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Yamaha EF4500iSE Inverter Generator

Availability: Out of stock

$3,059.10 Add to Cart to See Price.

The EF4500iSE picks up where the extremely successful EF3000iSE leaves off, with even more power and fuel efficiency in a quiet, portable package. It boasts 4500 watts/33 amps @ 120 volts of maximum power, suitable for running an RV 15,000 btu air conditioner and 1000 watt microwave oven, or two other major RV appliances simultaneously. It's super quiet, 58-60 dBA. Features an effortless Electric Start – turn the key to start. Has up to 15.2 hours running time at one quarter rated load between refueling.


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4500 watts/37.5 amps. Power, efficiency, and quiet operation make this an RV owners ultimate accessory.

  • •4500 watts of maximum output
  • •Super Quiet 58~60 decibels.
  • •Low Speed Running – runs at a constant speed of 2600 rpm to reduce gasoline consumption, noise and engine wear.
  • •Runs up to 15 hours at 1/4 load on one tank of gas.
  • •Pulse Width Modulation Inverter System – Ideal for runnign computers, televisions, satellite TV systems and other sensitive electronic equipment and appliances.
  • •OPTIONAL Wireless Remote Start
  • •Electric Start
  • •Automatic Choke
  • •Low Oil Shutdown
  • •Power Meter
  • •Hour Meter
  • •Twin Bar – Aids in lifting and loading. Also utilize for transport and anti-theft security.
  • •Gas gauge
  • •Four wheels with parking brake for easy transport and security.
  • •50 State Compliant - Meets CARB emission regulations


Additional Info

Manufacturer Part Number EF4500ISE
Engine Type OHV, Air-Cooled, Four-Stroke, Single Cylinder
Engine Displacement 357 cc
Starting System Electric start w/ automatic choke
Ignition System TCI: Transistor Controlled Ignition
Oil Capacity 1.37 qt
Fuel Tank Capacity 4.5 gal.
Continuous Operation Time 15.2 hours at 1/4 Rated Load
Maximum AC Output 4500 watts
Rated AC Output 4000 watts
DC Output n/a
Rated AC Current 37.5/33.3 amps @ 120V
Parallel Capable No
Rated Voltage 120V
Frequency 60 hz
Receptacles 120V 20A Duplex, L5-30R 120V 30A Twist
Noise Level 58-60 dBA
Dry Weight 194
Overall Dimensions 30.7 in X 24.3 in X 27.2 in
Residential Warranty 3 years
Commercial Warranty 1 Year
Emissions Compliance 50 State Compliant
Ships Via Freight


Seems greatReview by Dave
I thought it was louder than the larger Honda generator, but it works for me pretty well so far. A little on the heavy side, but I guess that's what you get when you get one this size. (Posted on 12/18/14)
Quality generator but nothing special about dealerReview by Travis
Good generator and shipped quick. It would have been nice if the dealer threw in a bottle of oil. I had to go to the dealer before I could test it. I tried to buy a bottle with my purchase but the model I purchased was not on the list for the oil. A little extra service goes a long way with me and most dealers are about the same price. I will probably spend my money with a company that will go that extra step to satisfy their customers next time. (Posted on 1/22/14)
Quiet and cheap to runReview by Peter
The unit being a inverter type only runs at 2500 rpm for normal loads,and reves up when needed saving on fuel,while the older type generators have to run at 3600rpm to get the proper AC cycle to run your household appliances (Posted on 12/26/13)
great price , fast shippingReview by timflynn
Easy ordering and great price with fast shipping (Posted on 11/12/13)
Nice UnitReview by dreiley
We use this generator at a private island in the Gulf of Mexico. It will run out 30' RV camper, full size fridge and the water well pump. Extremely quiet, it is a little on the heavy side. It would be nice if one of the front wheel sets castered. (Posted on 8/13/13)
OutstandingReview by GR
On our first outing we needed to use the generator 45 hours straight. It performed flawlessly. Temperatures were in high 80's with very high humidity. We ran a 13,500 BTU A/C unit, refrigerator, & lights withoug any problems. Runs quite. Very pleased. (Posted on 7/29/13)
Yamaha 4500 inverterReview by Theresa
Great product, very quiet. An asset to our houseboat. (Posted on 4/19/13)
Couldn't be happierReview by Brian W.
This is one fantastic generator. Standing about 5 feet away while it's running, you can carry on a normal conversation. Cannot hear it from inside the house. I've powered two computer systems, a window AC, fridge and freezer at the same time, and it only lists two bars of power used, plenty to spare. Highly recommended. It's been running outside during heavy rain, no problems. Easy to maintain too, good 3 year warranty. Don't waste your money on junk, go with quality - either Honda or Yamaha. After researching for weeks, I went with Yamaha, and I'm glad I did. (Posted on 4/12/13)
PerfectReview by Tom S.
I purchased this generator for my travel trailer. I am running a 15,000 BTU air conditioner and the unit I had did not have the capacity to satisfy the trailer's electrical needs.

This unit performs tremendously! It is quiet, starts with the turn of a key and maintains clean voltage. (Posted on 4/12/13)

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Shipping Information


Shipping Information

Below is a basic overview of our typical Shipping and Delivery Policies. Please note for "Free Shipping" it is our intention to get your purchase to you as quickly as is financially feasible.

Shipment Transit Times: We are located in Schaumburg, IL and ship most products from our warehouse. Transit Times vary based on the size of product purchased and the distance from our warehouse. Here is a color coded chart with our approximate transit times.

Processing Times: Products that ship via Ground are typically processed by the next business day. Freight items are given 1 business day lead time. These standards are subject to item availability and shipping method chosen at checkout.

Expedited Shipping: products under 150 lbs (ship weight) may be expedited by selecting an expedited shipping method in checkout and paying an extra fee. Freight items cannot be expedited via our website checkout. For expedited freight orders, please call (800) 916-9473 to get a freight quote. Expedited shipping may not be available in all areas.

Typical delivery times per carrier:

  • UPS: 1-5 business days within the contiguous United States. Upgrades available for 3 Day , 2 Day and Next Day Air; see checkout for prices.

If you have any questions related to our shipping policies or need a special quote, please call our Shipping Department at (800) 916-9473.

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