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 3.6. The Westinghouse iGen4000DFc leads on fuel options, starting and value. The Ryobi RYi4022X wins on run time. The Westinghouse iGen4000DFc costs $139.01 less ($749.99 vs $889).
Ryobi RYi4022X
#8 in Mid-sizeFull review
A simple open-frame inverter for RVs and outage backup with certified low-CO safety. Enclosed rivals are quieter for similar money.
Ryobi $889$889
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 fuel options (gasoline or propane vs gasoline only), starting (electric start with a remote fob or app vs pull start only) and value ($0.23 per running watt vs $0.26 per running watt).
- Choose the Ryobi RYi4022X for run time (15.8 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 | Ryobi RYi4022X |
|---|---|---|
| Overall rating | 3.9/5 | 3.6/5 |
| Value 30% | 81 $0.23 per running watt | 72 $0.26 per running watt |
| Quiet 20% | 88 52 dBA at light load, maker rating | 50 noise level not published (neutral score used) |
| Run time 15% | 8 7 hours on a tank at 25% load | 82 15.8 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 | 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 | 0 pull start only |
Specifications
| Westinghouse iGen4000DFc | Ryobi RYi4022X | |
|---|---|---|
| Output | ||
| Gasoline | 3,300 W running, 4,000 W starting | 3,400 W running, 4,000 W starting |
| Propane | 2,970 W running, 3,600 W starting | - |
| Outlets | 2 × 120 V, TT-30 (RV), USB | 4 × 120 V, TT-30 (RV) |
| Parallel capable | Yes | - |
| Total harmonic distortion | under 3% | - |
| Price per watt | $0.23 | $0.26 |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline |
| Tank | 1.7 gal | 3.2 gal |
| Run time (gasoline) | 7 hr at 25% load | 12 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 | - |
| CO shutoff | Yes | Yes |
| CARB compliant | No | - |
| Build | ||
| Starting | Remote, electric and recoil | Recoil (pull) |
| App | No | - |
| Wheels | Yes | Yes |
| Dimensions | 21.3 x 12.6 x 19.3 in | - |
| Weight | 62.8 lb | 85 lb |
| Warranty | 3 years | 3 years |