10 Best Best 15000 Watt Generator of 2025

Tested and Reviewed: Top 10 Best 15000 Watt Generator deals with expert ratings from 8.1 to a perfect 10

July 2025 Edition

Editor's Choice

9.7

DuroMax

DuroMax XP15000EH Dual Fuel Portable Generator-15000 Watt Gas or Propane Powered Electric Start-Home Back Up & RV Ready, 50 State Approved, Blue and Black

Editor's bottom line:

“This best 15000 watt generator is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

With 15,000 watts of power, the XP15000EH Dual Fuel generator will keep your entire 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 XP15000EH comes equipped with a digital multimeter that shows voltage, frequency, and hours run, 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. DuroMax generators will power you whether youre at home, on an RV trip, or at the jobsite

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Picked by 330 people today

9.5

WEN

WEN 14,500-Watt 120V/240V Tri-Fuel Generator for Gas, Propane, and Natural Gas, Transfer-Switch Ready with Electric Start and Wheel Kit (TF1450)

Free Shipping

Main Highlights

Switch between gasoline (14500 surge watts, 11500 running watts), propane (12500 surge watts, 10300 running watts), and natural gas (10500 surge watts, 8750 running watts) with a simple turn of the selection dial
Operates at 120V and 240V, making it perfect for transfer switches and emergency backup
Electric start powers the 500c 4-stroke OHV engine with the turn of a key
8.2-gallon tank provides up to 12 hours of half-load runtime
Includes four 120V 5-20R outlet, a 120V/240V transfer-switch-ready NEMA L14-30R outlet, a 120V/240V transfer-switch-ready NEMA 14-50R outlet, a 12V DC automotive outlet, a bottle of oil, a 6-foot LPG connection hose, an NG quick-connect adapter, and a three-year limited warranty

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9.5

Westinghouse

Westinghouse 13500 Peak Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered

Free Shipping

Main Highlights

13500 Peak Watts, 10500 Running Watts (Gasoline); 12500 Peak Watts, 9500 Running Watts (Propane); Remote Start With Included Key Fob, Electric and Recoil Start; Up to 19 Hours of Run Time on a 9.5 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 500cc Westinghouse 4-Stroke OHV Engine Featuring a Long-Lasting Cast Iron Sleeve With Automatic Low Oil and Carbon Monoxide (CO) Shutdown, and Digital Hour Meter
Plug-and-Play: Comes With a Remote Start Key Fob, 12V Battery Charger, Oil, and 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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9.2

Save 14%

Westinghouse

Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered

14% OffFree Shipping

Main Highlights

13500 Peak Watts, 10500 Running Watts (Gasoline); 12500 Peak Watts, 9500 Running Watts (Propane); 10000 Peak Watts, 8500 Running Watts (Natural Gas); Remote Start With Included Key Fob, Electric and Recoil Start; Up to 19 Hours of Run Time on a 9.5 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 500cc Westinghouse 4-Stroke OHV Engine Featuring a Long-Lasting Cast Iron Sleeve With Automatic Low Oil and Carbon Monoxide (CO) Shutdown, and Digital Hour Meter
Plug-and-Play: Comes With a Remote Start Key Fob, 12V Battery Charger, Oil, and 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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9.0

Save 15%

LUNTHINK

LUNTHINK Generator Quiet Box,Accommodates The Maximum Size of The Unit:39.4" x 35" x 35.4"

15% Off

Main Highlights

HIGH QUALITY : made of high-strength steel plate, our generator box is specially designed to protect your generator. The internal space: 39.4" x 35" x 35.5 "Suitable for most generators within 15000 wattsThe installation is simple and convenient, and the generator can be easily put into it without complicated operation.
SOUND INSULATION AND DRAINAGE DESIGN the top of generator shell is filled with high-density fire-proof sound-absorbing cotton, which can effectively absorb generator noise. The double-layer structure design of the air inlet and the air outlet forms an air layer in the middle, which effectively blocks the spread of noise, and the water outlet is arranged at the bottom of the air inlet, which can discharge the possible accumulated water out of the outer box in time and protect the reliable operation of the generator.
ADAPT TO VARIOUS WEATHER CONDITIONS Adapt to various weather conditions: multiple vents are evenly distributed on both sides of the outer box, and air ducts are designed inside to form good air convection. The rising temperature in hot weather is effectively contained, and heavy metal can resist the heavy pressure of ice and snow, or can effectively protect the generator during hurricane.
OPERATION WINDOW : there is an operation window on the front of the generator quiet box, which can conveniently start, stop and monitor the generator without opening the outer box, which is convenient and fast. Our generator storage box is equipped with a solid lock, which effectively prevents unauthorized personnel from opening the outer box.
NOTE : Box A and Box B are combined into a box assembly.

