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| Specification | ECHO EG-3500 | Firman H03655 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Dual-Fuel |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | No | Yes |
| Running watts | 2800 W | Winner: Winner: 3650 W |
| Starting watts | 3500 W | Winner: Winner: 4550 W |
| Noise (lower limit) | 72 dB | Winner: Winner: 67 dB |
| Weight | Winner: Winner: 110 lbs | 112 lbs |
| Run time @50% load | 10 h | Winner: Winner: 14 h |
| Run time @25% load | Not available | Not available |
| Fuel tank | 4 gal | 5 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 25 x 24.5 x 21.5 | 25.7 x 21.8 x 21.6 |
| Electrical | ||
| Voltage (AC) | 120 | 120V 60 Hz |
| Voltage (DC) | Not available | Not available |
| GFCI outlets | Yes | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | 25 % |
| Engine | ||
| Engine | 212 cc OHV 4-stroke | 208 cc OHV 4-stroke, cast iron sleeve |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 2800 W | 3650 W |
| Starting watts | 3500 W | 4550 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 | 10 h | 14 h |
| Run time @25% load | Not available | Not available |
| Propane | Not available | Not available |
| Running watts | Not available | 3300 W |
| Starting watts | Not available | 4100 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 | Not available | false |
| Compliance | CARB, EPA | EPA, ANSI/PGMA G300-2023 |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Bonded to frame | Floating |
| UPC | 743184017586 | 840876136553 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 2800 | 3650 |
| Running Watts (Propane) | Not available | 3300 |
| Starting Watts (Gasoline) | 3500 | 4550 |
| Starting Watts (Propane) | Not available | 4100 |
| Runtime @ 50% Load (Gasoline) | 10 | 14 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R) | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120V 30A (TT-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | 208 cc OHV 4-stroke, cast iron sleeve |
| Engine Displacement | 212 | 208 |
| Cylinder Sleeve | Not available | cast iron sleeve |
| Runtime & fuel system | ||
| Runtime @ 50% Load (Gasoline) | 10 | 14 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | No | Yes |
| Included equipment | ||
| Starting Components | Not available | Oil, funnel, tool kit, propane hose, and wheel kit |
| Included Accessories | Wheel kit | Oil, funnel, tool kit, propane hose, and wheel kit |
| Warranty & identification | ||
| Residential Warranty | Not available | 3 |
| Commercial Warranty | Not available | 3 |
| Additional specs | ||
| Summary | The ECHO EG-3500 is a 2,800-watt gasoline generator built around a 212 cc OHV 4-stroke engine. At this wattage, it handles essential household loads like refrigerators, sump pumps, and power tools, but cannot run a central air conditioner or multiple high-demand appliances simultaneously. The 3,500-watt peak output gives it a brief surge capacity for motor startup, which matters when powering devices with inrush current demands. ECHO positions this unit for homeowners managing short outages, campers needing overnight power, and contractors powering hand tools on job sites where grid access is unavailable. | 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. |
