Generac GP8000E
#10 in Mid-sizeFull review
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 $1,049$1,049
The Generac GP8000E and the WEN DF1100T are evenly matched, rated 3.9 and 3.9. The Generac GP8000E leads on CO safety, warranty and run time. The WEN DF1100T wins on fuel options and value. The WEN DF1100T costs $200 less ($849 vs $1,049).
WEN DF1100T
#11 in Mid-sizeFull review
A mid-size dual-fuel generator for feeding a 50 A transfer switch on a budget, though the CO-sensing DF1100X is the safer pick.
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 GP8000E for CO safety (shuts off when carbon monoxide builds up vs no CO shutoff), warranty (3-year warranty vs 2-year warranty) and run time (10 hours on a tank at 50% load vs 8.5 hours on a tank at 50% load).
- Choose the WEN DF1100T for fuel options (gasoline or propane vs gasoline only) and value ($0.10 per running watt vs $0.13 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 GP8000E | WEN DF1100T |
|---|---|---|
| Overall rating | 3.9/5 | 3.9/5 |
| Value 30% | 80 $0.13 per running watt | 94 $0.10 per running watt |
| Run time 15% | 60 10 hours on a tank at 50% load | 45 8.5 hours on a tank at 50% load |
| Fuel options 15% | 0 gasoline only | 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 | 0 no CO shutoff |
| Warranty 10% | 67 3-year warranty | 33 2-year warranty |
| Starting 5% | 80 push-button electric start | 80 push-button electric start |
Specifications
| Generac GP8000E | WEN DF1100T | |
|---|---|---|
| Output | ||
| Gasoline | 8,000 W running, 10,000 W starting | 8,300 W running, 11,000 W starting |
| Propane | - | 7,500 W running, 9,500 W starting |
| Outlets | 4 × 120 V, L14-30 | 4 × 120 V, L5-30, 14-50 |
| Transfer switch ready | Yes, 240 V | Yes, 240 V |
| Full power at 120 V | No | No |
| Price per watt | $0.13 | $0.10 |
| Fuel and run time | ||
| Fuel | Gasoline | Gasoline, propane |
| Tank | 7.9 gal | 6.6 gal |
| Run time (gasoline) | 10 hr at 50% load | 8.5 hr at 50% load |
| Run time (propane, 20 lb tank) | - | 3 hr |
| Engine | 420 cc | 457 cc |
| Noise and safety | ||
| CO shutoff | Yes | No |
| CARB compliant | No | - |
| Build | ||
| Starting | Electric and recoil | Electric and recoil |
| Wheels | Yes | Yes |
| Dimensions | 27.2 x 27 x 26.5 in | 27.3 x 20.6 x 21.9 in |
| Weight | 198 lb | 213.8 lb |
| Warranty | 3 years | 2 years |
| Released | 2023-12 | 2018-11 |