A large tri-fuel generator for whole-home backup on a natural gas line, where it can run for days. Less suited to gasoline-only use, where it burns through a tank quickly.
Price checked October 28, 2026. As an Amazon Associate we earn from qualifying purchases.
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.
| Model number | 201438 |
|---|---|
| Output | |
| Gasoline | 10,000 W running, 12,500 W starting |
| Propane | 9,000 W running, 11,250 W starting |
| Natural gas | 8,000 W running, 10,000 W starting |
| Outlets | 4 × 120 V, L14-30, 14-50 |
| Transfer switch ready | Yes, 240 V |
| Price per watt | $0.13 |
| Fuel and run time | |
| Fuel | Gasoline, propane, natural gas |
| Tank | 7.7 gal |
| Run time (gasoline) | 8 hr at 50% load |
| Run time (propane, 20 lb tank) | 3 hr |
| Engine | 500 cc |
| Noise and safety | |
| Rated noise | 74 dBA |
| CO shutoff | Yes |
| CARB compliant | No |
| Build | |
| Starting | Electric and recoil |
| Wheels | Yes |
| Dimensions | 29 x 28.5 x 25.8 in |
| Weight | 231 lb |
| Warranty | 3 years |
| Released | 2025-02 |
A large tri-fuel generator for home backup through a 50 A transfer switch, for homeowners with a natural gas line who want to run as long as the outage lasts. Costs little more than the dual-fuel WGen9500DFc.
Amazon $1,149A large dual-fuel generator with clean power and remote start for whole-home backup through a 50 A transfer switch. A good fit for homeowners without a natural gas line who want more than 10,000 W.
Amazon $1,349A large tri-fuel generator with fuel injection for whole-home backup, and the version to buy in California. Elsewhere the carbureted GP9500E does the same job for less.
Amazon $1,399Compare the Champion 12,500-Watt Tri Fuel with any other portable generator →
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