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
3.6/5
A mid-size gasoline generator with fuel injection for buyers who want an easy start after months in storage, and the pick for California. Others get more watts per dollar.
- 5,500 / 6,875 WRunning / starting
- GasolineFuel
- 10.5 hr at 50% loadRun time
- Yes, 240 VTransfer switch
- 163 lbWeight
- $0.20Price / W
Check price at Amazon$1,099
Price checked October 28, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Fuel injection starts easily and needs no carburetor cleaning after storage
- Sold in all 50 states, including California
- Push-button start with the battery included
- L14-30R outlet connects to a 240 V transfer switch
- Shuts itself off if carbon monoxide builds up nearby
Cons
- Costs about twice as much per watt as Generac’s carbureted models
- Gasoline only
- At about 165 lb it needs two people to lift
How it scores
The rating comes from 7 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | GP5500E 50ST (model 8150, G0081500) |
|---|---|
| Output | |
| Gasoline | 5,500 W running, 6,875 W starting |
| Outlets | 4 × 120 V, L14-30 |
| Transfer switch ready | Yes, 240 V |
| Full power at 120 V | No |
| Price per watt | $0.20 |
| Fuel and run time | |
| Fuel | Gasoline |
| Tank | 5.4 gal |
| Run time (gasoline) | 10.5 hr at 50% load |
| Engine | 298 cc |
| Noise and safety | |
| CO shutoff | Yes |
| CARB compliant | Yes |
| Build | |
| Starting | Electric and recoil |
| Wheels | Yes |
| Dimensions | 27 x 27 x 25 in |
| Weight | 163 lb |
| Warranty | 3 years |
| Released | 2025-08 |
Alternatives in this size
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
Honda EB6500
#14 in Mid-sizeFull review
A contractor-grade generator for daily job-site use where durability and OSHA compliance matter more than price. Home backup buyers get far more watts per dollar elsewhere.
Amazon $2,999$2,999
Compare
Compare the Generac GP5500E EFI with any other portable generator →
More from Generac: every Generac product ranked.