Best Fuel Efficient Generator for 2022: Our Top 15 Picks

Sometimes it might be quite difficult to find the best fuel efficient generator. With every niche market offering so many different products, it makes sense that this is the case.

Unfortunately, this very fact can make it incredibly difficult to find the item that best suits your needs, which is why we’ve put together this fuel efficient generator buying guide.

Quick Picks:

# Preview Product
1 WEN 56380i Super Quiet 3800-Watt RV-Ready Portable Inverter Generator with Fuel Shut-Off and Electric Start WEN 56380i Super Quiet 3800-Watt RV-Ready Portable Inverter Generator with Fuel Shut-Off and...
2 Honda EG2800i 2800W 120V Full Frame Portable Inverter Gas Generator Honda EG2800i 2800W 120V Full Frame Portable Inverter Gas Generator
3 DIY Biogas: Make and Use Your Own Renewable Natural Gas DIY Biogas: Make and Use Your Own Renewable Natural Gas
4 Westinghouse 4500 Watt Super Quiet Portable Inverter Generator, Remote Electric Start with Auto Choke, Wheel & Handle Kit, RV Ready, Gas Powered, Parallel Capable Westinghouse 4500 Watt Super Quiet Portable Inverter Generator, Remote Electric Start with Auto...
5 Wood Gasifier: A STEP-BY-STEP GUIDE ON HOW TO BUILD YOUR WOOD GASIFICATION SYSTEM. HOW TO MAKE ENERGY AND FUEL OFF THE GRID. Wood Gasifier: A STEP-BY-STEP GUIDE ON HOW TO BUILD YOUR WOOD GASIFICATION SYSTEM. HOW TO MAKE...
6 Honda EU3200i 3200 Watt 120V Portable Inverter Generator with CO-Minder - Super Quiet, Lightweight, Fuel Efficient Honda EU3200i 3200 Watt 120V Portable Inverter Generator with CO-Minder - Super Quiet, Lightweight,...
7 Generac 7127 IQ3500 3,500-Watt Gas-Powered Portable Generator, 50-State/CARB Compliant Generac 7127 IQ3500 3,500-Watt Gas-Powered Portable Generator, 50-State/CARB Compliant
8 WEN 56235i Super Quiet 2350-Watt Portable Inverter Generator with Fuel Shut Off, CARB Compliant, Ultra Lightweight, Black WEN 56235i Super Quiet 2350-Watt Portable Inverter Generator with Fuel Shut Off, CARB Compliant,...
9 Champion Power Equipment 100891 9375/7500-Watt Dual Fuel Portable Generator, Electric Start Champion Power Equipment 100891 9375/7500-Watt Dual Fuel Portable Generator, Electric Start
10 WEN DF475T Dual Fuel 120V/240V Portable Generator with Electric Start Transfer Switch Ready, 4750-Watt, CARB Compliant WEN DF475T Dual Fuel 120V/240V Portable Generator with Electric Start Transfer Switch Ready,...
11 Bi‑Directional Converter, Bi‑Direction Converter Module, DC 9‑30V NMEA2000 and NMEA0183 KC‑2W Universal IPX67 Waterproof Bi‑Directional Converter, Bi‑Direction Converter Module, DC 9‑30V NMEA2000 and NMEA0183...
12 Hybrid, Electric and Fuel-Cell Vehicles (MindTap Course List) Hybrid, Electric and Fuel-Cell Vehicles (MindTap Course List)
13 EF ECOFLOW Delta Pro 9KWh/3600W Home Backup Power with 4L Unleaded Gasoline & LPG Smart Dual Fuel Generator, Portable Power Station with Handle&Wheels for Outdoors RV High-Power Appliances Emergency EF ECOFLOW Delta Pro 9KWh/3600W Home Backup Power with 4L Unleaded Gasoline & LPG Smart Dual Fuel...
14 Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered, CARB Compliant Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer...
15 DuroMax XP12000EH Generator-12000 Watt Gas or Propane Powered Home Back Up & RV Ready, 50 State Approved Dual Fuel Electric Start Portable Generator, Black and Blue DuroMax XP12000EH Generator-12000 Watt Gas or Propane Powered Home Back Up & RV Ready, 50 State...

