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Yamaha EF5500D - 4500/5500W Portable Generator

The Yamaha EF5500D is a portable open frame generator with a rated wattage of 4,500 W and a starting wattage of 5,500 W. (Read full specs)

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Yamaha EF5500DYamaha EF5500DYamaha EF5500DYamaha EF5500D
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Price History
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Price history for the Yamaha EF5500D
Latest updates:
  • $2,379.00 - May 1, 2024
  • $2,178.91 - April 2, 2024
  • $2,379.00 - February 22, 2024
Data source: acmetools.com
Since: February 22, 2024
  • Highest Price: $2,379.00 - February 22, 2024
  • Lowest Price: $2,178.91 - April 2, 2024

Description

POWER‑PACKED AND LOADED WITH FEATURES. The EF5500 offers the Contractor and home back up customer 5500 watts of power at a great value. (source: Yamaha (opens in a new tab))

Zoom on the Yamaha EF5500D

In a few words, the Yamaha EF5500D is a portable generator perfectly suited for:

  • RV travellers looking for even more independence
  • People occasionally participating in sporting competitions, open-air performances and outdoor festivals
  • Homeowners in need of an emergency backup power for their essentials
  • Professionals in need of safely powering high-intensity work or lighting equipment

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

Power & Run Time

The Yamaha EF5500D in use

The Yamaha EF5500D

The Yamaha EF5500D's design includes a gasoline-fueled 358 cc Yamaha MZ360 OHV 4-stroke engine. With a 120/240V output, it gives a running wattage of 4,500W and also a peak wattage of 5,500W.

With a noise rating of 74.1 dBA (just slightly more noisy than a dishwasher), the generator features a manual recoil starter system.

The EF5500D's fuel tank holds 6.9 gallons, ensuring uninterrupted operation for around 13.5 hours at 50% load with a full tank (fuel consumption approximately 0.51 GPH).

Considering its relatively high Total Harmonic Distortion (THD) of less than 7%, it is not recommended to rely on the EF5500D for powering sensitive electronic devices.

Outlets

The control panel features the upcoming 6 AC outlets:

Two Duplexes 120V 20A (5-20R) GFCI
120V 30A (L5-30R) receptacle
120/240V 30A (L14-30R) receptacle

Despite not meeting the 'RV Ready' criteria, this Yamaha generator grants the advantage of simple RV compatibility via its L5-30R receptacle, enabling you to conveniently power your RV by using an L5-30P to TT-30R adaptor. Besides, as the EF5500D holds a twist-lock L14-30R receptacle, it is transfer switch ready: you'll easily be able to connect it to your breaker box to power your home during a power outage.

Portability

At L29.1 x W29 x H31.5 in, the traditional open frame structure of the Yamaha EF5500D ensures stability while facilitating convenient maintenance access to components and promoting air cooling. The generator is designed for ideal use outdoors and in rough environments.

Though weighing 216.1 lbs, the generator remains classified as 'portable,' indicating its capability to be moved, though its weight could pose transport challenges. Nevertheless, thanks to its wheel kit and its folding handle (a decent solution to its lack of maneuverability), the generator can be easily moved, once placed the ground.

A lift hook, which is on the top of the frame, serves as an extra safety feature for the transport, unloading and loading of the device.

Features

Panel of the Yamaha EF5500D

The EF5500D's control panel

Included in the control panel of the EF5500D, a digital data center assists in tracking its status and activity by providing details on the lifetime run hours and voltage.

In addition to this info, a light indicator allows you to instantly see if its oil levels are insufficient.

Featuring a built-in fuel gauge, the generator offers quick, convenient, and easy gas level checks at a glance.

As far as security is concerned, the generator comes with an overload protection (circuit breaker) and an automatic low oil shut-off (Oil Watch system), providing 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.

Besides the usual set of documentation and owner's manual (opens in a new tab) to get you promptly started, Yamaha also included a tool kit in the EF5500D's packaging.

Product Video

The Yamaha EF5500D versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Yamaha EF5500D compare to generators of similar power (between 4000 and 5000 W).

  • With its weight of 216.1 lbs, the Yamaha EF5500D is one of the heavier generators in the 4000-5000 rated wattage category. If you are mindful of weight, the WEN 56477i is among the top contenders in this power range, with a dry weight of 72.7 pounds.
  • As this generator has its lowest possible noise of 74.1 dBA, it should be considered noisier compared to its peers of a comparable running wattage. If noise emissions are one of your priorities, you may want to take a look at the Yamaha EF4500iSE. It's one of the quietest options among generators of similar power, rated at 58 dBA.
  • Since the EF5500D boasts with a run time of around 13.5 hours at 50% load, it can be safely judged as a device of a higher run time than most generators of a comparable output. Furthermore, considering the run times, one of the generators which have a roughly same power output, with the highest autonomy, is the NorthStar c5500, as it provides around 15.1 hours.
  • Run time is a key metric, but it's dependent on the generator's fuel capacity. Therefore, discussing fuel efficiency is necessary to get the full picture. Compared to similar devices, this generator is less fuel-efficient than most: it burns around 0.51 gallons of gasoline per hour at a 50% load. If you're placing a high priority on fuel consumption, the WEN 56480iX, with a low fuel consumption rate of 0.27 GPH, could be an option to consider.

Price comparison

As you can see from these interactive charts, when compared to other 4000-5000W generators, the Yamaha EF5500D is on the average side of the price range.

Therefore, this generator nicely fits in the expected budget for this kind of product.

The bottom line

STRENGTHS:
  • In the expected price range
  • CO Sensor
  • GFCI Outlets
  • High run time
WEAKNESSES:
  • No electric start
  • On the heavy side (216.1 lbs)
  • On the noisy side (74.1 dBA)
  • Low fuel efficiency

Do you own the Yamaha EF5500D and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterNo
Parallel capableNo
RV readyNo
FuelGasoline
Engine358 cc Yamaha MZ360 OHV 4-stroke
Starting systemRecoil
Warranty3 years
Power
VoltageAC: 120/240V 60 Hz
Running watts4,500 W
Starting watts5,500 W
Running amps (@120/240V)37.5/18.8 amps
Peak amps (@120/240V)45.8/22.9 amps
Run time @50% load13.5 h
Run time @25% loadUnknown
Features
GFCI outletsYes
Covered outletsNo
Automatic Voltage RegulationYes
AC outlets
  • 2x Duplex 120V 20A (5-20R) GFCI
  • 1x 120V 30A (L5-30R)
  • 1x 120/240V 30A (L14-30R)
DC outletsNo
Data centerLifetime run hours and voltage
IndicatorsLow oil
Fuel tankMetal, 6.9 gal
Fuel gaugeYes
Misc
Weight216.1 lbs
Approx. dimensions (L x W x H)29.1 x 29 x 31.5 in
Noise (lower limit)74.1 dBA
THD< 7%
ComplianceCARB, EPA
SecurityLow oil and overload protection, CO monitoring
Spark arrestorYes
NeutralBonded to frame
Accessories includedTool kit and wheel kit
Country of originChina
SeriesIndustrial
Other model numbersEF55DZ1

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 EF5500D 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 homeAC (10,000 BTU)15002200
Dish washer15003000
Refrigerator (energy star)1921192
Blender400850
Total3592 W5092 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Hair dryer18001900
Coffee maker600600
Total3590 W4180 W
For workTable saw18004500
Reciprocating saw730960
Drain cleaner250250
Total2780 W5480 W

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