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Description
Zoom on the Yamaha EF4500iSE
In summary, the Yamaha EF4500iSE is a quiet portable inverter generator especially useful for:
- 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 sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
- Tailgating and campground aficionados with the desire of enjoying power anywhere they go
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 EF4500iSE
The Yamaha EF4500iSE's core is the 357 cc Yamaha MZ360 OHV 4-stroke engine, which runs on gasoline. With an output of 120V, it provides a running wattage of 4,000W and a peak wattage of 4,500W.
At a noise rating of 58 dBA (less noisy than a quiet suburb), the inverter generator is started via a simple and elegant electric starter (battery included).
This generator features Yamaha's Smart Throttle™. This load-sensing feature automatically adjusts engine speed to match its load in order to offer greater fuel efficiency and noise reduction.
The fuel capacity of 4.5 gallons allows the EF4500iSE to operate for up to 15.2 hours with a full tank (fuel consumption around 0.3 GPH).
Delicate electronics can be plugged in an AC outlets safely, as the EF4500iSE generates a clean sine wave, reaching a <3% Total Harmonic Distortion (THD).
Outlets
The control panel features the upcoming 3 AC outlets:
This Yamaha generator features an L5-30R receptacle, enabling an easy RV connection via an L5-30P to TT-30R adaptor. However, it is still not quite RV ready.
Portability
Since the Yamaha EF4500iSE is an inverter generator, its closed design (L30.7 x W24.3 x H27.2 in) has an esthetical advantage over conventional, open frame devices. The generator has a contemporary design, convenient for recreationally generating power.
Although this generator is technically considered 'portable' (in the sense that it can be moved), its 209 lbs make it incredibly difficult to manually lift and transport. Nevertheless, it can still be moved quite conveniently with the help of its set of 4 wheels and its double handle, once it is placed on the ground.
Features
The EF4500iSE's control panel
A digital data center, one of the features of the EF4500iSE's control panel, gives you information on the power output and lifetime run hours, and thus, is helpful for the monitoring of its activity and status.
In addition to this info, some light indicators allow you to instantly see if the generator is ready, its oil levels are insufficient and the generator is on overload.
The inverter generator includes a built-in fuel gauge, a quick, easy and convenient method of checking the device’s gas level.
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.
It also includes a carbon monoxide sensor. This sensor is designed to monitor the level of carbon monoxide present during the generator's operation. If the generator is positioned incorrectly and carbon monoxide levels rise to an unsafe level, the generator will automatically shut down.
As for its accessories, apart from the previously mentioned features, the Yamaha EF4500iSE also comes with the basic documentation and an owner's manual (opens in a new tab), allowing you to start it right away. An official storage cover is available, as a separate purchase.
Emissions
The Yamaha EF4500iSE 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 and therefore, can be used in forested areas.
Product Videos
The Yamaha EF4500iSE versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Yamaha EF4500iSE compare to inverter generators of similar power (between 3500 and 4500 W).
- At a dry weight of 209 pounds, the Yamaha EF4500iSE is one of the heavier inverters which can produce between 3500 and 4500 running watts. In terms of weight, one of the champions in their power range is the WEN GN400i, standing at just 66.1 lbs.
- With a lowest noise rating of 58 dBA, the inverter generator is one of the more quiet of the generators of similar type and power. If noise emissions are important to you, one of the least noisy generators of this power range is the Westinghouse iGen4500DF with only 52 dBA.
- As for its autonomy, the EF4500iSE, with an autonomy of up to 15.2 hours at a 25% load, is placed on the low end among the generators of its kind. Concerning the run times, one of the several devices with a comparable output, offering the highest autonomy, is the Firman W03661OF, which is able to run for up to 25 hours.
- The run time is important, but also hugely depends on the capacity of the fuel tank and doesn't mean much if we don't talk about fuel consumption as well. In fact, this inverter generator is not among the most fuel efficient, within the aforementioned wattage range : its estimated gasoline consumption at 25% load is around 0.3 GPH. If you wish to further improve in the area of fuel efficiency, the Champion 200988, which boasts with a gas consumption of only 0.16 GPH, may be the right generator for you.
Price comparison
As you can see from this interactive chart, when compared to other 3500-4500W inverter generators, the Yamaha EF4500iSE 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
- CO Sensor
- Electric start
- Inverter
- Quiet for its power (58 dBA)
- Made in Japan
- On the expensive side
- No recoil back-up
- No remote start
- No parallel ports
- On the heavy side (209 lbs)
- Relatively low run time
- Low fuel efficiency
Features and Specifications
| Inverter | Yes |
|---|---|
| Parallel capable | No |
| RV ready | No |
| Fuel | Gasoline |
| Engine | 357 cc Yamaha MZ360 OHV 4-stroke |
| Starting system | Electric |
| Warranty | 3 years |
| Voltage | AC: 120V 60 Hz |
|---|---|
| Running watts | 4,000 W |
| Starting watts | 4,500 W |
| Running amps | 33.3 amps |
| Peak amps | 37.5 amps |
| Run time @50% load | Unknown |
| Run time @25% load | 15.2 h |
| GFCI outlets | No |
|---|---|
| Covered outlets | No |
| Automatic Voltage Regulation | Inverter |
| AC outlets |
|
| DC outlets | No |
| Data center | Power output and lifetime run hours |
| Indicators | Low oil, overload and output ready |
| Fuel tank | Plastic, 4.5 gal |
| Fuel gauge | Yes |
| Weight | 209 lbs |
|---|---|
| Approx. dimensions (L x W x H) | 30.7 x 24.3 x 27.2 in |
| Noise (lower limit) | 58 dBA |
| THD | < 3% |
| Compliance | CARB, EPA |
| Security | Low oil and overload protection, CO monitoring |
| Spark arrestor | Yes |
| Neutral | Floating |
| Accessories included | Battery |
| Country of origin | Japan |
| Other model numbers | EF45ISEZ |
| UPC | 765053833196 |
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, many of their models are made in China, rather than Japan.
Warranty Information
The Yamaha EF4500iSE 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 | AC (10,000 BTU) | 1500 | 2200 |
| Microwave (1000 watts) | 1500 | 1500 | |
| Refrigerator (energy star) | 192 | 1192 | |
| Total | 3192 W | 4192 W | |
| For camping | RV AC (11,000 BTU) | 1010 | 1600 |
| RV refrigerator | 180 | 600 | |
| Hair dryer | 1800 | 1900 | |
| Mixer | 200 | 200 | |
| Total | 3190 W | 3780 W | |
| For work | Grinder | 1400 | 2500 |
| Demolition hammer | 1260 | 1260 | |
| Drain cleaner | 250 | 250 | |
| Electric fence (25 miles) | 250 | 250 | |
| Total | 3160 W | 4260 W |
Is it made in China? (Asked November 10, 2020)
The EF4500 is made in Japan.
Couldn't find the right answer for you? Ask your own question.
