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 3.7. The Westinghouse iGen12000DFc leads on run time and starting. The Champion 10000W Tri Fuel Open Frame wins on fuel options and value. The Champion 10000W Tri Fuel Open Frame costs $500.18 less ($1,398.82 vs $1,899).
Champion 10000W Tri Fuel Open Frame
#7 in LargeFull review
A big, low-cost-per-watt open-frame inverter for whole-house backup on gas, propane or natural gas. Too loud for campgrounds.
Amazon $1,398.82$1,398.82
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 15 hours on a tank at 25% load) and starting (electric start with a remote fob or app vs push-button electric start).
- Choose the Champion 10000W Tri Fuel Open Frame for fuel options (gasoline, propane or natural gas vs gasoline or propane) and value ($0.18 per running watt vs $0.21 per running watt).
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 | Champion 10000W Tri Fuel Open Frame |
|---|---|---|
| Overall rating | 4.1/5 | 3.7/5 |
| Value 30% | 76 $0.21 per running watt | 84 $0.18 per running watt |
| Quiet 20% | 50 64 dBA at light load, maker rating | 0 72 dBA at light load, maker rating |
| Run time 15% | 93 19 hours on a tank at 25% load | 64 15 hours on a tank at 25% load |
| 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 | Champion 10000W Tri Fuel Open Frame | |
|---|---|---|
| Output | ||
| Gasoline | 9,000 W running, 12,000 W starting | 7,750 W running, 10,000 W starting |
| Propane | 8,100 W running, 11,000 W starting | 6,975 W running, 10,000 W starting |
| Natural gas | - | 6,278 W running |
| Outlets | 2 × 120 V, L14-30 | 4 × 120 V, L14-30 |
| Parallel capable | Yes | No |
| Total harmonic distortion | under 3% | under 3% |
| Price per watt | $0.21 | $0.18 |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline, propane, natural gas |
| Tank | 7.9 gal | 7.5 gal |
| Run time (gasoline) | 19 hr at 25% load | 15 hr at 25% load |
| Run time (propane, 20 lb tank) | 9 hr | 8 hr |
| Engine | 457 cc | 459 cc |
| Noise and safety | ||
| Rated noise (light load) | 64 dBA | 72 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 | 27.1 x 28 x 26.2 in |
| Weight | 189 lb | 180.8 lb |
| Warranty | 3 years | 3 years |