Yamaha EF2000iS Portable Generator
Yamaha EF2000iS is a 2000 watt and 4-stroke generator. This gas powered generator is very portable, efficient, and powerful in its energy consumption. This portable generator can produce 2000 watts of clean AC electricity because of its excellent inverter technology. One of the best features of this generator is it can operate continuously up to 10.5 without any refuelling. This implies that it is perfect for long power outages.
Yamaha EF2000iS - Why Consider It?
If you’re searching for a portable generator that is environment friendly, then this model is best for you. Yamaha EF2000iS features an inverter technology that allows it to produce high-quality and cleaner power compared to other generators on the market. It possesses an eco configuration that tapers down the throttle and noise of the engine when full load is not needed.
Yamaha EF2000iS is one of the most quiet portable generators that many people have used. It features an innovative sound-blocking design of noise-absorbing glass wool build and includes a vibration-isolating feet and a very quiet muffler. Professional testers have tried this generator, even at full speed of the engine and standing six feet away from the generator, they can normally talk to each other without their voice being raised. Then they tried it at half-throttle and less, and even from six feet away, it was half as loud like at full throttle. This portable generator excellent for home use!
Yamaha EF2000iS is an ideal portable generator if you want to use your power tools. Professional testers have used it to charge numerous power tools. The additional electricity that this generator produces can operate those power tools that the love.
Yamaha EF2000iS is the best generator to use if you want to go boating or camping. The noise pollution it produces is very low, and it is easy to use.
The only drawback with this model is that there is no oil level and there’s no dipstick, which makes it hard to determine how much oil to fill. It consumed less that 3/4 of a bottle oil. Yamaha EF2000iS is covered with a 2-year warranty.
Yamaha EF2000iS Best Features
Yamaha EF2000iS 2,000 Watt 79cc OHV 4-Stroke Gas Powered Portable Inverter Generator is defined as portable, powerful, and efficient. This has the capability to deliver a maximum electrical output even without compromising its portability. It is great that the inverter system can generate for up to 2,000 watts of an AC power. It can continuously run for up to 10.5 hours even if you do not refuel it. This is because it has a premium technology that maximizes the efficiency of the generator.
Powerful Inverter System
This is a generator that is built with an innovative inverter system. This system delivers a high quality and cleaner electricity compared to any other generators out there. The energy that it produces is in the form of sine waves that are pure. These waves are more reliable and cleaner than other commercial sources. To put it simply, you will have more confidence to power a delicate machine without getting worried about potential damage.
Optimal Fuel Efficiency
This generator is exceptionally efficient when it comes to fuel. It can run for up to 10.5 hours even without being refueled. The IOHV engine runs reliably and it dissipates heat. This way, it allows long life and optimum fuel consumption. It has a great feature that includes the Smart Throttle Load. This will enable the engine to speed up depending on its output that will result to optimum fuel efficiency. Furthermore, with its dual coil alternator stator, it decreases the speed of the engine and reduces the total consumption of the fuel.
User-Friendly
Yamaha EF2000iS weighs 44 pounds, is portable, and has an easy-to-carry design. With its convenience and centralized control panel, you can easily access the generator’s features. It will automatically start up because it has an auto-decompression system. This system will reduce the compression and this will make the start-up less difficult.
Noise Reduction for Quiet Operation
The noise reduction technology enables you to hear close to nothing during the operation. This is due to the sound-blocking design that helps in dampening the noise during a heavy operation. Along with that is the vibration-isolating feet and the super-quiet muffler that helps minimize the noise.

Yamaha EF2000iS vs. Yamaha EF1000iS
Yamaha EF1000iS is the predecessor of Yamaha EF2000iS. Let's find out what are their similarities and dissimilarities.
Yamaha EF1000iS Product Features
Similarities:
- portable and small
- silent operation
- efficient in gas consumption
- inverter system
- CARB compliant
- ergonomic design, and user-friendly
- 4-stroke
- gas-powered
- smart throttle
Dissimilarities:
Price
Yamaha EF2000iS sells at $989.00 Click here to check discount!
Yamaha EF1000iS sells at $791.00 Click here to check discount!
- their CC
- watts
- maximum time operation
- muffler
- noise level
Find out more about Yamaha EF1000iS here.
Comments/Feedback from Yamaha EF2000iS Users
High quality and very quiet!
I have had this for about several years. Yamaha EF2000iS is a high-quality portable generator, well-designed. I chosed this over the Honda Eu2000i because this is 2-pounds lighters and has a fuel gage. Specifications are very close, and it seems that they are both tie. The Yamaha EF2000iS is more quiet in eco throttle but the Honda Eu2000i is more quiet at full power. Before buying EF2000iS, I had purchased a Honeywell inverter generator from Costco which I returned, because it is noisy and I am not impressed. While the price is a big deal, you get what you pay for with this portable generator. - Trisailor T.
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Very quiet and CARB compliant...
Yamaha EF2000iS is very quiet and the engine runs very smooth. However, it does not include oil and the angle of the oil fill hole is almost horizontal, making it a bit hard to fill even with a funnel. To compensate this, they put a little drip tray below the opening so it won’t go anywhere. I also love the gas gauge. Overal, I am pleased with this portable generator. I does what I need, and I have no regrets. - Scott K.
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Works great at a good price than Honda...
Yamaha EF2000iS portable generator has seen a lot of use since I purchased this, lighting several lights, charging the battery of our RV, and running the refrigerator, all at the same time. We have used this to power up portable equipment like hedge trimmers and electric chain saw when there is a power outage. I love this generator, it’s nice and very quiet. However, it is not powerful enough to run a microwave and air conditioner. But it operates everything else perfectly. Overall, I have no complaints about this generator. Kudos! - Ethosian F.
Yamaha EF2000iS Ratings from Other Sites
reviews.northerntool.com - 4.5 stars
portablegeneratorsreviews.com - 4.5 stars
amazon.com - 5 stars
reviews.walmart.com - 5 stars
nextag.com - 4.5 stars
consumersearch.com - 4.5 stars
Yamaha EF2000iS - The Pros and Cons
Pros
- Portable and lightweight
- Can run smaller AC devices
- Silent, especially in eco mode
- Controls are very easy to use
- Perfect for light work
- Has a variable speed engine
- Starts on first pull
- The fuel gauge is very visible
Cons
- Slightly expensive
- Oil filler and oil are sold separately
Summary and Recommendation
Yahama EF2000iS is one of the best portable generators on the market. It is very small, lightweight, efficient, and powerful. It is a bit costly, but provides high-quality and innovative features, which are covered with 3-year warranty. This is the perfect solution for every home, boat, RV, outdoor use, during power outages or electricity is not available.
Yamaha EF2000iS Deals at eBay
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NEW YAMAHA EF2000IS PORTABLE PARALLEL INVERTER GENERATOR 2000 WATT | ![]() |
0 Bid | US $939.99 | 17h 41m |
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Brand New Yamaha EF2 Generator Dipstick Oil Filler Fuel Cap Package | ![]() |
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US $66.45 | 21h 36m |
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NEW YAMAHA EF2000iS INVERTER 2000 WATT GENERATOR | ![]() |
0 Bid | US $699.00 | 19h 40m |
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Yamaha Generator EF2000is OEM Maintenance Kit | ![]() |
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US $14.95 | 5d 7h 12m |
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NEW Genuine Yamaha Twin Tech Cable for EF2000iS Inverter Generator | ![]() |
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US $189.99 | 4d 8h 43m |
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