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Yamaha EF5500DE Spec Review

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The Yamaha EF5500DE is an open frame portable generator with a rated wattage of 4500 W and a starting wattage of 5500 W.

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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)

Zoom on the Yamaha EF5500DE

In summary, the Yamaha EF5500DE is a portable generator especially useful for:

  • RV travellers wishing to enhance their freedom and nomad lifestyle
  • 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

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 EF5500DE in use

The Yamaha EF5500DE

The Yamaha EF5500DE is powered by a 358 cc Yamaha MZ360 OHV 4-stroke engine. It delivers 120/240V, runs on gasoline and offers a running wattage of 4500W as well as 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 simple and elegant electric starter (battery included), but also a conventional pull-start mechanism. For additional convenience, the EF5500DE may also be remotely started (separate purchase).

With a full tank, the EF5500DE can operate for around 13.5 hours at 50% load (fuel consumption around 0.51 GPH), thanks to its fuel capacity of 6.9 gallons.

The following are examples of possible devices which the generator will allow you to power simultaneously:Note: The examples above are based on a maximum load of 75% and estimated wattages. The devices also may not be able to start at the same time. For a more accurate estimation, use our wattage calculator.

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

This Yamaha generator features an L5-30R receptacle, enabling an easy RV connection via an L5-30P to TT-30R adaptor. However, it is still not quite RV ready. Besides, as the EF5500DE 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

The dimensions of the Yamaha EF5500DE, which are L21.9 x W29 x H31.5 in, and its typical, open frame design provides stability and enables the generator to be raised above ground level. The featured design is ideal for the outdoors and all tough environments.

Even though this device may be technically portable (as in movable), manipulation and transportation without special equipment can be a challenge, as it weighs 243.7 pounds. Still, once it is on the ground, a wheel kit and a folding handle can easily solve the issue of low mobility and allow for easy relocation of the device.

Further safety during transport, loading and unloading of the device is provided by a lift hook, which is placed on the top of the generator's frame.

Features

Panel of the Yamaha EF5500DE

The EF5500DE's control panel

One of the many EF5500DE's features is the data center, included in its control panel, which conveniently provides information on the lifetime run hours and voltage output and thus, helps you monitor its activity and status.

In addition to this info, a light indicator serves to show you when the oil level is too low.

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

Security-wise, this product benefits from an automatic low oil shut-off (Oil Watch system) and an overload protection (circuit breaker), which gives you a complete peace of mind when using it.

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 user manual to get you promptly started, Yamaha also included a tool kit in the EF5500DE's packaging.

Emissions

The Yamaha EF5500DE is EPA-approved and CARB-compliant. It can therefore be sold and purchased in all 50 states, including California.

Moreover, it features a spark arrestor, making it usable in forested areas.

Product Video

Video of the Yamaha EF5500DE

The Yamaha EF5500DE versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Yamaha EF5500DE compare to generators of similar power (between 4000 and 5000 W).

  • With its weight of 243.7 lbs, the Yamaha EF5500DE is one of the heavier generators in the 4000-5000 rated wattage category. If weight is your top priority, one of the champions in this power category is the Pulsar PG5250, weighing just 99.5 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 be interested in the Yamaha EF4500iSE, one of the least noisy generators similarly powerful as this one, rated for 58 dBA.
  • As the EF5500DE features an autonomy of 13.5 hours at 50% 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 Dewalt DXGN4500, with 15 hours .
  • While the run time is an important parameter, it is dependent on the fuel tank’s capacity and thus, doesn’t say much on its own unless we consider fuel consumption as well. Standing at an estimated 0.51 GPH (gallon per hour) at a 50% load, this generator is somewhat average in this area compared to other devices, within the aforementioned wattage range. 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.

Price comparison

As you can see from this dynamic chart, when compared to other 4000-5000W generators, the Yamaha EF5500DE 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
  • Remote start capable
  • High run time
AVERAGE SPECS:
  • Decent fuel efficiency
WEAKNESSES:
  • On the heavy side (243.7 lbs)
  • On the noisy side (74.1 dBA)

Do you own the Yamaha EF5500DE and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Where to buy the Yamaha EF5500DE?

You can easily buy your Yamaha generator online. You will benefit from a convenient delivery and avoid carrying the heavy package yourself. Here are a few reliable online sellers:
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Price History
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Price history for the Yamaha EF5500DE
Latest updates:
  • $1,315.99 - September 3, 2019
  • $1,399.99 - August 31, 2019
  • $1,315.99 - August 29, 2019
  • $1,399.99 - August 28, 2019
  • $1,315.99 - August 24, 2019
  • $1,399.99 - August 21, 2019
  • $1,329.99 - August 17, 2019
  • $1,399.99 - August 15, 2019
Since: May 14, 2019
  • Highest Price: $1,399.99 - August 15, 2019
  • Lowest Price: $1,214.99 - July 15, 2019

Features and Specifications

General

InverterNo
PortableYes
Parallel capableNo
RV readyNo
FuelGasoline
Engine358 cc Yamaha MZ360 OHV 4-stroke
Starting systemElectric, Recoil, Remote

Power

VoltageAC: 120/240V 60 Hz
Running watts4500 W
Starting watts5500 W
Running amps (@120/240V)37.5/18.8 amps
Peaks amps (@120/240V)45.8/22.9 amps
Run time @50% load13.5 h
Run time @25% loadN/A

Features

GFCI outletsYes
Covered outletsNo
Automatic Voltage RegulationNo
AC outlets2x 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 output
IndicatorsLow oil
Fuel tankN/A
Fuel gaugeYes

Misc

Weight243.7 lbs
Dimensions (L x W x H)21.9 x 29 x 31.5 in
Noise (lower limit)74.1 dBA
THDN/A
EmissionsCARB, EPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralBonded to frame
Accessories includedTool kit
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 EF5500DE 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. Alternatively, you can also contact their Customer Support: 1-800-962-7926.

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