15 Top Fuel Efficient Generator Reviews:

SaleBestseller No. 1
WEN 56380i Super Quiet 3800-Watt RV-Ready Portable Inverter Generator with Fuel Shut-Off and Electric Start
  • Dimensions: 23.2" L x 18" W x 20.1" H | Weight: 99.2 lb.Dimensions: 23.2" L x 18" W x 20.1" H | Weight: 99.2 lb
  • Extremely quiet operation minimizes noise;, EPA III and CARB Compliant
  • 212cc 4-stroke OHV engine produces 3800 surge watts and 3400 rated watts with a half-load runtime of up to 8.5 hours
  • Fuel shutoff maximizes the generator’s lifespan by using up the remaining fuel in the carburetor before shutting down
  • Produces clean power to prevent damage to sensitive electronics such as smart phones, tablets and laptops
Bestseller No. 2
Honda EG2800i 2800W 120V Full Frame Portable Inverter Gas Generator
  • 2800 watts, 120V
  • Trusted, quiet power for home back up
  • Lightweight and portable
  • Inverter - Fuel efficient, quality power for sensitive equipment & electronics
Bestseller No. 3
DIY Biogas: Make and Use Your Own Renewable Natural Gas
  • Amazon Kindle Edition
  • Scheckel, Paul (Author)
  • English (Publication Language)
  • 102 Pages - 09/20/2022 (Publication Date) - Parsec Energy Consulting (Publisher)
SaleBestseller No. 4
Westinghouse 4500 Watt Super Quiet Portable Inverter Generator, Remote Electric Start with Auto Choke, Wheel & Handle Kit, RV Ready, Gas Powered, Parallel Capable
  • 4500 Peak Watts and 3700 Rated Watts at Less Than 3% THD; Telescoping Handle; Gas Powered; Remote Start With Included Key Fob, Electric and Recoil Start
  • Features a 5–20R 120V Duplex Household Outlet, an RV-Ready Tt-30R 30 Amp Outlet and Two USB Outlets – Great Choice for Travel Trailers or Home Use – Strong Enough to Run All Your Essentials
  • Led Data Center: Rotating Digital Display Shows Fuel Level, Power Output, Remaining Run Time, Voltage Output, and Lifetime Hours
  • Extremely Quiet, Extremely Fuel Efficient: as Low as 52 dBA Noise Output and Up to 18 Hour Run Time on a 3. 4 Gallon Gas Tank – Features “Economy Mode” for Maximum Fuel Efficiency
  • All Westinghouse Portable Generators are Functionally Tested in the Factory and May Contain Minimum Residual Oil and/or Fuel Odor; EPA and CARB Compliant; Backed By 3-Year Limited Service, Labor, and Parts Coverage and Nationwide Customer Service Network
Bestseller No. 5
Wood Gasifier: A STEP-BY-STEP GUIDE ON HOW TO BUILD YOUR WOOD GASIFICATION SYSTEM. HOW TO MAKE ENERGY AND FUEL OFF THE GRID.
  • Amazon Kindle Edition
  • Mask, Robert (Author)
  • English (Publication Language)
  • 128 Pages - 04/19/2021 (Publication Date)
Bestseller No. 6
Honda EU3200i 3200 Watt 120V Portable Inverter Generator with CO-Minder - Super Quiet, Lightweight, Fuel Efficient
  • 3200 Watts of Portable Power - The EU3200i can operate a wide variety of appliances, including a furnace, fridge, microwave, RV AC, and much more.
  • Compact & Lightweight Design - At less than 60 lbs, the EU3200i is lightest, most compact 3000 watt series generator we've ever made. Two integrated handles make if easy to lift, carry, and store.
  • Easy Starts & Simple Operation - Quick and easy 2-step chokeless starting: just turn on and pull for instant power.
  • Exceptional Fuel Efficiency - Thanks to Honda's exclusive Eco Throttle System, the EU3200i offers great fuel efficiency. Runs up to 8.6 hours on a single tank, depending on the load.
  • GX130 Fuel-Injected Engine - Smart electronic fuel injection technology increases fuel efficiency, eliminates the engine choke, and reduces fuel associated carburetor problems.
SaleBestseller No. 7
Generac 7127 IQ3500 3,500-Watt Gas-Powered Portable Generator, 50-State/CARB Compliant
  • ULTRA-QUIET – 40% Quieter than Honda* Advanced inverter technology and enclosure design provide optimal quiet performance (* Over 5 dB(A) quieter than the EU3000is, based on independent third-party testing)
  • Ideal for work or play - durable steel enclosure, clean inverter power and easy portability make this the ideal generator for jobsites or recreational activities
  • 16% more power than Honda, Featuring power rush advanced technology.Rated AC Frequency:60 Hz
  • Digital smart lcd - digital wattage meter, run time remaining display, generator status, hour meter and fuel level
