Compare Generators Side-by-Side
Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.
- Genmax GM9000iE
- Westinghouse ecoGen10000
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 | Genmax GM9000iE | Westinghouse ecoGen10000 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | Yes | No |
| Running watts | Winner: Winner: 7600 W | Winner: Winner: 7600 W |
| Starting watts | 9000 W | Winner: Winner: 10000 W |
| Noise (lower limit) | Winner: Winner: 62 dB | 72 dB |
| Weight | 233.7 lbs | Winner: Winner: 147.7 lbs |
| Run time @50% load | Winner: Winner: 10 h | 8 h |
| Run time @25% load | 14.5 h | 12 h |
| Fuel tank | 6.9 gal | 5.3 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 30.9 x 22.6 x 29.3 | 24 x 26.7 x 25.1 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | 5 | Not available |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | ≤3% % | <3% % |
| Engine | ||
| Engine | 458 cc Dinking OHV 4-stroke | 420 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric, Remote | Recoil, Electric, Remote |
| Warranty | ||
| Warranty | Not available | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 7600 W | 7600 W |
| Starting watts | 9000 W | 10000 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 | 14.5 h | 12 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | EPA, ANSI/PGMA G300-2023 | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Bonded to frame | NeutralBonded to frame |
| UPC | 798357188662 | 855464003247 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 7600 | 7600 |
| Starting Watts (Gasoline) | 9000 | 10000 |
| Runtime @ 50% Load (Gasoline) | 10 | Not available |
| Runtime @ 25% Load (Gasoline) | 14.5 | 12 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) | 2x Duplex 120V 20A (5-20R) GFCI1x 120/240V 30A (L14-30R)1x 120/240V 50A (14-50R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 458 | 420 |
| Engine Oil Type | 10W-30 | 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 14.5 | 12 |
| Runtime @ 50% Load (Gasoline) | 10 | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection, CO monitoring |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Starting Components | Not available | Recoil, Electric, Remote |
| Included Accessories | Funnel, Tool kit, Key fob, and Battery | Oil, funnel, tool kit, key fob, battery charger, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | Not available | 3 |
| Additional specs | ||
| Summary | The Genmax GM9000iE is a 7,600-watt gasoline inverter generator built around a 458cc 4-stroke engine. It delivers 9,000 peak watts for starting large appliances like air conditioners and refrigerators, then sustains 7,600 running watts for simultaneous multi-device operation. The inverter topology keeps total harmonic distortion at 3% or below, protecting laptops, TVs, and other sensitive gear from electrical damage. | The Westinghouse ecoGen10000 is a 10,000-watt gas-powered portable inverter generator featuring remote electric start, low THD, and a 50 Amp outlet, making it suitable for home backup power. |
- Most PowerfulGenmax GM9000iE7600W running
- QuietestGenmax GM9000iE62 dB
- Longest RuntimeGenmax GM9000iE10h at 50% load
Where to buy
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Genmax GM9000iE
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Westinghouse ecoGen10000
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