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Firman Backup Generators

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Firman Power Equipment engineers durable tri-fuel and dual-fuel portable generators. Each unit includes extended run tanks, heavy-duty wheel kits, and custom gas regulator hoses engineered for cold-weather reliability.

Engineering Headquarters Peoria, Arizona, USA
Factory Warranty Coverage 3-Year Limited Warranty
Lab Tested Fleet 5 Validated Models
Warranty Triage & Technical Support

Official Firman Factory Service & Local Contractors

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

Call: 1-844-347-6261 Factory Portal Find Certified Installer

Tested Firman Generators (5)

Showing all lab-tested Firman models
Dual-Fuel Score 8.5/10
Open-Frame Inverter 4.9% THD
Firman : 439cc Firman Max Pro OHV Engine : Bonded Neutral

Firman H07552 9,400W Peak / 7,500W Running Dual-Fuel Generator with Electric Start

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

Running / Surge 7,500W / 9,400W
Noise @ 23ft 72.5 dBA (Open-Frame)
Fuel & Runtime Gas EFI (15h)
Backup Outlet NEMA 14-50R
Power Purity <4.9% THD (Bonded)
Weight & Mobility 212 lbs (Wheel Kit)
Lowest Verified Price
$999.00
$0.13 / Running Watt
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Tri-Fuel Score 8.3/10
Open-Frame Inverter 2.9% THD
Firman : 439cc 4-Stroke OHV Copper-Wound Alternator : Bonded Neutral

Firman T08073 10,000W Peak / 8,000W Running Tri-Fuel Home Backup Generator

Best For: Sub-$1,000 tri-fuel home backup when paired with a Micro-Air EasyStart soft-starter.

Running / Surge 8,000W / 10,000W
Noise @ 23ft 71 dBA (Open-Frame)
Fuel & Runtime Gas/LPG/NG (14h)
Backup Outlet NEMA 14-50R
Power Purity <2.9% THD (Bonded)
Weight & Mobility 213 lbs (Wheel Kit)
Lowest Verified Price
$999.00
$0.12 / Running Watt
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Dual-Fuel Score 8.6/10
Enclosed Inverter 1.9% THD
Firman : 171cc Firman Max Pro OHV Engine : Floating Neutral

Firman WH03042 3,300W Peak / 3,000W Running Dual-Fuel Inverter Generator

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

Running / Surge 3,000W / 3,300W
Noise @ 23ft 58 dBA (Quiet)
Fuel & Runtime Gas EFI (10.5h)
Backup Outlet NEMA TT-30R
Power Purity <1.9% THD (Floating)
Weight & Mobility 90 lbs (Wheel Kit)
Lowest Verified Price
$799.00
$0.27 / Running Watt
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Dual-Fuel Score 8.4/10
Enclosed Inverter 2% THD
Firman : 208cc 4-Stroke OHV Copper-Wound Alternator : Floating Neutral

Firman WH03242 4,000W Peak / 3,200W Running Enclosed Dual-Fuel RV Inverter

Best For: Affordable sub-$800 electric-start propane and gasoline RV and fridge backup.

Running / Surge 3,200W / 4,000W
Noise @ 23ft 57 dBA (Quiet)
Fuel & Runtime Gas EFI (11h)
Backup Outlet NEMA L14-30R
Power Purity <2% THD (Floating)
Weight & Mobility 89 lbs (Wheel Kit)
Lowest Verified Price
$799.00
$0.25 / Running Watt
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Tri-Fuel Score 8.6/10
Enclosed Inverter 1.9% THD
Firman : 338cc 4-Stroke OHV Copper-Wound Alternator : Floating Neutral

Firman WT05571 6,850W Peak / 5,500W Running Whisper Series Enclosed Tri-Fuel Inverter

Best For: Quiet 58 dBA 30-amp home transfer switches running on natural gas or propane.

Running / Surge 5,500W / 6,850W
Noise @ 23ft 58 dBA (Quiet)
Fuel & Runtime Gas/LPG/NG (13h)
Backup Outlet NEMA L14-30R
Power Purity <1.9% THD (Floating)
Weight & Mobility 146 lbs (Wheel Kit)
Lowest Verified Price
$1,399.00
$0.25 / Running Watt
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