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 GM10500iETC
- 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 GM10500iETC | WEN TF1050iX |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Tri-Fuel | Tri-Fuel |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | Yes | Yes |
| Running watts | 8500 W | Winner: Winner: 8550 W |
| Starting watts | Winner: Winner: 10500 W | Winner: Winner: 10500 W |
| Noise (lower limit) | Winner: Winner: 64 dB | 66 dB |
| Weight | 244.7 lbs | Winner: Winner: 209.4 lbs |
| Run time @50% load | Not available | Winner: Winner: 10.5 h |
| Run time @25% load | 14 h | Not available |
| Fuel tank | 6.9 gal | 7.1 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 30.9 x 22.6 x 29.3 | 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 | ≤3% % | 1.2 % |
| Engine | ||
| Engine | 458 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 | 8500 W | 8550 W |
| Starting watts | 10500 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 | Not available | 10.5 h |
| Run time @25% load | 14 h | Not available |
| Natural gas | Not available | Not available |
| Running watts | 6800 W | 7500 W |
| Starting watts | 8400 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 | 8000 W | 8550 W |
| Starting watts | 9500 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 | CARB, EPA, ANSI/PGMA G300-2023 | EPA, ANSI/PGMA G300-2023 |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | true |
| UPC | 742332650842 | Not available |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 8500 | 8550 |
| Running Watts (Propane) | 8000 | 8550 |
| Running Watts (Natural Gas) | 6800 | 7500 |
| Starting Watts (Gasoline) | 10500 | 10500 |
| Starting Watts (Propane) | 9500 | 9450 |
| Starting Watts (Natural Gas) | 8400 | 8500 |
| Runtime @ 50% Load (Gasoline) | Not available | 10.5 |
| Runtime @ 50% Load (Propane) | Not available | 5.8 |
| Runtime @ 25% Load (Gasoline) | 14 | Not available |
| AC Outlet Types | 2x 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 | 458 cc OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 458 | 457 |
| Engine Oil Type | SAE 10W/30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 14 | Not available |
| Runtime @ 50% Load (Gasoline) | Not available | 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, Electric, Remote | Not available |
| Included Accessories | Funnel, tool kit, key fob, battery charger, natural gas hose with NPT adapter, propane hose, RV adapter, cover, neutral bonding plug, and battery | Funnel, tool kit, battery charger, propane hose, and battery |
| Warranty & identification | ||
| Residential Warranty | 1 | 3 |
| Commercial Warranty | 1 | 3 |
| Additional specs | ||
| Summary | The Genmax GM10500iETC is an 8500-watt tri-fuel inverter generator that runs on gasoline, propane, or natural gas. This wattage handles mid-to-large loads like air conditioning units, power tools, and multiple household appliances simultaneously. The tri-fuel flexibility means users can switch fuels based on availability and cost, a significant advantage for both emergency backup and remote work sites. | 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 PowerfulWEN TF1050iX8550W running
- QuietestGenmax GM10500iETC64 dB
- Longest RuntimeWEN TF1050iX10.5h at 50% load
Where to buy
Prices can change. We update these automatically.
Genmax GM10500iETC
Store links
No links yet.
WEN TF1050iX
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.