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Cummins Backup Generators

Cummins Onan builds heavy-duty recreational and residential power systems. Engineered for durability, their quiet inverter generators deliver exceptional fuel efficiency, low sound profiles, and reliable 120V/240V power delivery.

Engineering Headquarters Columbus, Indiana, USA

Factory Warranty Coverage 3-Year Limited Warranty

Lab Tested Fleet 3 Validated Models

Warranty Triage & Technical Support

Official Cummins Factory Service & Local Contractors

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

Call: 1-800-286-6467 Factory Portal Find Certified Installer

Tested Cummins Generators (3)

Showing all lab-tested Cummins models

Dual-Fuel Score 8.8/10

Enclosed Inverter 1.7% THD

Cummins : 98cc 4-Stroke OHV Engine : Floating Neutral

Cummins Onan P2500i 2,500W Peak / 2,200W Running Digital Inverter Generator

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

Running / Surge 2,200W / 2,500W

Noise @ 23ft 52 dBA (Quiet)

Fuel & Runtime Gas EFI (10h)

Backup Outlet NEMA 5-20R GFCI

Power Purity <1.7% THD (Floating)

Weight & Mobility 48 lbs (Wheel Kit)

Lowest Verified Price

$699.00

$0.32 / Running Watt

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Dual-Fuel Score 8.7/10

Enclosed Inverter 1.6% THD

Cummins : 224cc 4-Stroke OHV Copper-Wound Alternator : Floating Neutral

Cummins Onan P4500i 4,500W Peak / 3,700W Running Ultra-Quiet Enclosed RV Inverter

Best For: Whisper-quiet 52 dBA RV camping and emergency 120V refrigerator and furnace power.

Running / Surge 3,700W / 4,500W

Noise @ 23ft 52 dBA (Quiet)

Fuel & Runtime Gas EFI (18h)

Backup Outlet NEMA L14-30R

Power Purity <1.6% THD (Floating)

Weight & Mobility 98 lbs (Wheel Kit)

Lowest Verified Price

$1,099.00

$0.30 / Running Watt

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Dual-Fuel Score 8.4/10

Open-Frame Inverter 2.7% THD

Cummins : 420cc 4-Stroke OHV Copper-Wound Alternator : Bonded Neutral

Cummins Onan P9500df 9,500W Peak / 7,500W Running Dual-Fuel Home Backup Generator

Best For: Cummins Onan loyalists wanting 9,500W dual-fuel 240V home and 50-amp RV backup.

Running / Surge 7,500W / 9,500W

Noise @ 23ft 70 dBA (Open-Frame)

Fuel & Runtime Gas EFI (16h)

Backup Outlet NEMA 14-50R

Power Purity <2.7% THD (Bonded)

Weight & Mobility 206 lbs (Wheel Kit)

Lowest Verified Price

$1,299.00

$0.17 / Running Watt

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