10 Best Firman Dual Fuel Generator of 2025

Tested and Reviewed: Top 10 Firman Dual Fuel Generator deals with expert ratings from 8.1 to a perfect 10

July 2025 Edition

Editor's Choice

9.7

Champion Power Equipment

Champion Power Equipment 4750-Watt Dual Fuel Portable Generator with Electric Start, Wheel Kit

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Editor's bottom line:

“This firman dual fuel generator is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

DUAL FUEL: Operate your 3800-watt portable generator right out of the box on either gasoline or propane, plus the unit holds 0.6-quarts of oil (included) and has a low oil shut-off sensor.Wheels : No. Engine Speed : 3600
ELECTRIC START: Power up the 224cc Champion engine with the handy toggle switch
INTELLIGAUGE: Keep track of voltage, hertz and run-time hours to easily monitor power output and track maintenance intervals
OUTLETS: One 120V 30A RV outlet (TT-30R), one 120V 30A locking outlet (L5-30R) and two 120V 20A household outlets (5-20R) - 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
Wheel Diameter:8in.

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Picked by 339 people today

9.5

Save 23%

Champion Power Equipment

Champion Power Equipment 4500-Watt Electric Start Dual Fuel RV Ready Portable Inverter Generator with Quiet Technology and CO Shield

23% OffFree Shipping

Main Highlights

Dual Fuel: Operate your 4500-watt portable generator right out of the box on either gasoline or propane, plus features CO Shield carbon monoxide auto shutoff system
Quiet Technology and Extended Run Time: 61 dBA is great for RVs, tailgating, or camping with 4500 starting watts, 3500 running watts and up to 14 hours run time on gasoline, and 3150 running watts and up to 21 hours on propane
Parallel Ready: The optional parallel kit (sold separately) enables this inverter to connect with another Champion inverter to increase your power output
Intelligauge with Power Meter: Monitor voltage, frequency and operating hours with ease, plus the EZ Start Dial simplifies startup
Champion Support: Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts

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9.5

Save 20%

Westinghouse

Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered

20% OffFree Shipping

Main Highlights

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 520R Standard Household Receptacle, One Transfer Switch Ready 120V L14-30R, and One RV Ready 120/240V 1450R; 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 Users 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 Compliant; Backed By 3-Year Limited Service, Labor, and Parts Coverage and Nationwide Customer Service Network

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Best Value

9.2

Save 27%

DuroMax

DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator - Gas & Propane, Electric Start, Whole Home Backup Power, Transfer Switch Ready, RV & Emergency Ready

27% OffFree Shipping

Main Highlights

With 13,000 watts of power, the XP13000EH Dual Fuel generator will keep your whole home running during a storm or power outage
DuroMax is the industry leader in Dual Fuel portable generator technology, with a full assortment ranging from digital inverters to generators that can power your entire home
At the core of all our products resides a robust DuroMax engine. Designed for Power. Designed to Last
The XP13000EH comes with a push button start, a front facing interface that allows you to change your fuel type in seconds, and a wide variety of outlets (including a transfer switch-ready 50 amp outlet)
Constructed with a heavy-duty all metal frame and power panel - No plastic parts
Built to withstand severe weather and years of heavy wear-and-tear
Power wherever and whenever you need it - No-flat tires roll easily over any terrain
100% Copper Windings - Unlike aluminum, copper is a superior heat conductor that extends the life of your generator
Stay powered with our EH line of portable generators
DuroMax portable generators are designed to be mobile and versatile, with the ability to provide power whenever and wherever you need it. Unlike traditional standby generators that are large, expensive, yet only serve one purpose, DuroMax generators will power you whether youre at home, on an RV trip, or at the jobsite

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9.0

Save 8%

WEN

WEN Quiet and Lightweight 3600-Watt Dual Fuel RV-Ready Portable Inverter Generator with Fuel Shut Off and CO Watchdog (DF360iX)

8% OffFree Shipping

Main Highlights

Dual-fuel design runs on both gasoline (3600 surge watts, 2900 rated watts) and propane (3500 surge watts, 2600 rated watts)
Extremely quiet operation comparable to the sound of a normal conversation according to the US Department of Health and Human Services
Produces clean power to prevent damage to sensitive electronics such as smartphones, tablets and laptops
The WEN Watchdog CO Shutdown Sensor helps protect both you and your family by automatically turning off the generator if dangerous levels of carbon monoxide are detected
Includes fuel shut-off to help limit maintenance, two three-prong 120V receptacles, one TT-30R RV receptacle, one 12V DC receptacle, two 5V USB ports, a tool-free LPG quick-connector, and a three-year warranty

