Zoom on the Yamaha EF5500D
In summary, the Yamaha EF5500D is a portable generator especially useful for:
- RV travellers looking for even more independence
- People occasionally participating in outdoor fairs, festivals or events
- Homeowners in need of an emergency backup power for their essentials
- Professionals in need of safely powering high-intensity work or lighting equipment
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 EF5500D 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.
Enjoying a noise rating of 74.1 dBA (just slightly more noisy than a dishwasher), this generator gets running thanks to a simple traditional pull-start mechanism.
The EF5500D can operate for around 13.5 hours at 50% load with a full tank (fuel consumption around 0.51 GPH), due to its fuel capacity of 6.9 gallons.
The control panel provides the upcoming 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, due to the featured twist-lock L14-30R receptacle, the EF5500D is transfer switch ready: you may connect it to a breaker box to power your household during a power outage.
The Yamaha EF5500D 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 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. 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.
A lift hook, which is on the top of the frame, serves as an extra safety feature for the transport, unloading and loading of the device.
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, the device’s light indicator will display if the oil level is too low.
A built-in fuel gauge allows for a quick, easy and convenient check of the fuel level of the generator.
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 EF5500D's packaging.
The Yamaha EF5500D 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.
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).
- As its dry weight is 221.7 pounds, the Yamaha EF5500D is one of the heavier of the products which can generate 4000 to 5000 running watts. Regarding dry weight, one of the champions in the same power range is the Pulsar PG5250, with a dry weight of only 99.5 lbs.
- If compared to generators capable of producing a similar running wattage, this generator with a lowest emitted noise of 74.1 dBA can be considered somewhat noisy. 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.
- Thanks to an impressive running time of around 13.5 hours at 50% load, the EF5500D benefits from a higher run time than many generators of a similar 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.
- 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 you are concerned with gasoline efficiency, having a fuel consumption of just 0.33 GPH, the Pulsar PG5250B is a device you should look out for.
The bottom line
- 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|
|Peak 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 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 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||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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