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Yamaha EF5500D Spec Review

The Yamaha EF5500D is a portable open frame generator with a rated wattage of 4500 W and a starting wattage of 5500 W.

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Yamaha EF5500DYamaha EF5500D

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 summary, the Yamaha EF5500D is a portable generator especially useful for:

  • RV travellers wishing to enhance their freedom and nomad lifestyle
  • People occasionally participating in outdoor fairs, festivals or events
  • Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
  • Professionals who want to be able to deliver results, even during a power failure

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 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 4500W and also a peak wattage of 5500W.

With a noise rating of 74.1 dBA (just slightly more noisy than a vacuum cleaner), the generator features a conventional pull-start mechanism.

With a fuel capacity of 6.9 gallons, the EF5500D may run for around 13.5 hours at 50% load with a full tank (fuel consumption around 0.51 GPH).

Outlets

The control panel includes the following 6 AC outlets:

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

While this Yamaha generator is not RV Ready, its L5-30R receptacle can be used for a simple RV connection with an L5-30P to TT-30R adaptor. Besides, due to the featured twist-lock L14-30R receptacle, the EF5500D is transfer switch ready: you may connect it to a breaker box to power your household during a power outage.

Portability

The Yamaha EF5500D has the following dimensions: L21.9 x W29 x H31.5 in. In combination with its conventional, open frame design, they provide support and allow the generator to be raised above ground level. This type of design is ideal for tough environments and heavy outdoor use.

As the generator's weight is 221.7 pounds, manually moving it or transporting it may be challenging, despite the fact that it is technically considered 'portable' (movable). Nevertheless, it can still be moved quite conveniently with the help of its wheel kit and its folding handle, once it is placed on the ground.

The generator comes with an additional safety feature, a lift hook on the top of its frame, which is helpful during its transport, loading and unloading.

Features

Panel of the Yamaha EF5500D

The EF5500D's control panel

One of the many EF5500D's features is the data center, included in its control panel, which conveniently provides information on the lifetime run hours and thus, helps you monitor its activity and status.

In addition to this info, a light indicator serves to show you when its oil levels are insufficient.

The fuel level of the generator can be determined quickly, easily, and conveniently with the help of its built-in fuel gauge.

As far as security is concerned, the generator can be used with a peace of mind, as it features an automatic low oil shut-off (Oil Watch system) and an overload protection (circuit breaker).

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 tool kit in the EF5500D's packaging.

Emissions

The Yamaha EF5500D 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 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).

  • At a dry weight of 221.7 pounds, the Yamaha EF5500D is one of the heavier devices which can produce between 4000 and 5000 running watts. If weight matters to you, one of the champions in this power range is the Pulsar PG5250 with only 99.5 pounds.
  • This generator, with its lowest possible noise rated at 74.1 dBA falls into the more noisy category, compared to other devise of a similar running wattage. If you are concerned with noise, check out the A-iPower AP5000, which is one of the least noisy generators in its power range, with a noise rating of just 58 dBA.
  • The EF5500D provides a higher run time than similarly powerful devices, reaching around 13.5 hours at 50% load. Concerning the run times, one of the several devices with a comparable output, offering the highest autonomy, is the Dewalt DXGN4500, which is able to run for around 15 hours.
  • Even though run times are undoubtedly important, they are dependent on the fuel capacity to a large extent. For a more wholesome picture, we must take into consideration the fuel consumption of the generator. This generator has an estimated fuel consumption of roughly 0.51 GPH (gallon per hour) at a 50% load, rendering it somewhat average compared to devices of a similar output. If fuel consumption is your top priority, we suggest to check out the Pulsar PG5250B, which has a fuel consumption of only 0.33 GPH and thus, is one of the most efficient devices in our database.

The bottom line

STRENGTHS:
  • GFCI Outlets
  • High run time
AVERAGE SPECS:
  • Decent fuel efficiency
WEAKNESSES:
  • No electric start
  • On the heavy side (221.7 lbs)
  • On the noisy side (74.1 dBA)

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
PortableYes
Parallel capableNo
RV readyNo
FuelGasoline
Engine358 cc Yamaha MZ360 OHV 4-stroke
Starting systemRecoil
Power
VoltageAC: 120/240V 60 Hz
Running watts4500 W
Starting watts5500 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 RegulationNo
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
IndicatorsLow oil
Fuel tankMetal, 6.9 gal
Fuel gaugeYes
Misc
Weight221.7 lbs
Approx. dimensions (L x W x H)21.9 x 29 x 31.5 in
Noise (lower limit)74.1 dBA
THDUnknown
EmissionsCARB, EPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralBonded to frame
Accessories includedTool kit and wheel kit
Warranty3 years
SeriesIndustrial

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 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 size 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
Electric fence (25 miles)250250
Total2780 W5480 W

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