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 GM15000ET
- WEN TF1050iX
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 GM15000ET | WEN TF1050iX |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Tri-Fuel | Tri-Fuel |
| Inverter | No | Yes |
| Parallel capable | No | Yes |
| RV ready | Yes | Yes |
| Running watts | Winner: Winner: 13000 W | 8550 W |
| Starting watts | Winner: Winner: 15000 W | 10500 W |
| Noise (lower limit) | 76 dB | Winner: Winner: 66 dB |
| Weight | 242 lbs | Winner: Winner: 209.4 lbs |
| Run time @50% load | Winner: Winner: 11 h | 10.5 h |
| Run time @25% load | Not available | Not available |
| Fuel tank | 10.5 gal | 7.1 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 28 x 31.6 x 28.7 | 30.1 x 26.3 x 28.8 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | 12 | 5 |
| GFCI outlets | No | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | 23 % | 1.2 % |
| Engine | ||
| Engine | 520 cc OHV 4-stroke | 457 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric, Remote | Recoil, Electric |
| Warranty | ||
| Warranty | 1 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 11000 W | 8550 W |
| Starting watts | 15000 W | 10500 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 | 11 h | 10.5 h |
| Run time @25% load | Not available | Not available |
| Natural gas | Not available | Not available |
| Running watts | 12000 W | 7500 W |
| Starting watts | 12000 W | 8500 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 |
| Propane | Not available | Not available |
| Running watts | 13000 W | 8550 W |
| Starting watts | 13000 W | 9450 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 | 5.8 h |
| Run time @25% load | Not available | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | EPA, ANSI/PGMA G300-2023 | EPA, ANSI/PGMA G300-2023 |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | true |
| UPC | 760790901382 | Not available |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 11000 | 8550 |
| Running Watts (Propane) | 13000 | 8550 |
| Running Watts (Natural Gas) | 12000 | 7500 |
| Starting Watts (Gasoline) | 15000 | 10500 |
| Starting Watts (Propane) | 13000 | 9450 |
| Starting Watts (Natural Gas) | 12000 | 8500 |
| Runtime @ 50% Load (Gasoline) | 11 | 10.5 |
| Runtime @ 50% Load (Propane) | Not available | 5.8 |
| AC Outlet Types | AC outlets3x Duplex 120V 20A (5-20R)1x 120/240V 30A (L14-30R)1x 120/240V 50A (14-50R) | 1x Duplex 120V 20A (5-20R); 1x 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 | 520 | 457 |
| Engine Oil Type | SAE 10W/30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 50% Load (Gasoline) | 11 | 10.5 |
| Runtime @ 50% Load (Propane) | Not available | 5.8 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Starting Components | Recoil starter; Electric starter; Remote starter | Not available |
| Included Accessories | Oil, funnel, tool kit, key fob, battery charger, natural gas hose with NPT adapter, propane hose, cover, neutral bonding plug, battery, and wheel kit | Funnel, tool kit, battery charger, propane hose, and battery |
| Warranty & identification | ||
| Residential Warranty | Not available | 3 |
| Commercial Warranty | 1 | 3 |
| Additional specs | ||
| Summary | The Genmax GM15000ET is a 13,000-watt tri-fuel generator built for serious power demands. With 13,000 running watts and 15,000 starting watts, this unit can handle whole-house backup scenarios, including central air conditioning, refrigerators, well pumps, and multiple circuits running simultaneously. Because it runs on gasoline, propane, or natural gas, owners gain real flexibility during emergencies when one fuel source might be unavailable or during extended outages when tapping into a home natural gas line eliminates refueling trips entirely. | The WEN TF1050iX is an 8550-watt tri-fuel inverter generator that runs on gasoline, propane, or natural gas. This capacity sits at the threshold between mid-range jobsite power and whole-house backup. The inverter design delivers 1.2% THD, making it safe for laptops, televisions, and other sensitive electronics that would suffer damage from dirty power. Tri-fuel flexibility means you can match the available fuel source to your location or storage preference, though output varies by fuel type. On gasoline, the TF1050iX delivers its full 8550 running watts and 10500 starting watts. On propane, it maintains 8550 running watts but drops to 9450 starting watts. On natural gas, output falls to 7500 running watts and 8500 starting watts, a meaningful reduction if you depend on peak capacity. The 7.1-gallon fuel tank and 10.5-hour runtime at 50% load on gasoline mean you can run a moderate load overnight without refueling, though propane runtime drops to 5.8 hours at the same load. This generator bridges the gap between portable and stationary power, though its 209.4-pound weight requires serious planning for transport. |
- Most PowerfulGenmax GM15000ET13000W running
- QuietestWEN TF1050iX66 dB
- Longest RuntimeGenmax GM15000ET11h at 50% load
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Genmax GM15000ET
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WEN TF1050iX
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