  • USB ports - charge mobile devices including smartphones and tablets
Bestseller No. 8
WEN 56235i Super Quiet 2350-Watt Portable Inverter Generator with Fuel Shut Off, CARB Compliant, Ultra Lightweight, Black
  • Ultralight body weighs in at a mere 39 pounds for easy transport and storage .Designed to mirror a pure sine wave, this generator limits total harmonic distortion to under 0.3 percent at no load and under 1.2 percent at full load, making it safe to run laptops, cellphones, monitors, tablets and other sensitive electronics.Includes two three-prong 120V receptacles, one 12V DC receptacle, two 5V USB ports, and a two-year warrantyMaximize fuel economy by engaging the eco-mode switch. This allows the generator's engine to automatically adjust its fuel consumption as items are plugged into and unplugged from the panel, preventing the unnecessary usage of gasoline.
  • Extremely quiet operation comparable to the sound of a normal conversation according to the US Department of Health and Human Services
  • Produces 2350 surge watts and 1900 rated watts of clean power for safe charging of sensitive electronics (phones, tablets, televisions, computers, etc.)
  • Our 79cc 4-stroke OHV engine operates at an extremely quiet 51 decibels at quarter load, quieter than a window air conditioner or the average conversation.
  • Fuel shutoff maximizes the generator’s lifespan by using up the remaining fuel in the carburetor before shutting down
SaleBestseller No. 9
Champion Power Equipment 100891 9375/7500-Watt Dual Fuel Portable Generator, Electric Start
  • DUAL FUEL: Operate your 7500-watt portable generator right out of the box on either gasoline or propane, plus the unit holds 1.2-quarts of oil (included) and has a low oil shut-off sensor
  • ELECTRIC START: Power up the 439cc Champion engine with the handy rocker switch, battery included
  • INTELLIGAUGE: Keep track of voltage, hertz and run-time hours to easily monitor power output and track maintenance intervals
  • POWERFUL: At 9375 starting watts and 7500 running watts on gasoline and 8400 starting watts and 6750 running watts on propane, trust Volt Guard built-in surge protector to prevent overloads
  • CHAMPION SUPPORT: Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts
SaleBestseller No. 10
WEN DF475T Dual Fuel 120V/240V Portable Generator with Electric Start Transfer Switch Ready, 4750-Watt, CARB Compliant
  • Switch between gasoline (4750 surge watts, 3800 running watt) and propane (4350 surge, 3500 running) with the simple turn of the selection dial
  • Voltage easily goes from 120V to 240V, perfect for transfer switches and emergency backup
  • Electric start powers the 224cc 4-stroke OHV engine with the turn of a key
  • 4-gallon tank provides up to 11 hours of half load run time
  • Includes two 120V GFCI outlets (5-20R), a 120V/240V NEMA 30A twist lock (L14-30R), a 12V DC cigarette-lighter-style plug, a bottle of oil, a wheel and handle kit, a 47-inch LPG connection hose, and a 2-year warranty
Bestseller No. 11
Bi‑Directional Converter, Bi‑Direction Converter Module, DC 9‑30V NMEA2000 and NMEA0183 KC‑2W Universal IPX67 Waterproof
  • Supported PGNs: 126992 , 127237, 127245, 127488, 127250 , 127251 , 127258 , 127489, 128259 , 128267 , 128275 , 129025 , 129026 , 129029 , 129033 , 129038, 129039, 129040, 129044 , 129283 , 129284 , 129291 , 129539 , 129540 ,129793 , 129794 , 129798 , 129809 , 129810, 130306 , 130310 , 130311 , 130312 , 130578
  • Excellent Function: Bi‑Directional Converter can take power from the N2K network, no external power supply is needed.Firmware upgrade and NMEA0183 output baudrate configuration by supplied PC software. Overvoltage, power supply transient and accidental reverse polarity protection
  • High Efficient Transformation : This KC‑2W bi‑directional has fuel flow sensor, auto detect NMEA0183 baudrate and supported sentences,converts NMEA 0183 sentences to N2K PGNs, converts N2K PGNs to NMEA 0183 sentences
  • Durable ABS Material: The NMEA0183 bi‑directional converter is made of high quality ABS material,which has high reliability, not easy to break or crack, durable in use.
