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Yamaha EF3000iS Spec Review

The Yamaha EF3000iS is a quiet portable 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 summary, the Yamaha EF3000iS is a quiet portable inverter generator especially useful for:

  • Handcrafting enthusiasts who wish to work on-the-go
  • Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
  • Camping and tailgating buffs looking to enhance their experience
  • RV travellers who wish to upgrade their experience to another level

The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, the extra features it benefits from, and any relevant emission compliance details.

Power & Run Time

The Yamaha EF3000iS in use

The Yamaha EF3000iS

The Yamaha EF3000iS's design includes a gasoline-fueled 171 cc Yamaha MZ175 OHV 4-stroke engine. With a 120V output, it gives a running wattage of 2800W and also a peak wattage of 3000W.

The inverter generator is rated for a noise of 53 dBA (just slightly more noisy than a conversation at home). Its starting mechanism is based on a conventional pull-start mechanism.

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

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

Outlets

The control panel includes the following 3 AC outlets:

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

Additionally, it features 1 DC outlet: there's a 12V 12A receptacle with which charging your batteries is made easy.

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

Portability

Since the Yamaha EF3000iS is an inverter generator, its closed design (L26.8 x W17.5 x H21.9 in) has an esthetical advantage over conventional, open frame devices. The design follows the contemporary trends and is perfect for recreationally generating power.

Since the generator weighs 136 lbs, it will be incredibly difficult to manually lift it and transport it, even though it is technically considered to 'be portable' (in the sense that it is movable). However, its challenging mobility is solved by its wheel kit and its double handle, which will ease its displacement, once it is on the floor.

Features

Panel of the Yamaha EF3000iS

The EF3000iS's control panel

Some light indicators allow you to instantly see if the generator is ready, its oil levels are insufficient and the generator is on overload.

The inverter generator includes a built-in fuel gauge, a quick, easy and convenient method of checking the device’s gas level.

From a security standpoint, the product offers an overload protection (circuit breaker) and an automatic low oil shut-off (Oil Watch system), allowing you to use it with a peace of mind.

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.

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, making it usable in forested areas.

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 generators of similar power (between 2500 and 3500 W).

  • Considering its dry weight of 136 pounds, the Yamaha EF3000iS is one of the heavier generators producing between 2500 and 3500 running watts. If you are concerned by weight, one of the champions in the above mentioned power range is the WEN GN400i, with a dry weight of just 66.1 pounds.
  • With a lowest noise rating of 53 dBA, the inverter generator is one of the more quiet of the generators of similar 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.
  • As the EF3000iS features an autonomy of up to 18.6 hours at 25% load, it has a higher run time than an average generator of its power range. If you consider autonomy on a single full tank as one of the deciding factors, one of the generators in the same power range that offers the highest run time is the Honda EU3000iS, with up to 20 hours.
  • Autonomy holds its importance, however, it is largely dependent on the generator’s fuel capacity and so, it is nonsensible to discuss it without mentioning fuel efficiency as well. As this inverter generator uses an estimated 0.18 GPH (gallon per hour) at a 25% load, it finds itself in the average gasoline consumption range of similar products. If you wish to further improve in the area of fuel efficiency, the Energizer eZV3200P, 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 this interactive chart, when compared to other 2500-3500W 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:
  • 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, DC: 12V
Running watts2800 W
Starting watts3000 W
Running amps23.3 amps
Peaks amps25 amps
Run time @50% loadN/A
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 outlets1x 12V 12A receptacle
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%
EmissionsCARB, EPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralFloating
Accessories includedBattery charging cables
Warranty3 years

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.

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 size calculator.
ItemRunning WattsStarting Watts
At homeRefrigerator (energy star)1921192
Hair dryer18001900
Total1992 W2992 W
For campingRadiant heater13001300
RV refrigerator180600
Rice cooker650650
Radio100100
Total2230 W2650 W
For workGrinder14002500
Drain cleaner250250
Bug zapper8080
Total1730 W2830 W

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