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 outdoor fairs, festivals or events
- Homeowners in need of an emergency backup power for their essentials
- Professionals who want to ensure that a power failure will not prevent them from working
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.
At a noise rating of 74.1 dBA (just slightly more noisy than a dishwasher), this generator can be started via a simple traditional pull-start mechanism, or a convenient and easy-to-use electric starter (battery included). 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).
The control panel includes the following 6 AC outlets:
Even if this Yamaha generator isn't quite RV Ready, it still allows for an easy RV connection via an L5-30P to TT-30R adaptor, thanks to its L5-30R receptacle. Besides, since the EF5500DE bears a twist-lock L14-30R receptacle, it is transfer switch ready: it is easily connectible to a breaker box and can power your home in case of a power outage.
The Yamaha EF5500DE has a conventional, open frame design, of the following dimensions: L21.9 x W29 x H31.5 in, which offers support and allows it to be raised above ground level. The generator is designed for ideal use outdoors and in rough environments.
Since the generator weighs 243.7 lbs, it will be incredibly difficult to manually lift it and transport it, even though it is technically considered to 'be portable' (in the sense that it is movable). However, this lack of maneuverability is compensated by its wheel kit and its folding handle, with which you can conveniently shift 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.
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 thus, helps you monitor 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 standpoint, the product offers an overload protection (circuit breaker) and an automatic low oil shut-off (Oil Watch system), allowing you to use it with a peace of mind.
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. Thus, selling and purchasing this generator is allowed in each of the 50 states, including California.
Moreover, it features a spark arrestor, making it usable 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 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.
- Since the EF5500DE 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. 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 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. As this generator uses an estimated 0.51 GPH (gallon per hour) at a 50% load, it finds itself in the average gasoline consumption range of similar products. If you wish to acquire one of the most gasoline efficient products of this power range, the Pulsar PG5250B, with a fuel consumption of 0.33 GPH could be in your good books.
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||N/A|
|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 and battery|
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||Sump pump (1/2 hp)||1050||2150|
|Furnace fan (1/2 hp)||875||2350|
|Refrigerator (energy star)||192||1192|
|Total||3587 W||5062 W|
|For camping||Radiant heater||1300||1300|
|Pair of small speakers||45||45|
|Total||3595 W||4015 W|
|For work||Table saw||1800||4500|
|Electric fence (25 miles)||250||250|
|Total||2780 W||5480 W|
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