  • Easy Installation: Plug and play, easy to install, convenient to use, overvoltage protection, fast and efficient,which can save your time and effort.
SaleBestseller No. 12
Hybrid, Electric and Fuel-Cell Vehicles (MindTap Course List)
  • Erjavec, Jack (Author)
  • English (Publication Language)
  • 320 Pages - 10/05/2022 (Publication Date) - Cengage Learning (Publisher)
Bestseller No. 13
EF ECOFLOW Delta Pro 9KWh/3600W Home Backup Power with 4L Unleaded Gasoline & LPG Smart Dual Fuel Generator, Portable Power Station with Handle&Wheels for Outdoors RV High-Power Appliances Emergency
  • [Adapter Bonus] The bundle comes with a DELTA Pro to Smart Generator Adapter, no additional purchase required. Due to shipping restrictions on oversized items, they will be shipped separately. If you mind not being able to receive at the same time, please purchase separately.
  • [Two fuel sources] With either LPG (Propane) or gas, you’ve got two energy sources to deliver higher efficiency, easier use, and fewer emissions.
  • [Unparalleled 3600W Output] A home backup power station for your appliances during a blackout. DELTA Pro ower up 4500W devices with X-Boost. Enough for heaters or window AC units.
  • [5 Ways to Charge DELTA Pro] - Pick from EV station charging, solar, wall outlets, using the Smart Outdoor Generator or via a car outlet. Combine methods to reach 6500W (with an extra battery). Faster than any other solar generator.
  • [Long Lasting LFP Battery] This battery power station sports an LFP battery. Get 6500+ full cycles to last for years. Ideal for outdoor camping & travel.
SaleBestseller No. 14
Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered, CARB Compliant
  • 9500 Running Watts and 12500 Peak Watts (Gasoline); 8500 Running Watts, 11200 Peak Watts (Propane); Remote Start With Included Key Fob, Electric and Recoil Start; Up to 12 Hours of Run Time on a 6. 6 Gallon Fuel Tank With Fuel Gauge
  • Features Two GFCI 120V 5–20R Standard Household Receptacle, One Transfer Switch Ready 120V L14-30R, and One RV Ready 120/240V 14–50R; All Outlets Have Rubber Covers for Added Safety
  • Powered by a Heavy Duty 457cc Westinghouse 4-Stroke OHV Engine Featuring a Long-Lasting Cast Iron Sleeve With Automatic Low Oil Shutdown and Digital Hour Meter. VFT display gives you real time updates with the voltage output, frequency, and lifetime hours
  • Plug-and-Play: Comes With a Remote Start Key Fob, 12V Battery Charger, Oil, an Oil Funnel, a Tool Kit, and a User’s Manual to Get You Started Right Out of the Box (Minimal Assembly Required)
  • All Westinghouse Portable Generators are Functionally Tested in the Factory and May Contain Minimum Residual Oil and/or Fuel Odor; EPA and CARB Compliant; Backed by 3-Year Limited Service, Labor, and Parts Coverage with Nationwide Customer Service Network
SaleBestseller No. 15
DuroMax XP12000EH Generator-12000 Watt Gas or Propane Powered Home Back Up & RV Ready, 50 State Approved Dual Fuel Electric Start Portable Generator, Black and Blue
  • Powerful DuroMax Engine: the XP12000EH is powered by a DuroMax, 457cc OHV engine..With Gasoline : Peak Wattage - 12,000., Running Wattage - 9,500., Running Amperage at 120V - 79.17., Running Amperage at 240V - 39.58., Runtime at 25% Load - 19., Runtime at 50% Load - 8With Propane : Peak Wattage - 11,400., Running Wattage - 9,025., Running Amperage at 120V - 75.21., Running Amperage at 240V - 37.6., Runtime at 25% Load - 14., Runtime at 50% Load - 7Please read the detailed safety instructions in the manual before operating.
  • Dual fuel technology: the ability to run on propane or gasoline allows the freedom and flexibility of fuel choice. Protects your investment by automatically shutting the generator off when it senses that the oil is low
  • Plenty of power: with 12,000 starting watts and 9, 500 running watts, This unit can handle heavy loads from lights and a refrigerator to a home air conditioner and high amperage power tools.
  • Maximum power: with DuroMax MX2 technology, get the maximum power from each of the 120 volt receptacle. Choose between operating the generator at both 120 V and 240 V Simultaneously, or at 120 only with full power.
  • Powering everyone anywhere: like all DuroMax generators, the XP12000EH is EPA and CARB approved For use in all 50 States.

