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 3.9. The Generac GP6700E Dual Fuel leads on fuel options and run time. The Westinghouse WGen7500c wins on value and starting. The Westinghouse WGen7500c costs $50 less ($849 vs $899).
Westinghouse WGen7500c
#9 in Mid-sizeFull review
A gasoline generator big enough for most essentials through a transfer switch, with remote start. Best for homeowners who don’t need propane and want simple 240 V backup.
Amazon $849$849
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) and run time (11 hours on a tank at 50% load vs 8.4 hours on a tank at 50% load (scaled from 25%)).
- Choose the Westinghouse WGen7500c for value ($0.11 per running watt vs $0.13 per running watt) and starting (electric start with a remote fob or app vs push-button electric start).
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 | Westinghouse WGen7500c |
|---|---|---|
| Overall rating | 4.3/5 | 3.9/5 |
| Value 30% | 79 $0.13 per running watt | 89 $0.11 per running watt |
| Run time 15% | 70 11 hours on a tank at 50% load | 44 8.4 hours on a tank at 50% load (scaled from 25%) |
| 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 | 100 electric start with a remote fob or app |
Specifications
| Generac GP6700E Dual Fuel | Westinghouse WGen7500c | |
|---|---|---|
| Output | ||
| Gasoline | 6,700 W running, 8,250 W starting | 7,500 W running, 9,500 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 |
| Total harmonic distortion | - | under 23% |
| Price per watt | $0.13 | $0.11 |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline |
| Tank | 7.5 gal | 6.6 gal |
| Run time (gasoline) | 11 hr at 50% load | 11 hr at 25% load |
| Run time (propane, 20 lb tank) | 6 hr | - |
| Engine | 340 cc | 420 cc |
| Noise and safety | ||
| Rated noise | - | 72 dBA |
| CO shutoff | Yes | Yes |
| CARB compliant | No | No |
| Build | ||
| Starting | Electric and recoil | Remote, electric and recoil |
| Wheels | Yes | Yes |
| Dimensions | - | 27.2 x 26.1 x 26 in |
| Weight | 174.2 lb | 197.1 lb |
| Warranty | - | 3 years |
| Released | - | 2022-05 |