Generac 5500 (8150)
A gas portable generator rated at 5,500 running and 6,875 starting watts, with a 5.4-gallon tank and up to 10.5 hours of runtime at half load. It shuts itself off if carbon monoxide builds up.
- Running watts
- 5,500 W
- Starting / surge watts
- 6,875 W
- Fuel
- gasoline
- Best for
- Home backup for essentials like a fridge, sump pump and freezer, plus jobsite tools.
- Not for
- Quiet campgrounds and RV parks, since it is an open-frame, non-inverter design. Carrying by hand: it weighs 172 lb.
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Specifications
| Running watts | 5,500 W |
|---|---|
| Starting / surge watts | 6,875 W |
| Fuel | gasoline |
| Inverter (clean power) | No |
| Runtime at 50% load | 10.5 h |
|---|---|
| Fuel tank | 5.4 gal |
| Weight | 172 lb |
|---|---|
| Length | 30 in |
| Width | 27 in |
| Height | 25 in |
| CO safety shutoff | Yes |
|---|---|
| CARB compliant | Yes |
Checked 29 October 2026. Sources: generac.com.