Generac GP6700E Dual Fuel
#6 in Mid-sizeFull review
A mid-size dual-fuel generator for home backup at a low price, for buyers who want propane as a fallback. The 50-state fuel-injected model costs more.
Amazon $899$899
The Generac GP6700E Dual Fuel is the better portable generator overall, rated 4.3 to 3.7. The Generac GP6700E Dual Fuel leads on fuel options, starting and value. The Generac GP6700E Dual Fuel costs $30.99 less ($899 vs $929.99).
Champion 7500-Watt CARB
#15 in Mid-sizeFull review
A mid-size gas generator for California homes that need a CARB-compliant unit to run essential circuits through a transfer switch.
Tractor Supply $929.99$929.99
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 Generac GP6700E Dual Fuel for fuel options (gasoline or propane vs gasoline only), starting (push-button electric start vs pull start only) and value ($0.13 per running watt vs $0.15 per running watt).
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 | Generac GP6700E Dual Fuel | Champion 7500-Watt CARB |
|---|---|---|
| Overall rating | 4.3/5 | 3.7/5 |
| Value 30% | 79 $0.13 per running watt | 69 $0.15 per running watt |
| Run time 15% | 70 11 hours on a tank at 50% load | 70 11 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% | 50 warranty not published (neutral score used) | 67 3-year warranty |
| Starting 5% | 80 push-button electric start | 0 pull start only |
Specifications
| Generac GP6700E Dual Fuel | Champion 7500-Watt CARB | |
|---|---|---|
| Output | ||
| Gasoline | 6,700 W running, 8,250 W starting | 6,000 W running, 7,500 W starting |
| Propane | 6,000 W running, 7,425 W starting | - |
| Outlets | L14-30 | 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 | $0.15 |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline |
| Tank | 7.5 gal | 7.7 gal |
| Run time (gasoline) | 11 hr at 50% load | 11 hr at 50% load |
| Run time (propane, 20 lb tank) | 6 hr | - |
| Engine | 340 cc | 389 cc |
| Noise and safety | ||
| Rated noise | - | 74 dBA |
| CO shutoff | Yes | Yes |
| CARB compliant | No | Yes |
| Build | ||
| Starting | Electric and recoil | Recoil (pull) |
| Wheels | Yes | Yes |
| Dimensions | - | 26.9 x 21.7 x 22.6 in |
| Weight | 174.2 lb | 164 lb |
| Warranty | - | 3 years |
| Released | - | 2021-08 |