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Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.
- ECHO EG-3500
- Firman WH02942
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
| Specification | ECHO EG-3500 | Firman WH02942 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Dual-Fuel |
| Inverter | No | Yes |
| Parallel capable | No | Yes |
| RV ready | No | Yes |
| Running watts | 2800 W | Winner: Winner: 2900 W |
| Starting watts | Winner: Winner: 3500 W | 3200 W |
| Noise (lower limit) | 72 dB | Winner: Winner: 58 dB |
| Weight | 110 lbs | Winner: Winner: 90 lbs |
| Run time @50% load | Winner: Winner: 10 h | Not available |
| Run time @25% load | Not available | 10 h |
| Fuel tank | 4 gal | 1.8 gal |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 25 x 24.5 x 21.5 | 23.2 x 17.8 x 17.9 |
| Electrical | ||
| Voltage (AC) | 120 | 120 60 |
| Voltage (DC) | Not available | 12 |
| GFCI outlets | Yes | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | 3 % |
| Engine | ||
| Engine | 212 cc OHV 4-stroke | Firman Max-Pro Series OHV 4-stroke, cast iron sleeve |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil, Electric |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 2800 W | 2900 W |
| Starting watts | 3500 W | 3200 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 | Not available |
| Run time @25% load | Not available | 10 h |
| Propane | Not available | Not available |
| Running watts | Not available | 2600 W |
| Starting watts | Not available | 2900 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 | 19 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | Not available | true |
| Compliance | CARB, EPA | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Bonded to frame | Floating |
| UPC | 743184017586 | 840876130810 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 2800 | 2900 |
| Running Watts (Propane) | Not available | 2600 |
| Starting Watts (Gasoline) | 3500 | 3200 |
| Starting Watts (Propane) | Not available | 2900 |
| Runtime @ 50% Load (Gasoline) | 10 | Not available |
| Runtime @ 25% Load (Gasoline) | Not available | 10 |
| Runtime @ 25% Load (Propane) | Not available | 19 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R) | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke, cast iron sleeve |
| Engine Displacement | 212 | 171 |
| Cylinder Sleeve | Not available | Cast iron sleeve |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | Not available | 10 |
| Runtime @ 50% Load (Gasoline) | 10 | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Included equipment | ||
| Starting Components | Not available | Recoil, Electric |
| Included Accessories | Wheel kit | Oil, funnel, tool kit, battery charger, propane hose, and battery |
| Warranty & identification | ||
| Part Number | Not available | WH3200iE |
| 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 WH02942 is a 2,900-watt dual-fuel inverter generator built for users who need portable power without sacrificing runtime flexibility. On gasoline, it delivers 2,900 running watts and 3,200 starting watts. Switch to propane and the running output drops to 2,600 watts, but runtime at 25% load stretches to 19 hours versus 10 hours on gas. This makes it a practical choice for RV owners, campers, and homeowners seeking backup power that can run all night on a single fuel source. The 3% THD output means laptops, phones, and sensitive electronics stay protected from power surges. At 58 dB, it runs quieter than most job sites and many competitors, making it suitable for campgrounds and residential areas. |
- Most PowerfulFirman WH029422900W running
- QuietestFirman WH0294258 dB
- Longest RuntimeECHO EG-350010h at 50% load
Where to buy
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ECHO EG-3500
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Firman WH02942
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