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Yamaha EF5500DE Spec Review

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 (opens in a new tab))

Zoom on the Yamaha EF5500DE

In a nutshell, the Yamaha EF5500DE is a portable generator mostly geared towards:

  • RV travellers who wish to upgrade their experience to another level
  • Homeowners who want to be able to use the most necessary devices in their household, even during a blackout
  • 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 houses a 358 cc Yamaha MZ360 OHV 4-stroke engine, which provides 120/240V, consumes gasoline and delivers a running wattage of 4500W along with a peak wattage of 5500W.

At a noise rating of 74.1 dBA (just slightly more noisy than a shower), this generator can be started via a simple and elegant electric starter (battery included), or a simple traditional pull-start mechanism. To add further convenience, the EF5500DE can be remotely started (separate purchase).

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

Outlets

The control panel provides the upcoming 6 AC outlets:

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

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. Besides, as it features a twist-lock L14-30R receptacle, the EF5500DE is transfer switch ready: in case of a power outage, you will be easily able to connect it to a breaker box and power your household.

Portability

The Yamaha EF5500DE 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. The device has been designed for tough environments and demanding outdoor use.

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. However, this lack of maneuverability is compensated by a wheel kit and a folding handle, with which you can conveniently displace it, once it's on the ground.

In addition, the device is equipped with a lift hook on the top of its frame, which provides extra safety during the loading, unloading and transport of the generator.

Features

Panel of the Yamaha EF5500DE

The EF5500DE's control panel

To help you monitor the EF5500DE's status and activity, its control panel is equipped with a digital data center, giving you information on the lifetime run hours and voltage output.

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

The generator allows for a quick, easy and convenient assessment of its gas level, as it is equipped with a built-in fuel gauge.

From a security point of view, the generator is equipped with an automatic low oil shut-off (Oil Watch system) and an overload protection (circuit breaker), giving you a 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.

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 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, so it is adequate for use in forested areas.

Product Video

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).

  • As its dry weight is 243.7 pounds, the Yamaha EF5500DE is one of the heavier of the products which can generate 4000 to 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.
  • When compared to devices able to produce a similar running wattage, this generator and its lowest emitted noise of 74.1 dBA is on the noisier side. 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.
  • Thanks to an impressive running time of around 13.5 hours at 50% load, the EF5500DE benefits from a higher run time than many generators of a similar output. Furthermore, considering the run times, one of the generators which have a roughly same power output, with the highest autonomy, is the Dewalt DXGN4500, as it provides around 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. This generator reaches an estimated fuel consumption of 0.51 GPH (gallon per hour) at a 50% load, making it average, for the previously mentioned 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 interactive 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.

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 (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-800-962-7926.

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