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 fuel options and run time. The Pulsar PGD40ISCO wins on value. The Pulsar PGD40ISCO costs $299.92 less ($450.07 vs $749.99).
Pulsar PGD40ISCO
#13 in Mid-sizeFull review
A light, inexpensive 4,000 W inverter for RV owners who need to start a rooftop air conditioner without hauling a heavy generator. Expect frequent refueling.
Amazon $450.07$450.07
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) and run time (7 hours on a tank at 25% load vs 5.3 hours on a tank at 25% load (scaled from 50%)).
- Choose the Pulsar PGD40ISCO for value ($0.14 per running watt vs $0.23 per running watt).
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 | Pulsar PGD40ISCO |
|---|---|---|
| Overall rating | 3.9/5 | 3.3/5 |
| Value 30% | 81 $0.23 per running watt | 100 $0.14 per running watt |
| Quiet 20% | 88 52 dBA at light load, maker rating | 44 59 dBA at light load, maker rating |
| Run time 15% | 8 7 hours on a tank at 25% load | 0 5.3 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 | 50 CO shutoff not stated (neutral score used) |
| Warranty 10% | 50 3-year warranty | 50 3-year warranty |
| Starting 5% | 100 electric start with a remote fob or app | 50 starting method not stated (neutral score used) |
Specifications
| Westinghouse iGen4000DFc | Pulsar PGD40ISCO | |
|---|---|---|
| Output | ||
| Gasoline | 3,300 W running, 4,000 W starting | 3,200 W running, 4,000 W starting |
| Propane | 2,970 W running, 3,600 W starting | - |
| Outlets | 2 × 120 V, TT-30 (RV), USB | - |
| Parallel capable | Yes | Yes |
| Total harmonic distortion | under 3% | - |
| Price per watt | $0.23 | $0.14 |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline |
| Tank | 1.7 gal | 1 gal |
| Run time (gasoline) | 7 hr at 25% load | 4 hr at 50% load |
| Run time (propane, 20 lb tank) | 17 hr | - |
| Engine | 141 cc | - |
| Noise and safety | ||
| Rated noise (light load) | 52 dBA | 59 dBA |
| CO shutoff | Yes | - |
| CARB compliant | No | - |
| Build | ||
| Starting | Remote, electric and recoil | - |
| App | No | No |
| Wheels | Yes | - |
| Dimensions | 21.3 x 12.6 x 19.3 in | 18.9 x 11.4 x 17.3 in |
| Weight | 62.8 lb | 47.3 lb |
| Warranty | 3 years | 3 years |