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8.8

Save 23%

Champion Power Equipment

Champion Power Equipment 4250-Watt Dual Fuel RV Ready Portable Open Frame Inverter Generator with Quiet Technology

23% Off

Main Highlights

ADVANCED DIGITAL HYBRID DESIGN: 50% quieter and 20% lighter than a traditional Champion 3500-watt generator, plus our Economy Mode feature saves fuel and extends engine life
DUAL FUEL: This RV Ready inverter operates on gasoline or propane and has a 120V 30A RV, plus two 120V 20A household outlets and 12V DC outlet with dual USB adapter
QUIET TECHNOLOGY: 64 dBA is great for RVs, tailgating, your next project or home backup, with 4250 starting watts and 3500 running watts for up to 22 hours run time on gasoline. Covered Circuit Breakers : Yes
PARALLEL READY: If you purchase the optional ParaLINK Parallel Kit, you can increase your power output by connecting up to two 3000-watt or higher inverter generators
CHAMPION SUPPORT: Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts

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8.6

Save 17%

Champion Power Equipment

Champion Power Equipment 4000-Watt Dual Fuel RV Ready Portable Inverter Generator with Quiet Technology and CO Shield

17% OffFree Shipping

Main Highlights

Operate your 4000-watt portable generator right out of the box on either gasoline or propane, plus features CO Shield carbon monoxide auto shutoff system
With an ultra-quiet 64 dBA from 23 feet, enjoy 4000 starting watts, 3000 running watts and up to 10 hours run time on gasoline, and 2700 running watts and up to 25 hours on propane
The optional, sold-separately parallel kit enables this inverter to connect with another Parallel Ready Champion Inverter or Power Station for more power and longer run time
Includes a 120V 25A TT-30R outlet, a 120V 20 A household duplex outlet (5-20R) with clean electricity (less than 3% THD), plus a 12V automotive-style outlet, and Parallel outlets
Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts

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8.3

Firman

FIRMAN Inverter Portable Generator, 171cc Engine with Electric Start, 3300W Power Generator with Run Time of 9 hours, Whisper Series Generator, 109lbs

Main Highlights

Portable Inverter Generator: FIRMAN presents an innovative Inverter Generator that is reliable, quiet, and parallel-ready to power up the house in no time. The portable generator can efficiently run up to 9 hours with a fuel tank capacity of 1.8 gallons
Inverter Generator with Powerful Engine: Our home generator features a 171cc engine with automatic low oil shutdown protection and a cast iron sleeve that ensures higher performance, longer life, lower maintenance, and extreme durability
Whisper Series Generator: The Whisper Series muffler keeps the FIRMAN portable generator running at a quiet 59 decibels, making this generator among some of the quietest generators available in the market
Lightweight and Portable Generator: With its compact and durable construction, the generator is suitable for camping trips, tailgating, and other recreational use of power supplies. The generator weighs 109 lbs and is easy to take anywhere you want
Additional Tools: Get a 3-year warranty and various accessories, including an oil bottle, oil funnel, spark plug wrench, screwdriver, 12V battery cable, floater charger, and quick oil drain with our portable generator for utmost utility and convenience

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8.1

Firman

Firman WH03041 Dual Fuel Inverter 3300/3000W Recoil Start Gasoline or Propane Powered Parallel Ready Portable Generator

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Main Highlights

Package Dimensions: 22.8 L x 30 H x 22 W (inches)
Package Weight : 110 pounds
Country of Origin : China
Fit type: Universal Fit

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8.1

Save 12%

Firman

FIRMAN W03383 Remote Start Gas Generator - 3650/3300W,Black

12% OffFree Shipping

Main Highlights

Quiet and fuel-efficient, provides clean power for electronics and sensitive equipment
Best used for camping and tailgating
Delivers true 30A power
Multi feature control panel with covered outlets
Includes engine oil, funnel and FIRMAN assembly tool kit

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Our Best Overall Choice

Best Choice

9.7

Champion Power Equipment

Champion Power Equipment 4750-Watt Dual Fuel Portable Generator with Electric Start, Wheel Kit

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

DUAL FUEL: Operate your 3800-watt portable generator right out of the box on either gasoline or propane, plus the unit holds 0.6-quarts of oil (included) and has a low oil shut-off sensor.Wheels : No. Engine Speed : 3600
ELECTRIC START: Power up the 224cc Champion engine with the handy toggle switch
INTELLIGAUGE: Keep track of voltage, hertz and run-time hours to easily monitor power output and track maintenance intervals
OUTLETS: One 120V 30A RV outlet (TT-30R), one 120V 30A locking outlet (L5-30R) and two 120V 20A household outlets (5-20R) - 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
Wheel Diameter:8in.

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