FIRMAN · Portable generator
H03655
4,550 starting watts and 3,650 running watts with gasoline, propane operation.
$899.99
Direct price snapshot
Visual spec gallery
Core specifications, simplified.
Up to 4,550 starting watts
4,550W starting
4,100W starting
Manufacturer runtime
14hrs
Operating volume
67dB 1/2 load
Fuel tank
5
112
Unit weight
25.7x21.8x21.6
Unit dimensions
- Warranty
- 3-year warranty
- Certifications
- CARB · CETL · EPA · NOM
- Availability
- Available
Starting
Recoil
Power quality
25% THD
Safety
Low-oil shutdown · CO Alert
Electrical
120 · 60
1 × 5-20R 120V 20A DUPLEX · 1 × L5-30R 120V 30A TWISTLOCK · 1 × TT-30R 120V 30A RV
Official product gallery
Product views and FIRMAN infographics.
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Complete specifications
Every official field, organized.
The technical fields below come from FIRMAN’s model-specific specification file. Product photos and infographics come from the official product gallery. Confirm current documentation before purchase.
Manufacturer overview
The FIRMAN H03655 Hybrid Dual Fuel Portable Generator delivers clean, efficient, and versatile power, running on both gasoline and propane for maximum flexibility. With 4,550 starting watts and 3,650 running watts on gas, or 4,100 starting watts and 3,300 running watts on propane, it provides reliable energy for camping, events, or home backup needs. Designed with safety in mind, the H03655 features a CO Alert Sensor, which automatically shuts down the generator if dangerous carbon monoxide levels are detected. Compact and easy to transport, this dual-fuel generator ensures power is always within reach. The H03655 comes with an engine oil bottle, oil funnel, spark plug wrench, two double open-ended wrenches (10mm x 12mm), and an LPG regulator with a hose holder.
Specifications · Certifications
- CARB Certified
- Yes
- EPA Certified
- YES
- cETL Certified
- YES
- NOM Certified
- YES
- UL Certified
- NO
Specifications · Output
- Running Watts
- 3650 (Gas) 3300 (LPG)
- Starting Watts
- 4550 (Gas) 4100 (LPG)
- AC Voltage
- 120
- Frequency (Hertz)
- 60
- Decibels
- 67dB 1/2 load
- Run Time
- 14hrs
- THD @ Full Load
- 25%
- CO Alert
- YES
Specifications · Control Panel
- Recoil Start
- YES
- 5-20R 120V 20A DUPLEX
- 1
- L5-30R 120V 30A TWISTLOCK
- 1
- TT-30R 120V 30A RV
- 1
Specifications · Machine
- Low Oil Shutoff
- YES
- Power Stream Alternator
- YES
- Cast Iron Sleeve
- YES
Specifications · Fuel System
- Fuel
- Gas/LPG
- Tank Size
- 5
- Steel/Plastic
- STEEL
Specifications · Wheel Kit
- Wheels
- 8.0" -black/yellow -plastic-flat free
- Handle
- single folding w/grip
Packaging · Unit
- UPC
- 840876136553
- Unit Dimensions
- 25.7x21.8x21.6
- Unit Length
- 25.7
- Unit Width
- 21.8
- Unit Height
- 21.6
- Unit Weight
- 112
Packaging · Carton
- Carton Dimensions
- 27.6x18.1x20.5
- Carton Length
- 27.6
- Carton Width
- 18.1
- Carton Height
- 20.5
- Carton Weight
- 128
Best-fit uses
- Home Projects
- Power Outage
- Tailgate
- Work
Standout features
- Dual-fuel flexibility
- CO Alert shutdown protection
- Recoil start
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