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| Specification | Firman W03383 | Genmax GM3500iAED |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Dual-Fuel |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | Yes | No |
| Running watts | Winner: Winner: 3300 W | 3200 W |
| Starting watts | Winner: Winner: 3650 W | 3500 W |
| Noise (lower limit) | Winner: Winner: 58 dB | 62 dB |
| Weight | 91 lbs | Winner: Winner: 56.2 lbs |
| Run time @50% load | Not available | Not available |
| Run time @25% load | Winner: Winner: 9 h | Winner: Winner: 9 h |
| Fuel tank | 1.8 gal | 1.7 gal |
| Fuel gauge | No | Yes |
| Approx. dimensions (L × W × H) | 23.2 x 17.8 x 17.9 | 20.9 x 12.2 x 19.7 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 12 | 5 |
| GFCI outlets | No | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | <3% % | ≤3% % |
| Engine | ||
| Engine | 193 cc Firman Max-Pro Series OHV 4-stroke, cast iron sleeve | 145 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric, Remote | Recoil, Electric, Remote |
| Warranty | ||
| Warranty | 3 years | 1 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3300 W | 3200 W |
| Starting watts | 3650 W | 3500 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 | 9 h | 8 h |
| Propane | Not available | Not available |
| Running watts | Not available | 2800 W |
| Starting watts | Not available | 3100 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 | 16 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | CARB, EPA | EPA, ANSI/PGMA G300-2023 |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Not available | true |
| UPC | 840876133835 | 713424639021 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3300 | 3200 |
| Running Watts (Propane) | Not available | 2800 |
| Starting Watts (Gasoline) | 3650 | 3500 |
| Starting Watts (Propane) | Not available | 3100 |
| Runtime @ 25% Load (Gasoline) | 9 | 8 |
| Runtime @ 25% Load (Propane) | Not available | 16 |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R)1x 120V 30A (TT-30R) | 1x Duplex 120V 20A (5-20R) 1x 120V 30A (L5-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 193 | 145 |
| Cylinder Sleeve | cast iron sleeve | Not available |
| Engine Oil Type | Not available | 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 9 | 8 |
| Safety & compliance | ||
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | No | Yes |
| Included equipment | ||
| Included Accessories | Oil, funnel, tool kit, key fob, battery charger, battery charging cables, and battery | Funnel, tool kit, key fob, propane hose, RV adapter, and battery |
| Additional specs | ||
| Summary | The Firman W03383 is a 3300-watt inverter generator built around a 193cc OHV 4-stroke engine with a cast iron sleeve. At this wattage, it can run a refrigerator, microwave, and several lights simultaneously, or power essential household circuits during an outage. The inverter technology keeps total harmonic distortion below 3%, which protects laptops, smartphones, and other sensitive electronics from voltage spikes. This unit bridges the gap between lightweight portables and mid-range backup power, making it useful for both recreational trips and emergency home backup. | The Genmax GM3500iAED is a 3,200-watt dual-fuel inverter generator that runs on gasoline or propane. At 56.2 lbs, it handles essential household loads like refrigerators and small power tools while remaining portable enough for camping or job sites. The 62 dB noise level keeps it residential-friendly. |