3000iS

The Yamaha EF3000iS is powered by a 171 cc Yamaha MZ175 OHV 4-stroke engine. It delivers 120V, runs on gasoline and offers a running wattage of 2800W as well as a peak wattage of 3000W.

The inverter generator features a simple traditional pull-start mechanism. It is rated for a noise of 53 dBA (just slightly more noisy than a refrigerator).

This generator features Yamaha's Smart Throttle™. This load-sensing feature automatically adjusts engine speed to match its load in order to offer greater fuel efficiency and noise reduction.

Thanks to a fuel capacity of 3.4 gallons, the EF3000iS can operate for up to 18.6 hours with a full tank (fuel consumption around 0.18 GPH).

Sensitive electronics can be safely plugged in the AC outlets, as the EF3000iS produces a clean sine wave, with a <3% Total Harmonic Disruption (THD).

Outlets

The control panel features the following 3 AC outlets:

Duplex 120V 20A (5-20R)
120V 30A (L5-30R) receptacle

Even if this Yamaha generator isn't quite RV Ready, it still allows for an easy RV connection via an L5-30P to TT-30R adaptor, thanks to its L5-30R receptacle.

Portability

The Yamaha EF3000iS is an inverter generator and has an encased design of the following dimensions: L26.8 x W17.5 x H21.9 in. Thus, it is more aesthetical than conventional, open frame products. This modern design aims to provide an ideal power solution to recreational users.

As the generator's weight is 136 pounds, manually moving it or transporting it may be challenging, despite the fact that it is technically considered 'portable' (movable). Nevertheless, thanks to its set of 4 wheels and its double handle (a decent solution to its lack of maneuverability), the generator can be easily moved, once placed the ground.

Features

Panel of the Yamaha EF3000iS

The EF3000iS's control panel

Several light indicators serve to show you when the generator is on overload, the generator is ready and its oil levels are insufficient.

The inverter generator allows for a quick, easy and convenient assessment of its gas level, as it is equipped with a built-in fuel gauge.

From a security point of view, the generator is equipped with an overload protection (circuit breaker) and an automatic low oil shut-off (Oil Watch system), giving you a peace of mind during use.

Yamaha's Oil Watch warning system gives you an extra peace of mind. This feature enhances long-term durability by preventing engine damage and costly repairs. Once the oil begins to run low, the generator automatically shuts off and cannot be re-started until oil is added.

It also includes a carbon monoxide sensor. This sensor is designed to monitor the level of carbon monoxide present during the generator's operation. If the generator is positioned incorrectly and carbon monoxide levels rise to an unsafe level, the generator will automatically shut down. It’s a welcomed additional security feature, but don’t forget to always take your generator outside (opens in a new tab).

Besides the usual set of documentation and owner's manual (opens in a new tab) to get you promptly started, Yamaha also included a battery charging cables in the EF3000iS's packaging.

Emissions

The Yamaha EF3000iS is EPA-approved and CARB-compliant. Therefore, its sale and purchase are permitted in all of the 50 states, including California.

Moreover, it features a spark arrestor, which makes it suitable for use in forested areas.

Product Videos

The Yamaha EF3000iS versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Yamaha EF3000iS compare to inverter generators of similar power (between 2500 and 3500 W).

  • A weight of 136 lbs makes the Yamaha EF3000iS one of the heavier inverters in the 2500-3500 rated wattage range. If you are concerned by weight, one of the champions in the above-mentioned power range is the Genmax GM3300i, with a dry weight of just 47.4 pounds.
  • With a lowest noise rating of 53 dBA, the inverter generator is one of the more quiet of the generators of similar type and power. If noise emissions are important to you, one of the least noisy generators of this power range is the Honda EU3000iS with only 50 dBA.
  • The EF3000iS provides a higher run time than similarly powerful inverters, reaching up to 18.6 hours at 25% load. If autonomy is your priority, one of the devices of a similar power output with the highest run time is the Champion 200914, reaching up to 22 hours.
  • The run time is important, but also hugely depends on the capacity of the fuel tank and doesn't mean much if we don't talk about fuel consumption as well. This inverter generator reaches an estimated fuel consumption of 0.18 GPH (gallon per hour) at a 25% load, making it average, for the previously mentioned wattage range. If not satisfied with the afore-mentioned fuel consumption, you may wish to check out the Energizer eZV3500P. With a fuel consumption of as little as 0.13 GPH, it is one of the most efficient generators currently on the market.

Here's a list of the most popular specific comparisons:

Price comparison

As you can see from this interactive chart, when compared to other 2500-3500W inverter generators, the Yamaha EF3000iS is on the expensive side of the price range.

While certainly not the cheapest of its kind, purchasing it would most likely also mean enjoying the reliability of a high-end product.

The bottom line

STRENGTHS:
  • CO Sensor
  • Inverter
  • Quiet for its power (53 dBA)
  • High run time
AVERAGE SPECS:
  • Decent fuel efficiency
WEAKNESSES:
  • On the expensive side
  • No data center
  • No electric start
  • No parallel ports
  • On the heavy side (136 lbs)

Do you own the Yamaha EF3000iS and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterYes
PortableYes
Parallel capableNo
RV readyNo
FuelGasoline
Engine171 cc Yamaha MZ175 OHV 4-stroke
Starting systemRecoil
Power
VoltageAC: 120V 60 Hz
Running watts2800 W
Starting watts3000 W
Running amps23.3 amps
Peak amps25 amps
Run time @50% loadUnknown
Run time @25% load18.6 h
Features
GFCI outletsNo
Covered outletsNo
Automatic Voltage RegulationInverter
AC outlets
  • 1x Duplex 120V 20A (5-20R)
  • 1x 120V 30A (L5-30R)
DC outletsNo
Data centerNo
IndicatorsLow oil, overload and output ready
Fuel tankMetal, 3.4 gal
Fuel gaugeYes
Misc
Weight136 lbs
Approx. dimensions (L x W x H)26.8 x 17.5 x 21.9 in
Noise (lower limit)53 dBA
THD< 3%
ComplianceCARB, EPA
SecurityLow oil and overload protection, CO monitoring
Spark arrestorYes
NeutralFloating
Accessories includedBattery charging cables
Warranty3 years
UPC700115548878

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.

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About Yamaha

With a rich history of over 130 years, the Japanese based Yamaha Corporation, founded in 1887, has tipped its fingers in every industry imaginable, most notably motorcycles, musical instruments and electronics. The company boasts with a wide range of products, including many of the top rated portable generators. However, it has been reported that many of the newer models are made in China, rather than Japan.

Warranty Information

The Yamaha EF3000iS is covered under a warranty for up to 3 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Yamaha generators, please consult Yamaha's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-800-962-7926.

Questions & Answers

What can it power?
Examples of items that can be simultaneously powered.
The examples below are based on a maximum load of 80% and estimated wattages. For a more accurate estimation, use our generator sizing calculator.
ItemRunning WattsStarting Watts
At homeElectric fry pan15001500
Refrigerator (energy star)1921192
Slow cooker270270
Cell phone charger2020
Total1982 W2982 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Toaster oven800800
Mixer200200
Pair of small speakers4545
Total2235 W2825 W
For workGrinder14002500
Drain cleaner250250
Bug zapper8080
Total1730 W2830 W

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