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
3.9/5
A tri-fuel home-backup inverter that can sit on natural gas indefinitely. Good for a transfer switch or a 50 A RV.
- 8,550 / 10,500 WRunning / starting
- Gasoline, propane, natural gasFuel
- 10.5 hr at 50% loadRun time
- 66 dBA at light loadNoise
- 209.4 lbWeight
- $0.19Price / W
Check price at WEN$1,649
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Runs on gasoline, propane or natural gas
- Enough power for most of a house through a transfer switch
- 50 A outlet for a big RV or a Level 2 EV charger
- Shuts itself off if carbon monoxide builds up
Cons
- Propane run time on a 20 lb tank is short, so plan on larger tanks
- About 209 lb, so it needs flat ground to move
- Second and third warranty years cover parts only
How it scores
The rating comes from 7 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | TF1050iX |
|---|---|
| Output | |
| Gasoline | 8,550 W running, 10,500 W starting |
| Propane | 8,550 W running, 9,450 W starting |
| Natural gas | 7,700 W running |
| Outlets | 2 × 120 V, L14-30, USB |
| Parallel capable | Yes |
| Total harmonic distortion | under 1.2% |
| Price per watt | $0.19 |
| Fuel and run time | |
| Fuel | Gasoline, propane, natural gas |
| Tank | 7.1 gal |
| Run time (gasoline) | 10.5 hr at 50% load |
| Run time (propane, 20 lb tank) | 5.8 hr |
| Engine | 457 cc |
| Noise and safety | |
| Rated noise (light load) | 66 dBA |
| CO shutoff | Yes |
| Build | |
| Starting | Electric and recoil |
| App | No |
| Wheels | Yes |
| Dimensions | 30.1 x 26.3 x 28.8 in |
| Weight | 209.4 lb |
| Warranty | 3 years |
Alternatives in this size
Champion 6500W Tri Fuel Inverter
#4 in LargeFull review
A mid-size home-backup inverter for people with a natural gas line or a transfer switch who want unattended starting. It also covers a 30 A RV.
Amazon $1,299$1,299
GENMAX GM8000iETC
#6 in LargeFull review
A mid-priced tri-fuel inverter for home backup through a transfer switch, especially for houses with a natural gas line. Auto start, app control and CO shutoff are unusual at this price.
Amazon $1,499.99$1,499.99
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