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Yamaha EF3000iS 3000 Watt Inverter Generator

Yamaha EF3000iS
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  • Free Shipping Type
  • Yamaha Standard Warranty
  • Add a Yamaha Extended Warranty
Price: $1,675.00

   Current Availability: OUT OF STOCK UNTIL JULY 10th 2019
Product Code: EF3000IS

Description Specifications Shipping & Terms

Genuine Factory New Yamaha Generators


The 3000 Watt EF3000iS weighs 136 pounds. Designed to be acoustically sound, this extremely quiet generator (53-60 dBA) features Smart Throttle which allows greater fuel efficiency and noise reduction. It will run up to 19 hours at ¼ rated load on a tank of gas. With features such as Built-In Wheels, Noise Block, and an Oil Watch Warning System, the EF3000iS is a powerful yet portable medium-range inverter!


  • Yamaha generators have the longest emission engine durability ratings issued by the Environmental Protection Agency and the California Air Resources Board.
  • Independent gasoline petcock helps reduce carburetor cleaning and repairs by eliminating stale gas in the carb.
  • The EF3000iS is equipped with advanced features and is extremely quiet yet smartly priced.
  • The EF3000iS includes Yamaha’s performance enhancing features, such as Inverter Technology, Smart Throttle, and Noise Block.
  • The EF3000iS is capable of producing clean, high-quality electricity with extremely quiet operation (53 dBA – 60 dBA).
  • This unit also features a fresh, ergonomic design with easy control access.
  • The EF3000iS features built-in wheels, so its remarkably portable - providing convenient power to the locations you need it most.
  • Yamaha’s Oil Watch Warning System helps prevent engine damage from low oil and provides added peace of mind.


  • Noise Block, acoustically designed sound reduction system ‐ Sound absorbing material, used in key locations, does not resonate sound. Newly designed muffler and molded fan produce unbeatable noise reduction at 53 - 60 dBA.
  • Independent gasoline petcock ‐ Helps reduce carburetor cleaning and repairs by eliminating stale gas in the carburetor.
  • Smart Throttle, load sensing rpm control ‐ Greater fuel efficiency and noise reduction by automatically adjusting engine speed to match the load.
  • Long run time ‐ Continuous operation for up to 18.6 hours without refueling (at 1/4 rated load with “Smart Throttle” function on).
  • 12 Volt DC output, battery charging cables included ‐ Recharge 12-volt batteries for RV, auto, marine, etc.
  • Inverter system with Pulse Width Modulation (PWM) control ‐ Can run products with built-in microcomputers, or microcomputer-controlled electric tools.
  • Centralized control panel ‐ Easy access to controls.
  • 171cc Overhead Valve (OHV) engine ‐ Noise-reducing operation with improved efficiency, increased reliability, and low oil consumption.
  • Oil Watch Warning system ‐ Prevents engine damage to avoid costly repairs and minimize down time adds customer confidence and peace of mind.
  • Four wheels with parking brake ‐ Easy transport and mobility.
  • EPA & CARB Emission Engine Life Rating ‐ Yamaha generators have the longest emission engine life ratings issued by the environmental.
  • Automatic decompression ‐ Greatly reduces starting effort.
  • Factory Warranty ‐ Covers the entire generator for defects in parts and workmanship for three (3) years.
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Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 38 Write a review »

  1 of 1 people found the following review helpful:
3 of 5 Careful, No Returns (AFTER) Fueling March 31, 2020
Reviewer: Alex V from TX United States  
Pay close attention to the specs.  I bought the EF3000iS Yamaha after comparing it to the Honda 3000iS line that has electric start.  I got it as expected and followed the instructions in the correct order.  Step 3 (after putting oil in) was to connect the battery, but I opened the battery compartment and there was no battery!  Turns out, I accidentally bought the non-electric start version.  I called to see what my options were and they said I own it because it has oil and gas in it and my only option is to try and sell it.  I get it, but now I am stuck with an expensive unused 130+ lbs generator that I have not been able to sell because nobody else wants it either.   Maybe I'll have to use it one day and it will be great, but it seems too heavy, low tech and expensive for a 3000watt generator.

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  0 of 0 people found the following review helpful:
5 of 5 Nice Unit] March 16, 2020
Reviewer: Marc St. Amour from Macungie, PA United States  
Generator is quiet and well built.

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  0 of 0 people found the following review helpful:
5 of 5 Easy and timely March 4, 2020
Reviewer: Kristy Fitzgerald from Frisco, TX United States  
When I placed the order, I never thought it would be delivered only a few days later. The delivery was quick and smooth. They did a great job communicating with me by email and phone. The reminder email to complete the warranty online was helpful too.

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  0 of 0 people found the following review helpful:
5 of 5 Yamaha EF3000iS Inverter Generator March 4, 2020
Reviewer: William Johnson from Cape Coral, FL United States  
I purchased this Yamaha EF3000iS generator from National Supply and could not be more satisfied with how the company handled the order, they were fast and efficient.

The Yamaha EF3000iS generator is a very well built quality product, I purchased this Yamaha EF3000iS for use in case of power outages, I live in Florida and if a Hurricane disrupts power I want a quality inverter generator that I know I can count on for many years to come.

I have been very impressed with how easy this Yamaha starts and how quiet it is. I starts right up each time I have started it testing it out to make sure everything is ok with it.

I highly recommend both National Supply and Yamaha generators.

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  0 of 0 people found the following review helpful:
5 of 5 January 22, 2020
Reviewer: Mike Simon from Fountain Hills, AZ United States  

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