Champion 8125-Watt Tri Fuel
#2 in Mid-sizeFull review
A mid-size tri-fuel generator for homes with a natural gas line and a transfer switch. It covers a furnace, well pump and fridge with fuel that never runs out.
Amazon $999$999
The Champion 8125-Watt Tri Fuel is the better portable generator overall, rated 4.4 to 4.2. The Champion 8125-Watt Tri Fuel leads on fuel options and value. The Generac GP6700E Dual Fuel EFI wins on run time. The Champion 8125-Watt Tri Fuel costs $160 less ($999 vs $1,159).
Generac GP6700E Dual Fuel EFI
#7 in Mid-sizeFull review
A fuel-injected dual-fuel generator for backing up a home’s essentials through a 30 A transfer switch, and the GP6700E DF to buy in California. Elsewhere the carbureted GP6700E DF does the same job for less.
Amazon $1,159$1,159
Prices 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 8125-Watt Tri Fuel for fuel options (gasoline, propane or natural gas vs gasoline or propane) and value ($0.15 per running watt vs $0.17 per running watt).
- Choose the Generac GP6700E Dual Fuel EFI for run time (13 hours on a tank at 50% load vs 12 hours on a tank at 50% load).
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 8125-Watt Tri Fuel | Generac GP6700E Dual Fuel EFI |
|---|---|---|
| Overall rating | 4.4/5 | 4.2/5 |
| Value 30% | 70 $0.15 per running watt | 60 $0.17 per running watt |
| Run time 15% | 80 12 hours on a tank at 50% load | 90 13 hours on a tank at 50% load |
| Fuel options 15% | 100 gasoline, propane or natural gas | 70 gasoline or propane |
| 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 8125-Watt Tri Fuel | Generac GP6700E Dual Fuel EFI | |
|---|---|---|
| Output | ||
| Gasoline | 6,500 W running, 8,125 W starting | 6,700 W running, 8,250 W starting |
| Propane | 6,000 W running, 7,500 W starting | 6,000 W running, 7,425 W starting |
| Natural gas | 5,500 W running, 6,875 W starting | - |
| Outlets | 4 × 120 V, L14-30 | 4 × 120 V, L14-30 |
| Transfer switch ready | Yes, 240 V | Yes, 240 V |
| Full power at 120 V | - | No |
| Price per watt | $0.15 | $0.17 |
| Fuel and run time | ||
| Fuel | Gasoline, propane, natural gas | Gasoline, propane |
| Tank | 8.5 gal | 7.5 gal |
| Run time (gasoline) | 12 hr at 50% load | 13 hr at 50% load |
| Run time (propane, 20 lb tank) | 6.5 hr | 6 hr |
| Engine | 389 cc | 340 cc |
| Noise and safety | ||
| Rated noise | 74 dBA | - |
| CO shutoff | Yes | Yes |
| CARB compliant | No | Yes |
| Build | ||
| Starting | Electric and recoil | Electric and recoil |
| Wheels | Yes | Yes |
| Dimensions | 28.7 x 27.5 x 26.1 in | 27.5 x 27 x 26.5 in |
| Weight | 206 lb | 181 lb |
| Warranty | 3 years | 3 years |
| Released | 2023-05 | - |