Zoom on the Yamaha EF5500DE
In a nutshell, the Yamaha EF5500DE is a portable generator mostly geared towards:
- RV travellers wishing to enhance their freedom and nomad lifestyle
- People occasionally participating in sporting competitions, open-air performances and outdoor festivals
- Homeowners who want to be able to use the most necessary devices in their household, even during a blackout
- Professionals who want to ensure that a power failure will not prevent them from working
In the sections ahead, the power characteristics, availability of various outlets, the portability, and any additional features of the device shall be discussed, including its emission compliance information.
Power & Run Time
The Yamaha EF5500DE's core is the 358 cc Yamaha MZ360 OHV 4-stroke engine, which runs on gasoline. With an output of 120/240V, it provides a running wattage of 4500W and a peak wattage of 5500W.
The generator is rated for a noise of 74.1 dBA (just slightly more noisy than a vacuum cleaner). Its starting mechanisms include a simple traditional pull-start mechanism and a simple and elegant electric starter (battery included). For additional convenience, the EF5500DE may also be remotely started (separate purchase).
With a fuel capacity of 6.9 gallons, the EF5500DE may run for around 13.5 hours at 50% load with a full tank (fuel consumption around 0.51 GPH).
The control panel provides the upcoming 6 AC outlets:
This Yamaha generator isn't quite RV Ready, but it features an L5-30R receptacle, allowing a simple RV connection through an L5-30P to TT-30R adaptor. Besides, due to the featured twist-lock L14-30R receptacle, the EF5500DE is transfer switch ready: you may connect it to a breaker box to power your household during a power outage.
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 featured design is ideal for the outdoors and all tough environments.
Although this generator is technically considered 'portable' (in the sense that it can be moved), its 243.7 lbs make it incredibly difficult to manually lift and transport. 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.
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.
A digital data center, one of the features of the EF5500DE's control panel, gives you information on the lifetime run hours, and thus, is helpful for the monitoring of its activity and status.
In addition to this info, when its oil levels are insufficient, you will be informed by the featured light indicator.
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 overload protection (circuit breaker) and an automatic low oil shut-off (Oil Watch system), 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.
The Yamaha EF5500DE 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, which makes it suitable for use in forested areas.
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 is your top priority, one of the champions in this power category is the Powerhorse LC4500i, weighing just 99 pounds.
- Among the generators of a comparable running wattage, this generator with a lowest noise of 74.1 dBA can be judged as noisy. If noise emissions are important to you, one of the least noisy generators of this power range is the Powerhorse LC4500i with only 57 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. 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.
- Run times are important, yet thanks to their dependence on the fuel capacity, they should be judged along with the fuel consumption of the device. 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 you wish to further improve in the area of fuel efficiency, the Pulsar PG5250B, which boasts with a gas consumption of only 0.33 GPH, may be the right generator for you.
As you can see from this interactive chart, when compared to other 4000-5000W generators, the Yamaha EF5500DE 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
- GFCI Outlets
- Remote start capable
- High run time
- Decent fuel efficiency
- On the expensive side
- On the heavy side (243.7 lbs)
- On the noisy side (74.1 dBA)
Features and Specifications
|Engine||358 cc Yamaha MZ360 OHV 4-stroke|
|Starting system||Recoil, Electric, Remote|
|Voltage||AC: 120/240V 60 Hz|
|Running watts||4500 W|
|Starting watts||5500 W|
|Running amps (@120/240V)||37.5/18.8 amps|
|Peaks amps (@120/240V)||45.8/22.9 amps|
|Run time @50% load||13.5 h|
|Run time @25% load||Unknown|
|Automatic Voltage Regulation||No|
|AC outlets|| |
|Data center||Lifetime run hours|
|Fuel tank||Metal, 6.9 gal|
|Approx. dimensions (L x W x H)||21.9 x 29 x 31.5 in|
|Noise (lower limit)||74.1 dBA|
|Security||Low oil and overload protection|
|Neutral||Bonded to frame|
|Accessories included||Tool kit, battery, and wheel kit|
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.
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.
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.
Questions & Answers
What can it power?
|Item||Running Watts||Starting Watts|
|At home||Microwave (1000 watts)||1500||1500|
|Electric fry pan||1500||1500|
|Refrigerator (energy star)||192||1192|
|Total||3592 W||4592 W|
|For camping||RV AC (11,000 BTU)||1010||1600|
|Total||3590 W||4180 W|
|For work||Table saw||1800||4500|
|Total||2780 W||5480 W|
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