The largest CARB-compliant open-frame generator Champion sells, for California homes that want gas or propane backup through a transfer switch, or power for a 50 A RV.
The Champion 10,000-Watt Dual Fuel CARB and the Generac GP8000E are evenly matched, rated 4.0 and 3.9. The Champion 10,000-Watt Dual Fuel CARB leads on fuel options.

A gasoline generator for backing up most of a home’s essentials through a 30 A transfer switch at a low price. Buyers who want propane should look at a dual-fuel model.
Amazon $1,049Prices were last checked October 28, 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 Champion 10,000-Watt Dual Fuel CARB for fuel options (gasoline or propane vs gasoline only).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every mid-size portable generator; a clear win is highlighted. How we rank explains each one.
| Factor weight | Champion 10,000-Watt Dual Fuel CARB | Generac GP8000E |
|---|---|---|
| Overall rating | 4.0/5 | 3.9/5 |
| Value 30% | 50 no current price (neutral score used) | 80 $0.13 per running watt |
| Run time 15% | 60 10 hours on a tank at 50% load | 60 10 hours on a tank at 50% load |
| Fuel options 15% | 70 gasoline or propane | 0 gasoline only |
| Home hookup 15% | 100 240 V outlet for a transfer switch | 100 240 V outlet for a transfer switch |
| CO safety 10% | 100 shuts off when carbon monoxide builds up | 100 shuts off when carbon monoxide builds up |
| Warranty 10% | 67 3-year warranty | 67 3-year warranty |
| Starting 5% | 80 push-button electric start | 80 push-button electric start |
Specifications
| Champion 10,000-Watt Dual Fuel CARB | Generac GP8000E | |
|---|---|---|
| Output | ||
| Gasoline | 8,000 W running, 10,000 W starting | 8,000 W running, 10,000 W starting |
| Propane | 7,200 W running, 9,000 W starting | - |
| Outlets | 4 × 120 V, L14-30, 14-50 | 4 × 120 V, L14-30 |
| Transfer switch ready | Yes, 240 V | Yes, 240 V |
| Full power at 120 V | No | No |
| Price per watt | - | $0.13 |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline |
| Tank | 7.7 gal | 7.9 gal |
| Run time (gasoline) | 10 hr at 50% load | 10 hr at 50% load |
| Run time (propane, 20 lb tank) | 5 hr | - |
| Engine | 458 cc | 420 cc |
| Noise and safety | ||
| Rated noise | 74 dBA | - |
| CO shutoff | Yes | Yes |
| CARB compliant | Yes | No |
| Build | ||
| Starting | Electric and recoil | Electric and recoil |
| Wheels | Yes | Yes |
| Dimensions | 28.7 x 28.5 x 25.8 in | 27.2 x 27 x 26.5 in |
| Weight | 208 lb | 198 lb |
| Warranty | 3 years | 3 years |
| Released | 2023-12 | 2023-12 |