Zoom on the Yamaha EF5500D
In a nutshell, the Yamaha EF5500D is a portable generator mostly geared towards:
- RV travellers wishing to enhance their freedom and nomad lifestyle
- Occasional participants of outdoor events, competitions, concerts and festivals
- 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
Power & Run Time
The Yamaha EF5500D's engine, 358 cc Yamaha MZ360 OHV 4-stroke, fueled by gasoline, can deliver 120/240V. It provides a running wattage of 4500W and reaches a peak wattage of 5500W.
With a noise rating of 74.1 dBA (just slightly more noisy than a shower), the generator features a conventional pull-start mechanism.
The fuel capacity of 6.9 gallons allows the EF5500D to operate for around 13.5 hours at 50% load with a full tank (fuel consumption around 0.51 GPH).
The control panel features the following 6 AC outlets:
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, because the EF5500D is equipped with a twist-lock L14-30R receptacle, it is transfer switch ready: it can power your home during a power outage, as it can be easily connected to your breaker box to power your household.
With its dimensions of L21.9 x W29 x H31.5 in, the conventional, open frame design of the Yamaha EF5500D offers stability and allows the generator to be raised above ground level. The design is ideal for rough environments and demanding outdoor use.
Although this generator is technically considered 'portable' (in the sense that it can be moved), its 221.7 lbs make it incredibly difficult to manually lift and transport. 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.
A digital data center, one of the features of the EF5500D’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 fuel level of the generator can be determined quickly, easily, and conveniently with the help of its 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 EF5500D's packaging.
The Yamaha EF5500D 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, which makes it suitable for use in forested areas.
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).
- A weight of 221.7 lbs makes the Yamaha EF5500D one of the heavier devices in the 4000-5000 rated wattage range. 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 noise emissions are important to you, one of the least noisy generators of this power range is the Yamaha EF4500iSE with only 58 dBA.
- Since the EF5500D 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 autonomy is your priority, one of the devices of a similar power output with the highest run time is the Dewalt DXGN4500, reaching 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. 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 not satisfied with the afore-mentioned fuel consumption, you may wish to check out the Pulsar PG5250B. With a fuel consumption of as little as 0.33 GPH, it is one of the most efficient generators currently on the market.
As you can see from this interactive chart, when compared to other 4000-5000W generators, the Yamaha EF5500D 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
- In the expected price range
- GFCI Outlets
- High run time
- Decent fuel efficiency
- No electric start
- On the heavy side (221.7 lbs)
- On the noisy side (74.1 dBA)
Features and Specifications
|Engine||358 cc Yamaha MZ360 OHV 4-stroke|
|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|
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 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?
|Item||Running Watts||Starting Watts|
|At home||Dish washer||1500||3000|
|Electric fry pan||1500||1500|
|Refrigerator (energy star)||192||1192|
|Total||3592 W||5092 W|
|For camping||RV AC (11,000 BTU)||1010||1600|
|Total||3590 W||4180 W|
|For work||Table saw||1800||4500|
|Electric fence (25 miles)||250||250|
|Total||2780 W||5480 W|
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