Westinghouse iGen4000DFc
#3 in Mid-sizeFull review
A compact dual-fuel generator for travel trailers and essential home circuits, with remote start and CO shutoff. Its small tank is the main trade-off.
Amazon $749.99$749.99
The Westinghouse iGen4000DFc is the better inverter generator overall, rated 3.9 to 3.3. The Westinghouse iGen4000DFc leads on CO safety, fuel options and warranty. The WEN 56380i wins on run time. The WEN 56380i costs $50 less ($699.99 vs $749.99).
WEN 56380i
#14 in Mid-sizeFull review
An RV-ready mid-size inverter with electric start at a modest price. It lacks CO shutoff, which newer models include.
Amazon $699.99$699.99
Prices were last checked October 22, 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 Westinghouse iGen4000DFc for CO safety (shuts off when carbon monoxide builds up vs no CO shutoff), fuel options (gasoline or propane vs gasoline only) and warranty (3-year warranty vs 2-year warranty).
- Choose the WEN 56380i for run time (11.2 hours on a tank at 25% load (scaled from 50%) vs 7 hours on a tank at 25% load).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every mid-size inverter generator; a clear win is highlighted. How we rank explains each one.
| Factor weight | Westinghouse iGen4000DFc | WEN 56380i |
|---|---|---|
| Overall rating | 3.9/5 | 3.3/5 |
| Value 30% | 81 $0.23 per running watt | 86 $0.21 per running watt |
| Quiet 20% | 88 52 dBA at light load, maker rating | 56 57 dBA at light load, maker rating |
| Run time 15% | 8 7 hours on a tank at 25% load | 43 11.2 hours on a tank at 25% load (scaled from 50%) |
| Fuel options 10% | 70 gasoline or propane | 0 gasoline only |
| CO safety 10% | 100 shuts off when carbon monoxide builds up | 0 no CO shutoff |
| Warranty 10% | 50 3-year warranty | 25 2-year warranty |
| Starting 5% | 100 electric start with a remote fob or app | 80 push-button electric start |
Specifications
| Westinghouse iGen4000DFc | WEN 56380i | |
|---|---|---|
| Output | ||
| Gasoline | 3,300 W running, 4,000 W starting | 3,400 W running, 3,800 W starting |
| Propane | 2,970 W running, 3,600 W starting | - |
| Outlets | 2 × 120 V, TT-30 (RV), USB | 2 × 120 V, TT-30 (RV), USB |
| Parallel capable | Yes | Yes |
| Total harmonic distortion | under 3% | under 1.2% |
| Price per watt | $0.23 | $0.21 |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline |
| Tank | 1.7 gal | 2.2 gal |
| Run time (gasoline) | 7 hr at 25% load | 8.5 hr at 50% load |
| Run time (propane, 20 lb tank) | 17 hr | - |
| Engine | 141 cc | 212 cc |
| Noise and safety | ||
| Rated noise (light load) | 52 dBA | 57 dBA |
| CO shutoff | Yes | No |
| CARB compliant | No | - |
| Build | ||
| Starting | Remote, electric and recoil | Electric and recoil |
| App | No | No |
| Wheels | Yes | Yes |
| Dimensions | 21.3 x 12.6 x 19.3 in | 23.2 x 18 x 20.1 in |
| Weight | 62.8 lb | 99.2 lb |
| Warranty | 3 years | 2 years |