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Yamaha EF3000iS - 2800/3000W Inverter Generator

The Yamaha EF3000iS is a quiet inverter generator with a rated wattage of 2,800 W and a starting wattage of 3,000 W. (Read full specs)

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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 few words, the Yamaha EF3000iS is a quiet portable inverter generator perfectly suited for:

  • Handcrafting enthusiasts who wish to work on-the-go
  • Homeowners in need of an emergency backup power for their essentials
  • Camping and tailgating buffs looking to enhance their experience
  • RV travellers wishing to enhance their freedom and nomad lifestyle

In the sections ahead, the power characteristics, availability of various outlets, the portability, and any additional features of the device shall be discussed.

Power & Run Time

The Yamaha EF3000iS in use

The Yamaha EF3000iS

Running on gasoline, the Yamaha EF3000iS utilizes a 171 cc Yamaha MZ175 OHV 4-stroke engine to deliver 120V, offering a running wattage of 2,800W and a starting wattage of 3,000W.

Operating with a noise level of 54.5 dBA (just slightly more noisy than rainfall), the inverter generator starts up via a manual recoil starter system.

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.

With its 3.4 gallons fuel tank, the EF3000iS can operate for up to 18.6 hours when fully fueled (with fuel usage averaging 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 Distortion (THD).

Outlets

The control panel is equipped with the following 3 AC outlets:

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

Though it may not be labeled as 'RV Ready,' this Yamaha generator offers the benefit of hassle-free RV connectivity through its L5-30R receptacle, allowing you to easily power your RV with the assistance of an L5-30P to TT-30R adaptor.

Portability

As the Yamaha EF3000iS is an inverter generator, its encased design (L26.8 x W17.5 x H21.9 in) offers more aesthetics than a conventional, open frame product. The design follows the contemporary trends and is perfect for recreationally generating power.

Though weighing 136 lbs, the generator remains classified as 'portable,' indicating its capability to be moved, though its weight could pose transport challenges. However, the lack of maneuverability can be offset with its set of 4 wheels and its double handle, which allows for convenient shifting once the generator is placed on the ground.

Features

Panel of the Yamaha EF3000iS

The EF3000iS's control panel

Some light indicators allow you to instantly see if the oil level is too low, the generator is on overload and the generator is ready.

The built-in fuel gauge of the inverter generator ensures simple and quick gas level assessments.

Regarding security, the generator comes with an automatic low oil shut-off (Oil Watch system) and an overload protection (circuit breaker), providing peace of mind during operation.

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.

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.

Product Video

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).

  • At a dry weight of 136 pounds, the Yamaha EF3000iS is one of the heavier inverters which can produce between 2500 and 3500 running watts. If weight matters to you, one of the champions in this power range is the Pulsar PGD40iSCO with only 46 pounds.
  • Since this inverter generator is rated for a lowest possible noise of 54.5 dBA, it can be considered as one of the more quiet of the products generating similar power. If you'd like a less noisy alternative, the Honda EU3000iS is a strong contender. It boasts a noise rating of 50 dBA, placing it among the quietest generators in its power category.
  • In terms of run time, the EF3000iS surpasses similarly powerful inverters, boasting one of the higher run times at up to 18.6 hours. If runtime is a priority for you, the Champion 200914 stands out as one of the generators with the longest run time in its power range, providing up to 22 hours of continuous use.
  • Run time is crucial, but it heavily relies on the fuel tank's capacity. Thus, considering fuel efficiency alongside is essential. This inverter generator has an estimated fuel consumption of roughly 0.18 GPH (gallon per hour) at a 25% load, rendering it somewhat average compared to devices of a similar output. If you wish to further improve in the area of fuel efficiency, the Energizer eZV3500P, which boasts with a gas consumption of only 0.13 GPH, may be the right generator for you.

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

Price comparison

As you can see from these interactive charts, 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 (54.5 dBA)
  • High run time
  • Made in Japan
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
Parallel capableNo
RV readyNo
FuelGasoline
Engine171 cc Yamaha MZ175 OHV 4-stroke
Starting systemRecoil
Warranty3 years
Power
VoltageAC: 120V 60 Hz
Running watts2,800 W
Starting watts3,000 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)54.5 dBA
THD< 3%
ComplianceCARB, EPA
SecurityLow oil and overload protection, CO monitoring
Spark arrestorYes
NeutralFloating
Accessories includedBattery charging cables
Country of originJapan
UPC810856030645

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, many of their 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 sizer.
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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