10 Best Portable Diesel Generator of December 2025

• Durable, fully welded 1 1/4" steel frame
• Yanmar LW Series 435cc air-cooled direct injection, industrial-grade diesel engine
• Diesel power requires less maintenance, is more efficient, and provides a long life
• True Power Technology provides less than 5% total harmonic distortion for clean, smooth operation of sensitive electronics, tools and appliances
• True Power Technology provides less than 5% total harmonic distortion for clean, smooth operation of sensitive electronics, tools and appliances

Generac

• POWERFUL DUROSTAR ENGINE: The DS10000EH is powered by a DuroStar 18 HP 440cc OHV engine with automatic low oil shutoff; Fuel Capacity: 8.3 Gallons; Noise Level: 72dB
• PLENTY OF POWER: With 10,000 peak watts and 8,000 running watts, this unit is a workhorse that provides plenty of power to handle multiple jobs from powering high voltage appliances to heavy duty power tools
• MAXIMUM POWER: With DuroStar MX2 technology, get the maximum power from each of the 120V outlets; Choose between operating the generator at both 120V and 240V simultaneously, or at 120V only with full power
• POWERING EVERYONE ANYWHERE: Like all DuroStar generators, the DS10000EH is EPA and CARB approved for use in all 50 states
• DUAL FUEL TECHNOLOGY: This generator runs on gasoline or propane giving you the freedom and flexibility of fuel choice
• WHAT'S IN THE BOX: DuroStar DS10000EH Generator, Oil Funnel, Sparkplug Wrench, Tool Set, Wheel & Handle Kit, DC Charging Cables and Owner's Manual
• POWER PANEL: Includes a selection of outlets for maximum compatibility in your applications including: 2 120V household outlets, 1 120V 30A twist lock outlet, 1 120/240V 30A twist lock outlet and 1 120/240V 50A heavy duty outlet; Also includes a voltmeter and 12V DC charging posts for charging external batteries

DuroStar

• Dimensions: 18" x 11" x 18" | Weight: 50 lbs
• Noise Level: 53 dB operation
• EPA III and CARB Compliant 79.7 cc 4-stroke OHV engine produces 2000 surge watts and 1600 rated watts
• Great for campgrounds, construction sites, tailgates and power outages
• Produces clean power to safely operate and prevent damage to sensitive electronics such as phones, tablets, televisions and computers
• Includes two three-prong 120V receptacles, one 12V DC receptacle and one 5V USB port

WEN

• 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
• Electric Start: Power up the 224cc Champion engine with the handy toggle switch, battery included
• 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

Champion Power Equipment

• Your purchase includes One DuroMax XP4850EH 4850 watt Dual Fuel Hybrid generator with Electric Start, One oil funnel, One spark plug wrench, tools set, wheels and handle kit, DC charging cables and owner’s manual
• Portable Generator dimensions: 24” L x 17" W x 17" H. Product weight: 127 lbs
• Specifications: Noise level – 69 dB. Fuel tank capacity (GASOLINE) – 3.96 gallons. Suggested tank size (PROPANE) – 20 gallons
• The ability to run on Propane or Gasoline allows the Freedom and Flexibility of Fuel Choice
• With 4,850 starting watts and 3,850 running watts, this unit can handle heavy loads from lights and a refrigerator to a home air conditioner and high amperage power tools. Operate at both 120 V and 240 V simultaneously, or at 120 only with full power

DuroMax

• Produces 2000 starting watts with 1600 running watts of clean and safe power for sensitive electronics, such as phones, televisions, laptops, and other electronics
• Quiet operation at only 58 decibels
• Light weight at only 46 pounds, providing compact and easy portability
• Complete with A-iPower’s “Low idle” technology for an extended run time
• Perfect for camping, tailgating, and travel

A-iPower

• Dual Fuel – Operate your 3400-watt portable generator right out of the box on either gasoline or propane, plus the unit holds 0.6-quarts of oil (recommended 10W-30) and has a low oil shut-off sensor
• Ultra-Quiet Operation – 59 dBA is perfect for RVs, tailgating, your next project or backup power for your home, featuring 3400 starting watts and 3100 running watts with up to 7.5 hours run time on gasoline
• Clean Power for Sensitive Electronics – RV Ready with a 120V 30A RV, plus two 120V 20A household outlets with clean electricity (less than 3% THD) and 12V DC outlet with dual USB adapter
• Champion Support – Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts
• Convenient Electric Start with 3-Position Ignition Switch – Battery included, plus Quick Touch Panel allows you to access all your controls in one spot.Noise Level :59 dBA at 23 feet. Frequency 60 Hz

Champion Power Equipment

• 1800 Rated Watts and 2200 Peak Watts; Gasoline Powered; Up to 13 Hours of Run Time; Gasoline Powered; 1.3 Gallon Fuel Tank
• Rainier 79cc OHV 4 Stroke Engine with Easy Access Recoil Start; Features “Eco (Economy) Mode” for Conserving Energy and Maximum Fuel Efficiency
• Super Quiet Operation; Enjoy a Hushed Hum of as Low as 52 dBA While Providing A Stable Power Source for All Your Sensitive Electronics Such as Smartphones, Tablets, Televisions, and Computers (noise rating obtained at a distance of 7 meters in a controlled environment)
• Control Panel Includes Low Oil Alarm, Overload Alarm, and Output Indicator; Two 5-20R 120V 20 AMP Household Outlets; One 12V 15 AMP DC Outlet; One Neutral Floating Grounding Port; Stop and Reset Buttons
• Equipped with Built-In Handle at a Lightweight 44 Lbs.; Ultra Compact and Portable to Make Transporting Your New Generator Effortless Wherever You Go
• EPA and CARB Compliant; Versatile Choice for Home Use or Recreation Use Such as Power Outages, Camping, Outdoor Activities, Emergency Backup Power. RV air conditioner (11,000 BTU)
• Backed By a 3-Year Limited Warranty

Rainier Outdoor Power Equipment

• Features Two GFCI (Ground Fault Circuit Interrupter) 5-20R 120V Household Duplex Receptacle and One L14-30R 120/240V Twist-Lock Receptacle; All Outlets Have Rubber Covers for Added Safety
• 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)
• Powered by a 420cc Westinghouse 4-Stroke OHV Engine Featuring a Long-Lasting Cast Iron Sleeve with Automatic Low Oil Shutdown and Digital Hour Meter. Noise Level-72 dBA
• 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
• 7500 Running Watts and 9500 Peak Watts; Remote Start With Included Key Fob, Electric and Recoil Start; Up to 11 Hours of Run Time on a 6.6 Gallon Fuel Tank With Fuel Gauge

Westinghouse

• Green-Power America GPG10000EW Pro Series Recoil Electric Start Generator - 10,000-Watt is designed for home, emergency, and recreational use. It offers 10,000-Starting Watts and 7,500-Running Watts. It includes a 6.6G gasoline tank.
• Runs for up to 9 hours at 50% load on full 6.6-Gal. Fuel tank
• Features 10, 000-starting watts and 7, 500-running watts
• Includes (4) 120-volt AC outlets, (1) 120-volt twist lock AC outlet, (1) 120/240-v twist lock AC outlet, and (1) 12-Volt/ 8.3A DC outlet
• Manual recoil/electric start, lct 420cc/ 15Hp OHV engine

Green-Power America