Product Code: EF2200iS_Combo

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$2,698.00$2,340.00Save 13%
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EF2200iS Combo 2x2200 Watt Inverter Generator with CO Sensor
The 2x2200 Watt EF2200iS Combo is the perfect power combination to run your RV. Each EF2200iS incorporates a completely new controller with advanced programming, allowing the EF2200iS Combo the ability to power a much wider range of applications. Among the quietest portable generators in its class, each EF2200iS features Smart Throttle which allows greater fuel efficiency and noise reduction. This combo will run up to 10.5 hours at ¼ rated load on a tank of gas. With features such as visible Fuel Gauge, Parallel Function, and an Oil Watch Warning System, the EF2200iS Combo is the perfect companion for RV owners and households! (2) Yamaha EF2200IS Generators (1) Parallel Cable

Top Features

CO Sensor for Safety
Shuts off at high level CO detection
High Output Engine
Powerful Yamaha MZ80 engine
Yamaha Quiet Technology
Super quiet engine operation
Twin Tech Parallel Function
Connect two EF2200iS together

Additional features

  • Powerful Yamaha 79cc Engine - Provides high power output.
  • Yamaha Quiet Technology - Outfitted with Yamaha sophisticated muffler for quiet operation.
  • Twin Tech Parallel Function - Connect two EF2200iS generators in- line with a Twin Tech cable for rated 30 AMPS of power.
  • Standard RV Outlet - No more searching for the right adapter.
  • Tri-Handle - Makes loading, unloading and moving the unit a breeze.
  • Smart Dial Knob - Simple and easy start-up.
  • Smart Throttle - Automatic load sensing adjusts power to device needs.
  • Illuminated Multi-Function LED Display - See generator status at a glance both day and night.
  • DC Outlet - Flexibility to charge and use devices.
  • Overload Reset Button - Easily restore power without shutting down the unit.
  • Yamaha Easy Carb Drain - Prevents stale fuel issues and prepares for long term storage.
  • Tool-less Rear Panel - Easily access engine compartment and perform maintenance.
  • Fuel Gauge - Easily see fuel level at-a-glance.


Type Inverter
Maximum AC Output 2200 Watts
Rated AC Output 1800 Watts
Rated / Maximum AC Current 15 / 18.3 amps @ 120V
Engine OHV, air-cooled, single cylinder, 4-stroke
Displacement 79cc
L x W x H 21.9 x 11.8 x 18.5 in
Dry Weight 55.2 lbs
DC Output 3 amps @ 12V
Fuel Tank Capacity 1.24 gal
Continuous Operation at 1/4 Rated Load 10.5 hrs
Noise Level (1/4 Load - Rated Load) 57-65 dBA
Warranty 3 Years Limited Warranty
Color Blue

Customer Reviews

Based on 34 reviews
Anthony P.
Love my new generators

These generators preformed flawlessly. Great power and option to use one or two, as needed. Exactly what I needed. Great purchase experience also. Thank you!

John C.

Awesome experience!! Super fast shipping, great communication, excellent transaction!

Dave P.
Great Experience

Fast service, shipping and follow up

Verified C.
Purchase of Yamaha generators

I ordered two generators on-line after talking to a representative by phone and the generators arrived the NEXT DAY! Not only was the delivery incredibly prompt but the phone representative took several of my calls to answer follow-up questions. Could not have been a better experience!

Verified C.
Yamaha dual generators

First I think it was Andrew who took my call when I had questions about these generators. He was extraordinarily helpful and efficient. He sealed the deal. So we bought them. They started right up. We are very happy with them. The lower level of use made the decibel level acceptable.

Denise A.
Best part of purchase was Larry

I am hopeful these will be great in an emergency although I would have preferred an electric starter. Larry made the order process and first start a breeze!

John L.
Pretty good generators

The seem to work well, however one of them uses fuel more quickly and does not run at constant speed but speeds up and slows down even if there is no load. I tried charging my John Deere electric Gator with that generator, however the 48V charger failed and tripped the generator breaker. I don’t know why the charger failed. The charger uses only 1kW of AC power so it is unlikely that the charger overloaded the generator. Service department told me if I had problems with the generator I should take it to their local service shop.

Verified C.
Yamaha 2200 Inverters

I recently purchased two of these for use with a travel trailer. Communication with vendor was good, and delivery was as promised. Well done!

Richard D.
Great for RV air conditioner

The Yamaha EF2200Ois combo inverter generator ran my 3000w RV air conditioner unit great. I had no problems starting or running it. Having two generators that I can lift independently is way better than one larger generator that I can't lift by myself.

Thank you National Supply!

EF2200iS Generator

Called in on a Monday and had my generators buy Thursday just in time for my trip. Packed very good no damage and they had excellent customer service. Will use again if ever needed .

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