Westinghouse iGen5000DFc
#1 in Mid-sizeFull review
A mid-size dual-fuel generator that can run a 30 A RV or a house’s essentials all night on one tank. Good for buyers who want long run time and remote start.
Amazon $999$999
The Westinghouse iGen5000DFc is the better inverter generator overall, rated 4.4 to 3.9. The Westinghouse iGen5000DFc leads on run time. The Westinghouse iGen4000DFc costs $249.01 less ($749.99 vs $999).
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
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 iGen5000DFc for run time (18 hours on a tank at 25% load 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 iGen5000DFc | Westinghouse iGen4000DFc |
|---|---|---|
| Overall rating | 4.4/5 | 3.9/5 |
| Value 30% | 73 $0.26 per running watt | 81 $0.23 per running watt |
| Quiet 20% | 88 52 dBA at light load, maker rating | 88 52 dBA at light load, maker rating |
| Run time 15% | 100 18 hours on a tank at 25% load | 8 7 hours on a tank at 25% load |
| Fuel options 10% | 70 gasoline or propane | 70 gasoline or propane |
| CO safety 10% | 100 shuts off when carbon monoxide builds up | 100 shuts off when carbon monoxide builds up |
| Warranty 10% | 50 3-year warranty | 50 3-year warranty |
| Starting 5% | 100 electric start with a remote fob or app | 100 electric start with a remote fob or app |
Specifications
| Westinghouse iGen5000DFc | Westinghouse iGen4000DFc | |
|---|---|---|
| Output | ||
| Gasoline | 3,900 W running, 5,000 W starting | 3,300 W running, 4,000 W starting |
| Propane | 3,500 W running, 4,500 W starting | 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 3% |
| Price per watt | $0.26 | $0.23 |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline, propane |
| Tank | 3.4 gal | 1.7 gal |
| Run time (gasoline) | 18 hr at 25% load | 7 hr at 25% load |
| Run time (propane, 20 lb tank) | 22 hr | 17 hr |
| Engine | 224 cc | 141 cc |
| Noise and safety | ||
| Rated noise (light load) | 52 dBA | 52 dBA |
| CO shutoff | Yes | Yes |
| CARB compliant | No | No |
| Build | ||
| Starting | Remote, electric and recoil | Remote, electric and recoil |
| App | No | No |
| Wheels | Yes | Yes |
| Dimensions | 24.5 x 17.5 x 20 in | 21.3 x 12.6 x 19.3 in |
| Weight | 105.8 lb | 62.8 lb |
| Warranty | 3 years | 3 years |