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Generac Backup Generators

Generac Power Systems is an industry pioneer in home standby and portable generators. Their residential units offer electric start, OHVI industrial engines, and direct compatibility with automatic and manual transfer switches.

Engineering Headquarters Waukesha, Wisconsin, USA

Factory Warranty Coverage 3-Year Limited Warranty

Lab Tested Fleet 5 Validated Models

Warranty Triage & Technical Support

Official Generac Factory Service & Local Contractors

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

Call: 1-888-436-3722 Factory Portal Find Certified Installer

Tested Generac Generators (5)

Showing all lab-tested Generac models

Dual-Fuel Score 8.5/10

Open-Frame Inverter 4.8% THD

Generac : 389cc Generac OHV Engine : Bonded Neutral

Generac GP6500 8,125W Peak / 6,500W Running Gas Generator with COsense

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

Running / Surge 6,500W / 8,125W

Noise @ 23ft 71 dBA (Open-Frame)

Fuel & Runtime Gas EFI (16h)

Backup Outlet NEMA L14-30R

Power Purity <4.8% THD (Bonded)

Weight & Mobility 177 lbs (Wheel Kit)

Lowest Verified Price

$899.00

$0.14 / Running Watt

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Dual-Fuel Score 8.6/10

Open-Frame Inverter 4.7% THD

Generac : 420cc Generac OHV Commercial Engine : Bonded Neutral

Generac GP8000E 10,000W Peak / 8,000W Running Electric Start Generator with COsense

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

Running / Surge 8,000W / 10,000W

Noise @ 23ft 72 dBA (Open-Frame)

Fuel & Runtime Gas EFI (14.5h)

Backup Outlet NEMA L14-30R

Power Purity <4.7% THD (Bonded)

Weight & Mobility 200 lbs (Wheel Kit)

Lowest Verified Price

$1,099.00

$0.14 / Running Watt

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Dual-Fuel Score 8.2/10

Open-Frame Inverter 2.9% THD

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

Generac GP9200E 11,500W Peak / 9,200W Running PowerRush Home Backup Generator

Best For: Traditional gasoline 50-amp home backup with nationwide Generac dealer support.

Running / Surge 9,200W / 11,500W

Noise @ 23ft 72.5 dBA (Open-Frame)

Fuel & Runtime Gas EFI (15h)

Backup Outlet NEMA 14-50R

Power Purity <2.9% THD (Bonded)

Weight & Mobility 211 lbs (Wheel Kit)

Lowest Verified Price

$1,199.00

$0.13 / Running Watt

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Dual-Fuel Score 8.5/10

Enclosed Inverter 1.9% THD

Generac : 212cc 4-Stroke OHV Copper-Wound Alternator : Floating Neutral

Generac iQ3500 3,500W Peak / 3,000W Running Ultra-Quiet Enclosed Inverter

Best For: Ultra-quiet 53 dBA suburban patio placement for essential 120V home circuits.

Running / Surge 3,000W / 3,500W

Noise @ 23ft 53 dBA (Quiet)

Fuel & Runtime Gas EFI (14.1h)

Backup Outlet NEMA L14-30R

Power Purity <1.9% THD (Floating)

Weight & Mobility 109.1 lbs (Wheel Kit)

Lowest Verified Price

$1,249.00

$0.42 / Running Watt

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Dual-Fuel Score 8.6/10

Open-Frame Inverter 2.6% THD

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

Generac XT8500EFI 10,000W Peak / 8,500W Running Closed-Loop EFI Home Backup Generator

Best For: Homeowners wanting zero-carburetor-maintenance EFI reliability at half the price of a Honda.

Running / Surge 8,500W / 10,000W

Noise @ 23ft 70.5 dBA (Open-Frame)

Fuel & Runtime Gas EFI (16h)

Backup Outlet NEMA 14-50R

Power Purity <2.6% THD (Bonded)

Weight & Mobility 202 lbs (Wheel Kit)

Lowest Verified Price

$1,449.00

$0.17 / Running Watt

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