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| Specification | Firman H03655 | AIVOLT VS12000411 |
|---|---|---|
| General | ||
| Product type | Generator | Not available |
| Fuel | Dual-Fuel | Dual-Fuel |
| Inverter | No | Yes |
| Parallel capable | No | Yes |
| RV ready | Yes | No |
| Running watts | 3650 W | Winner: Winner: 9000 W |
| Starting watts | 4550 W | Winner: Winner: 11250 W |
| Noise (lower limit) | 67 dB | Winner: Winner: 60 dB |
| Weight | Winner: Winner: 112 lbs | 220 lbs |
| Run time @50% load | Winner: Winner: 14 h | Not available |
| Run time @25% load | Not available | 19 h |
| Fuel tank | 5 gal | Not available |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 25.7 x 21.8 x 21.6 | 28.43L x 26.38W x 29.65H |
| Electrical | ||
| Voltage (AC) | 120V 60 Hz | 120V/240V |
| Voltage (DC) | Not available | Not available |
| GFCI outlets | No | Yes |
| Covered outlets | Yes | No |
| Automatic Voltage Regulation | Yes | No |
| THD | 25 % | 3 % |
| Engine | ||
| Engine | 208 cc OHV 4-stroke, cast iron sleeve | 459cc 4-strokes OHV air-cooled |
| Alternator | Not available | Not available |
| Starting system | Recoil | Not available |
| Warranty | ||
| Warranty | 3 years | Not available |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3650 W | 9000 W |
| Starting watts | 4550 W | 11250 W |
| Running amps (120V) | Not available | Not available |
| Running amps (240V) | Not available | Not available |
| Peak amps (120V) | Not available | Not available |
| Peak amps (240V) | Not available | Not available |
| Run time @50% load | 14 h | Not available |
| Run time @25% load | Not available | 19 h |
| Propane | Not available | Not available |
| Running watts | 3300 W | 8450 W |
| Starting watts | 4100 W | 10570 W |
| Running amps (120V) | Not available | Not available |
| Running amps (240V) | Not available | Not available |
| Peak amps (120V) | Not available | Not available |
| Peak amps (240V) | Not available | Not available |
| Run time @50% load | Not available | Not available |
| Run time @25% load | Not available | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | true |
| Compliance | EPA, ANSI/PGMA G300-2023 | Approved by the EPA and CARB |
| Security | Not available | Not available |
| Spark arrestor | Yes | No |
| Neutral | Floating | Not available |
| UPC | 840876136553 | Not available |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3650 | 9000 |
| Running Watts (Propane) | 3300 | 8450 |
| Starting Watts (Gasoline) | 4550 | 11250 |
| Starting Watts (Propane) | 4100 | 10570 |
| Runtime @ 50% Load (Gasoline) | 14 | Not available |
| Runtime @ 25% Load (Gasoline) | Not available | 19 |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120V 30A (TT-30R) | 2 120V 20A 5-20R GFCI outlets, 1 120V 30A L5-30R, 1 120V/240V 30A L14-30R, 1 120V/240V 50A 14-50R |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | 208 cc OHV 4-stroke, cast iron sleeve | 4 Stroke |
| Engine Displacement | 208 | 459 |
| Cylinder Sleeve | cast iron sleeve | Not available |
| Alternator Winding Material | Not available | 100% copper |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | Not available | 19 |
| Runtime @ 50% Load (Gasoline) | 14 | Not available |
| Outlets & connections | ||
| Transfer Switch Compatibility | Not available | Yes |
| Controls & display | ||
| Display Type | Not available | LED display |
| Idle Control System | Not available | Eco switch |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Built-in overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Starting Components | Oil, funnel, tool kit, propane hose, and wheel kit | Not available |
| Fuel Connection Components | Not available | LPG hose with regulator |
| Included Accessories | Oil, funnel, tool kit, propane hose, and wheel kit | Remote controller, battery charger, oil funnel, tool kits |
| Warranty & identification | ||
| Residential Warranty | 3 | Not available |
| Commercial Warranty | 3 | Not available |
| Additional specs | ||
| Summary | The Firman H03655 is a 3,650-watt dual-fuel generator built around a 208 cc OHV 4-stroke engine with a cast iron sleeve. Running on gasoline, it delivers 4,550 starting watts and 3,650 running watts. Switch to propane and output drops to 4,100 starting watts and 3,300 running watts. This power level runs a refrigerator, microwave, window air conditioner, or multiple power tools simultaneously. The dual-fuel flexibility means you can operate on whichever fuel is available, a practical advantage during extended outages or when propane storage is more convenient than gasoline.
At 67 dB at quarter load, the H03655 operates quietly enough for residential neighborhoods without disturbing neighbors. The 5-gallon tank delivers 14 hours of runtime at 50 percent load on gasoline, translating to roughly one full day of moderate use before refueling. The RV-ready configuration and included wheel kit position this unit as a go-anywhere power source for camping, job sites, and home backup scenarios. | The AIVOLT VS12000411 is a dual-fuel generator with a rated wattage of 9000 and a peak wattage of 11250. It features a 459cc 4-stroke OHV engine and includes electric and remote start options. |
