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Yamaha EF3000iS 3000 Watt Inverter Generator
Yamaha EF3000iS
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Price: $1,799.00

   Current Availability: In Stock - Orders Received by 2PM PST Ship Same Day - SEE REDUCED PRICE IN SHOPPING CART

Description Specifications Shipping & Terms

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.
Inverter or Generator? What is the difference?
Yamaha Versus the Competition - WHY YAMAHA?
How to choose the right size Generator.
Average Rating: 5 of 5 Total Reviews: 23 Write a review »

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  0 of 0 people found the following review helpful:
The price was great March 20, 2018
Reviewer: David Marion from Cold Spring, NY United States  
In stock when everybody else was out of stock. The only thing I was disappointed in was the delay in arrival. I called before I ordered and was told 5-days to the East Coast. We're not in a rural area and we're only 15 minutes away from the carriers terminal and it still took 11-days

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  0 of 0 people found the following review helpful:
Excellent specs compared to its competitor November 4, 2017
Reviewer: Anonymous Person from Hialeah, FL United States  
more warranty and features than the eU3000I

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  0 of 0 people found the following review helpful:
Great Product for the Price June 14, 2017
Reviewer: Joseph Fietek from Park River, ND United States  
I purchased this generator to run my camper and had done a lot of research.  It came down to this and the Honda.  For the price I cannot be more pleased.  The noise was minimal and I can have a conversation standing outside right by it.  It starts first or second pull every time and powered everything I needed.

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  0 of 0 people found the following review helpful:
cover December 11, 2016
Reviewer: Daniel Hunter from Williston, FL United States  
Fits good water tight

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  2 of 2 people found the following review helpful:
Exactly what I needed for my RV August 5, 2016
Reviewer: Michael Lee from Alpharetta, GA United States  
I compared the Yamaha 3000is to the Honda 3000EU. In my opinion the Yamaha is a much better generator for the money. A lot of people recommended the Honda to me including the Head Mechanic at the RV dealer. I compared the two generators but for the price and the features the Yamaha just is a better deal.
It is very heavy but well built the quality is amazing. I did not see one in a store near me. so I had to go by what I had read on the internet. National Supply was terrific to work with and their price was by far the lowest. I am running the generator right now to charge my batteries plus it runs my 13.5btu ac with no problems! The main reason I chose this size was so I could dry camp and have ac. I could not be more happy with my purchase and I highly recommend National Supply as a Yamaha Dealer!

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