FIRMAN WH03242 4000W Dual Fuel Inverter
A dual-fuel inverter generator rated at 3,200 running and 4,000 starting watts, with a 1.8-gallon tank and up to 9 hours of runtime at 25% load. It has an RV-ready TT-30R outlet. FIRMAN rates it at 58 dB(A).
- Running watts
- 3,200 W
- Starting / surge watts
- 4,000 W
- Fuel
- gasoline, propane
- Best for
- RV trips and home backup for a fridge, lights and electronics, with clean power.
- Not for
- Whole-home backup or 240V appliances.
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Specifications
| Running watts | 3,200 W |
|---|---|
| Starting / surge watts | 4,000 W |
| Fuel | gasoline, propane |
| Inverter (clean power) | Yes |
| Runtime at 25% load | 9 h |
|---|---|
| Fuel tank | 1.8 gal |
| Outlets | 120V TT-30R (RV), 120V 5-20R |
|---|
| Noise | 58 dB(A) |
|---|---|
| Weight | 90 lb |
| Standard warranty | 3 years |
|---|
Checked 29 October 2026. Sources: firmanpowerequipment.com.