Westinghouse iGen12000DFc
#3 in LargeFull review
A large dual-fuel inverter for whole-home backup with clean power and long run time. Best for homeowners with a transfer switch who want inverter quiet at open-frame output.
Amazon $1,899$1,899
The Westinghouse iGen12000DFc is the better inverter generator overall, rated 4.1 to 3.9. The Westinghouse iGen12000DFc leads on run time and starting. The WEN TF1050iX wins on fuel options. The WEN TF1050iX costs $250 less ($1,649 vs $1,899).
WEN TF1050iX
#5 in LargeFull review
A tri-fuel home-backup inverter that can sit on natural gas indefinitely. Good for a transfer switch or a 50 A RV.
WEN $1,649$1,649
Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Westinghouse iGen12000DFc for run time (19 hours on a tank at 25% load vs 13.8 hours on a tank at 25% load (scaled from 50%)) and starting (electric start with a remote fob or app vs push-button electric start).
- Choose the WEN TF1050iX for fuel options (gasoline, propane or natural gas vs gasoline or propane).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every large inverter generator; a clear win is highlighted. How we rank explains each one.
| Factor weight | Westinghouse iGen12000DFc | WEN TF1050iX |
|---|---|---|
| Overall rating | 4.1/5 | 3.9/5 |
| Value 30% | 76 $0.21 per running watt | 81 $0.19 per running watt |
| Quiet 20% | 50 64 dBA at light load, maker rating | 38 66 dBA at light load, maker rating |
| Run time 15% | 93 19 hours on a tank at 25% load | 56 13.8 hours on a tank at 25% load (scaled from 50%) |
| Fuel options 10% | 70 gasoline or propane | 100 gasoline, propane or natural gas |
| CO safety 10% | 100 shuts off when carbon monoxide builds up | 100 shuts off when carbon monoxide builds up |
| Warranty 10% | 50 3-year warranty | 50 3-year warranty |
| Starting 5% | 100 electric start with a remote fob or app | 80 push-button electric start |
Specifications
| Westinghouse iGen12000DFc | WEN TF1050iX | |
|---|---|---|
| Output | ||
| Gasoline | 9,000 W running, 12,000 W starting | 8,550 W running, 10,500 W starting |
| Propane | 8,100 W running, 11,000 W starting | 8,550 W running, 9,450 W starting |
| Natural gas | - | 7,700 W running |
| Outlets | 2 × 120 V, L14-30 | 2 × 120 V, L14-30, USB |
| Parallel capable | Yes | Yes |
| Total harmonic distortion | under 3% | under 1.2% |
| Price per watt | $0.21 | $0.19 |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline, propane, natural gas |
| Tank | 7.9 gal | 7.1 gal |
| Run time (gasoline) | 19 hr at 25% load | 10.5 hr at 50% load |
| Run time (propane, 20 lb tank) | 9 hr | 5.8 hr |
| Engine | 457 cc | 457 cc |
| Noise and safety | ||
| Rated noise (light load) | 64 dBA | 66 dBA |
| CO shutoff | Yes | Yes |
| CARB compliant | No | - |
| Build | ||
| Starting | Remote, electric and recoil | Electric and recoil |
| App | No | No |
| Wheels | Yes | Yes |
| Dimensions | 30.2 x 25.2 x 26.6 in | 30.1 x 26.3 x 28.8 in |
| Weight | 189 lb | 209.4 lb |
| Warranty | 3 years | 3 years |