Yamaha EF1000iS Review
This portable generator has a noise block feature, which is an acoustically designed sound reduction system that allows you to run the generator without disturbing most neighbors with noise.
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Always be ready for power outages through natural or man-made calamities. Keep the lights, freezers, fans, air conditioners and heaters running by using a portable generator. Choose a portable generator that’s powerful enough to power what appliances you need. These units should also pass clean air standards so it doesn’t harm the environment. The Yamaha EF1000iS 1,000 Watt 50cc OHV 4-Stroke Gas Powered Portable Inverter Generator (CARB Compliant) makes our list of best portable generators.
Features of the Yamaha EF1000iS:
- 900 Watt rated AC output
- 1,000 Watt maximum AC output
- Features a noise block
- Runs continuously for up to 12 hours without refueling
- Smart Throttle feature
- CARB Compliant
- Inverter system with PWM pulse Width Modulation
- Lightweight and easy to carry
- Combines powerful output with portability
- 66 gallon fuel capacity
- Backed by a 2-year warranty
Let us take a look at the features of the Yamaha EF1000iS 1,000 Watt 50cc OHV 4-Stroke Gas Powered Portable Inverter Generator (CARB Compliant). This Yamaha Portable Generator has a 900 watt rated AC output with a 1000 watt maximum output. This machine is lightweight and easy to carry and combines a powerful output with portability. It also has an inverter system that allows you to power delicate machinery. This portable generator has a noise block feature, which is an acoustically designed sound reduction system that allows you to run the generator without disturbing most neighbors with noise. Additionally, this generator is CARB compliant, so it passes carbon output level regulations in California.
The Yamaha EF1000iS can run continuously for up to 12 hours with one full tank of gas (66-gallon capacity) before needing to refuel. That’s maximized fuel efficiency and plenty of gas saved. It also has a Smart Throttle feature, which is a load sensing throttle control, that slows down the engine when there is a small load and speeds it up with a larger load. It also has an inverter system that features Pulse Width Modulation (PWM) that allows you to power delicate appliances, like computers or computer controlled tools without worrying about surges that can mess up your electronics. It is designed to be lightweight, easy to carry and extremely portable. Finally, the Yamaha EF1000iS comes with a 2-year warranty for the consumer’s peace of mind.
Customer reviews for the Yamaha EF1000iS:
REALLY quiet. The engine drives basically just an alternator and produces about 12V, though it varies. When there is a small load on the generator (typical of most camping / outdoor uses) it slows down the engine. This not only makes it quiet, it cuts back on fumes, and saves gas. A tank filling can last half a day easily depending on demand. – HMMWV “God, Country, Corps”
Reviews edited for size, click here for the full review
I wanted a smaller generator than the one built into my RV to save on gas and operate quieter. This little Yamaha did the trick. It can power my computer, battery chargers, and small appliances on its quiet, low power setting. I barely hear when it is running on low power if it is 50 feet from the RV. Uses only 1/2 gallon of gas if I run it all day, but you do need to go to a local Yamaha dealer and get the proper oil. – Viking
Reviews edited for size, click here for the full review
The Yamaha EF1000iS 1,000 Watt 50cc OHV 4-Stroke Gas Powered Portable Inverter Generator is a powerful and less noisy than portable generator. We like the smart throttle feature that can sense the appliance load and will speed up and slow down the engine when needed. Definitely a fuel saver. We also like that it is designed to be quieter than most generators even though it is a powerful one.
You can find the Yamaha EF1000iS 1,000 Watt 50cc OHV 4-Stroke Gas Powered Portable Inverter Generator in most hardware equipment and department stores in the country. For your convenience, you might want to buy it online. Amazon has several great deals on price and sometime even offers free shipping, try it here.
If you would like to read more on what other consumers have to say on the Yamaha EF1000iS 1,000 Watt 50cc OHV 4-Stroke Gas Powered Portable Inverter Generator, you can try here.


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