Last update on 2022-12-06 / Affiliate links / Images from Amazon Product Advertising API

How to find the best fuel efficient generator?

Here, we’ll be going over a number of factors that you can use to ensure that you’re purchasing the best fuel efficient generator for you.

Regardless of which type of item you’re looking to buy, chances are that there are existing buying guides on the internet, all of which aim to give you good fuel efficient generator recommendations.

Despite these recommendations, however, it’s always a good idea to do your own research. In addition to this research, asking yourself the following questions is also super helpful:

  • What features does the fuel efficient generator need to have to be perfect for my needs?
  • What is my budget?
  • Do I need to purchase a certain brand?

Once you’ve answered these questions and have a good idea of what you’re looking for and the buying process becomes much easier. Keep in mind that when looking for the best product, there’s no need to rush. In fact, very rarely are the ideal products found by choosing the first one you see or by basing your decisions on only one factor. Take your time and enjoy the process!

Now, with the answers to the previous questions in mind, we urge you to use our upcoming buying guide for fuel efficient generator to find what you’re looking for:

Brand

In some cases, the brand of fuel efficient generator is very important. For example, if you’re looking for an item that works in tandem with another, you might very well need both products to be the same brand. If this is the case, it’s vital to pay attention to this factor, as choosing the wrong product can mean the difference between wasting your money and buying a great product that functions as it should.

Features

The features in any given fuel efficient generator are important because they can dictate which version of an item you need and how much money you need to spend. Consider all the key features that you want your item to have and don’t settle for anything that doesn’t check at least ¾ of your boxes.

Reviews

Customer reviews about fuel efficient generator are crucial – especially when you’re buying a product that costs a lot of money or serves a big importance. Luckily, most products can be found online, which means that it’s common for there to be scores of customer reviews from those who have already purchased any given product.

Pay attention to these reviews. Take note of the pros and cons that they mention, and factor these into your big decision. In some cases, you’ll be forced to sacrifice one con in order to gain a particular pro, but being aware of the potential con is going to be beneficial in either case.

Quality

Of course, quality is key. You don’t want to purchase a low-quality product. If you do, you run the risk of your item breaking, not working properly, or otherwise proving to be very disappointing, as well as a waste of money.

You can compare fuel efficient generator quality by researching what your potential purchases are made from, contrasting the individual items against each other to discern which one is made of the best materials.

Warranty

Warranty isn’t always going to be important, but it definitely can be. This is especially true if the item in question is tech-related or expensive. A good warranty will be valid for an extended time after purchase and cover a variety of problems ranging from item defects to random accidents, water damage, and other miscellaneous events that could ruin your product.

Conclusion

The quest to find the best fuel efficient generator can be daunting – but it doesn’t have to be. It can be made much easier by asking yourself a few simple questions and then thinking critically about the items you want to buy. Consider their features, quality, brand, warranty, and customer reviews and you’re more likely to make a great purchase.