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
The WEN DF1100T and the Generac GP8000E EFI are evenly matched, rated 3.9 and 3.9. The WEN DF1100T leads on fuel options and value. The Generac GP8000E EFI wins on CO safety, run time and warranty. The WEN DF1100T costs $450 less ($849 vs $1,299).
Generac GP8000E EFI
#12 in Mid-sizeFull review
A fuel-injected gasoline generator for backing up a home’s essentials through a 30 A transfer switch, and the GP8000E to buy in California. Elsewhere the carbureted GP8000E does the same job for less.
Amazon $1,299$1,299
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 WEN DF1100T for fuel options (gasoline or propane vs gasoline only) and value ($0.10 per running watt vs $0.16 per running watt).
- Choose the Generac GP8000E EFI for CO safety (shuts off when carbon monoxide builds up vs no CO shutoff), run time (12 hours on a tank at 50% load vs 8.5 hours on a tank at 50% load) and warranty (3-year warranty vs 2-year warranty).
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 | WEN DF1100T | Generac GP8000E EFI |
|---|---|---|
| Overall rating | 3.9/5 | 3.9/5 |
| Value 30% | 94 $0.10 per running watt | 66 $0.16 per running watt |
| Run time 15% | 45 8.5 hours on a tank at 50% load | 80 12 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% | 0 no CO shutoff | 100 shuts off when carbon monoxide builds up |
| Warranty 10% | 33 2-year warranty | 67 3-year warranty |
| Starting 5% | 80 push-button electric start | 80 push-button electric start |
Specifications
| WEN DF1100T | Generac GP8000E EFI | |
|---|---|---|
| Output | ||
| Gasoline | 8,300 W running, 11,000 W starting | 8,000 W running, 10,000 W starting |
| Propane | 7,500 W running, 9,500 W starting | - |
| Outlets | 4 × 120 V, L5-30, 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 | $0.10 | $0.16 |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline |
| Tank | 6.6 gal | 7.9 gal |
| Run time (gasoline) | 8.5 hr at 50% load | 12 hr at 50% load |
| Run time (propane, 20 lb tank) | 3 hr | - |
| Engine | 457 cc | 420 cc |
| Noise and safety | ||
| CO shutoff | No | Yes |
| CARB compliant | - | Yes |
| Build | ||
| Starting | Electric and recoil | Electric and recoil |
| Wheels | Yes | Yes |
| Dimensions | 27.3 x 20.6 x 21.9 in | 30.2 x 27.2 x 26.5 in |
| Weight | 213.8 lb | 207 lb |
| Warranty | 2 years | 3 years |
| Released | 2018-11 | 2025-03 |