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8.8

Westinghouse

Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered

Free Shipping

Main Highlights

Perfect as a backup power source for larger homes or a dependable source of portable power
14,500 peak watts, 11,500 running watts (gasoline); 13,500 peak watts, 10,500 running watts (propane); 12,000 peak watts, 9,500 running watts (natural gas)
Runs for up to 19 hours on a 9.5 gal. fuel tank with built-in fuel gauge; up to 7 hours on a 20 lb. propane tank
Powered by a heavy duty 550cc 4-Stroke OHV Westinghouse Engine constructed with a durable cast iron sleeve
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

8.6

Save 21%

Champion Power Equipment

Champion Power Equipment 15,000-Watt MKE Series Portable Generator with Electric Start and CO Shield

21% OffFree Shipping

Main Highlights

Ultra-powerful: At 15,000 starting watts and 12,000 running watts, enjoy up to 9 hours of run time on a full tank of gasoline with a noise level of 78 dBA from 23 feet
Electric Start: Trust the reliable 717cc Milwaukee Series V-Twin Engine with its battery-included electric start featuring a reliable toggle switch, plus built-in Cold Start Technology for easy starts in cold weather
Covered Outlets: One 120V 30A locking, a 120/240V 30A locking, a 120/240V 50A and four 120V 20A GFCI outlets, plus Volt Guard built-in surge protector prevents overloads and keeps your appliances and equipment safe
Lift Hook: Designed for safe and easy transport, loading and unloading, plus the Intelligauge keeps track of voltage, hertz and run-time hours so you can easily monitor power output and track maintenance intervals
Champion Support: Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts

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8.3

Champion Power Equipment

Champion Power Equipment 15,000-Watt Electric Start Tri Fuel Home Backup Portable Generator with CO Shield

Free Shipping

Main Highlights

Your 12,000-watt portable generator operates on natural gas, propane, or gasoline; plus natural gas and propane hoses are included so the unit is ready to run on any fuel right out of the box
At 15,000 starting watts and 12,000 running watts, enjoy up to 9 hours of run time on a full tank of gasoline with a noise level of 78 dBA from 23 feet
Trust the reliable 717cc Milwaukee Series V-Twin Engine with its battery-included electric start featuring a reliable toggle switch, plus features CO Shield carbon monoxide auto shutoff system
Designed for safe and easy transport, loading and unloading, plus the Intelligauge keeps track of voltage, hertz and run-time hours so you can easily monitor power output and track maintenance intervals
Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts

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8.1

Westinghouse

Westinghouse 18000 Peak Watt Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready 30A & 50 Outlets, Gas Powered

Free Shipping

Main Highlights

14500 Running Watts and 18000 Peak Watts; Electric Start and Remote Start with Included Key Fob; Up to 11 Hours of Run Time on a 10. 5 Gallon Fuel Tank With Fuel Gauge
Features Two GFCI 120V 520R Standard Household Receptacles, One 120V L5-30R Outlet, One Transfer Switch Ready 120V L14-30R, One RV Ready 120/240V 1450R, and Two 5V USB Ports; All Outlets Have Rubber Covers for Added Safety
Powered by the Ultra Duty 713cc OHV V-Twin Westinghouse Engine Featuring a Long-Lasting Cast Iron Sleeve With Automatic Low Oil Shutdown and Digital Hour Meter
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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8.1

Save 7%

Generac

Generac Guardian 22kW Home Standby Generator with 200 Amp Transfer Switch, Durable All Aluminum, WiFi Enabled with G-Force Engine, Easy to Use, Whole House Power Backup, Smart Outage Solution - Bisque

7% Off

Main Highlights

Remote Monitoring Anywhere: With Generac 7043 22kW Mobile Link Wi-Fi connectivity, effortlessly track generator performance from anywhere. Stay updated on status and maintenance alerts, ensuring peace of mind even when youre away
Whole House Protection: Enjoy comprehensive coverage with Generac's 200 Amp NEMA 3R smart switch, designed for outdoor use with an aluminum enclosure. This ensures that your home remains powered and protected during power outages
Long-Term Assurance: Backed by a 5-Year Limited Warranty, this automatic transfer switch delivers lasting performance and peace of mind, ensuring your investment in a Generac transfer switch will serve you well for years
High-Quality 22kW Power: True Power Technology delivers clean, stable 22,000 watts with under 5% harmonic distortion. Generacs low-maintenance engines run quieter and use less fuel for efficient, reliable home power
Crafted for Excellence: Proudly engineered and assembled in the USA, our generators stand as testament to quality and craftsmanship. The purpose-built G-Force Engine is designed to handle the demands of usage, ensuring reliability and reduced maintenance
Easy Installation: Generac recommends your new Home Standby Generator to be installed by a certified and licensed electrician

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Our Best Overall Choice

Best Choice

9.7

DuroMax

DuroMax XP15000EH Dual Fuel Portable Generator-15000 Watt Gas or Propane Powered Electric Start-Home Back Up & RV Ready, 50 State Approved, Blue and Black

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

With 15,000 watts of power, the XP15000EH Dual Fuel generator will keep your entire 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 XP15000EH comes equipped with a digital multimeter that shows voltage, frequency, and hours run, 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. DuroMax generators will power you whether youre at home, on an RV trip, or at the jobsite

Show Price

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