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DuroMax Backup Generators

DuroMax Power Equipment is headquartered in Ontario, California, specializing in dual-fuel and tri-fuel powerhouses. Their heavy-duty cast-iron sleeve engines deliver robust surge capacity to start central air conditioners during grid outages.

Engineering Headquarters Ontario, California, USA

Factory Warranty Coverage 5-Year Limited Warranty

Lab Tested Fleet 6 Validated Models

Warranty Triage & Technical Support

Official DuroMax Factory Service & Local Contractors

Need authorized warranty repairs or factory parts? Contact official factory support directly or find a certified local generator installer.

Call: 1-844-387-6629 Factory Portal Find Certified Installer

Tested DuroMax Generators (6)

Showing all lab-tested DuroMax models

Tri-Fuel Score 8.5/10

Enclosed Inverter 1.9% THD

DuroMax : 459cc 4-Stroke OHV 100% Copper Winding : Bonded Neutral

DuroMax XP11000iHT 11,000W Peak / 9,000W Running Enclosed Tri-Fuel Inverter

Best For: Quiet 61 dBA enclosed tri-fuel home backup with 100% copper windings and remote start.

Running / Surge 9,000W / 11,000W

Noise @ 23ft 61 dBA (Quiet)

Fuel & Runtime Gas/LPG/NG (17h)

Backup Outlet NEMA 14-50R

Power Purity <1.9% THD (Bonded)

Weight & Mobility 239 lbs (Wheel Kit)

Lowest Verified Price

$2,499.00

$0.28 / Running Watt

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Dual-Fuel Score 8.6/10

Open-Frame Inverter 4.9% THD

DuroMax : 457cc DuroMax 4-Stroke OHV Engine : Bonded Neutral

DuroMax XP12000EH 12,000W Peak / 9,500W Running Dual-Fuel Home Backup Generator

Best For: Whole-home backup resilience and jobsite power requiring dependable Bonded Neutral operation and clean electrical sine waves.

Running / Surge 9,500W / 12,000W

Noise @ 23ft 72 dBA (Open-Frame)

Fuel & Runtime Gas EFI (16h)

Backup Outlet NEMA 14-50R

Power Purity <4.9% THD (Bonded)

Weight & Mobility 224 lbs (Wheel Kit)

Lowest Verified Price

$1,099.00

$0.12 / Running Watt

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Tri-Fuel Score 8.6/10

Open-Frame Inverter 2.9% THD

DuroMax : 500cc 4-Stroke OHV Copper-Wound Alternator : Bonded Neutral

DuroMax XP13000HXT 13,000W Peak / 10,500W Running 500cc Tri-Fuel Home Backup Generator

Best For: High-surge 50-amp whole-house backup where raw 500cc natural gas torque matters most.

Running / Surge 10,500W / 13,000W

Noise @ 23ft 72 dBA (Open-Frame)

Fuel & Runtime Gas/LPG/NG (17h)

Backup Outlet NEMA 14-50R

Power Purity <2.9% THD (Bonded)

Weight & Mobility 240 lbs (Wheel Kit)

Lowest Verified Price

$1,599.00

$0.15 / Running Watt

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Dual-Fuel Score 8.8/10

Open-Frame Inverter 4.6% THD

DuroMax : 713cc V-Twin DuroMax 4-Stroke OHV Engine : Bonded Neutral

DuroMax XP15000EH 15,000W Peak / 12,000W Running V-Twin Dual-Fuel Generator

Best For: Whole-home backup resilience and jobsite power requiring dependable Bonded Neutral operation and clean electrical sine waves.

Running / Surge 12,000W / 15,000W

Noise @ 23ft 74 dBA (Open-Frame)

Fuel & Runtime Gas EFI (14.5h)

Backup Outlet NEMA 14-50R

Power Purity <4.6% THD (Bonded)

Weight & Mobility 330 lbs (Wheel Kit)

Lowest Verified Price

$2,499.00

$0.21 / Running Watt

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Tri-Fuel Score 8.9/10

Enclosed Inverter 1.8% THD

DuroMax : 760cc 4-Stroke OHV Copper-Wound Alternator : Bonded Neutral

DuroMax XP16000iHT 16,000W Peak / 13,000W Running V-Twin Enclosed Tri-Fuel Inverter

Best For: Large luxury homes needing full 50-amp (10,800W+) natural gas inverter capacity.

Running / Surge 13,000W / 16,000W

Noise @ 23ft 64 dBA (Quiet)

Fuel & Runtime Gas/LPG/NG (16.5h)

Backup Outlet NEMA 14-50R

Power Purity <1.8% THD (Bonded)

Weight & Mobility 365 lbs (Wheel Kit)

Lowest Verified Price

$4,499.00

$0.35 / Running Watt

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Dual-Fuel Score 8.5/10

Enclosed Inverter 2% THD

DuroMax : 459cc 4-Stroke OHV Copper-Wound Alternator : Bonded Neutral

DuroMax XP9000iH 9,000W Peak / 7,600W Running Enclosed Dual-Fuel Inverter

Best For: Quiet 62 dBA enclosed dual-fuel backup for 50-amp RVs and 3-ton central A/C homes.

Running / Surge 7,600W / 9,000W

Noise @ 23ft 62 dBA (Quiet)

Fuel & Runtime Gas EFI (18h)

Backup Outlet NEMA 14-50R

Power Purity <2% THD (Bonded)

Weight & Mobility 229 lbs (Wheel Kit)

Lowest Verified Price

$1,999.00

$0.26 / Running Watt

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