Champion 3650-Watt Dual Fuel
#3 in SmallFull review
A small dual-fuel generator for a 30 A RV or a few essentials in an outage, for buyers who want electric start, propane and CO shutoff at a low price.
Amazon $599.99$599.99
The Champion 3650-Watt Dual Fuel is the better portable generator overall, rated 4.1 to 4.0. The Champion 3650-Watt Dual Fuel leads on run time and starting. The Westinghouse WGen3600DFcv wins on value. The Westinghouse WGen3600DFcv costs $200.99 less ($399 vs $599.99).
Westinghouse WGen3600DFcv
#6 in SmallFull review
A small dual-fuel generator for an RV or a fridge, lights and a sump pump in an outage. Good for buyers who want to store propane instead of gasoline.
Amazon $399$399
Prices were last checked October 28, 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 Champion 3650-Watt Dual Fuel for run time (14 hours on a tank at 50% load vs 10.5 hours on a tank at 50% load) and starting (push-button electric start vs pull start only).
- Choose the Westinghouse WGen3600DFcv for value ($0.11 per running watt vs $0.16 per running watt).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every small portable generator; a clear win is highlighted. How we rank explains each one.
| Factor weight | Champion 3650-Watt Dual Fuel | Westinghouse WGen3600DFcv |
|---|---|---|
| Overall rating | 4.1/5 | 4.0/5 |
| Value 30% | 74 $0.16 per running watt | 96 $0.11 per running watt |
| Run time 15% | 100 14 hours on a tank at 50% load | 65 10.5 hours on a tank at 50% load |
| Fuel options 15% | 70 gasoline or propane | 70 gasoline or propane |
| Home hookup 15% | 40 120 V 30 A outlet only (no 240 V) | 40 120 V 30 A outlet only (no 240 V) |
| CO safety 10% | 100 shuts off when carbon monoxide builds up | 100 shuts off when carbon monoxide builds up |
| Warranty 10% | 67 3-year warranty | 67 3-year warranty |
| Starting 5% | 80 push-button electric start | 0 pull start only |
Specifications
| Champion 3650-Watt Dual Fuel | Westinghouse WGen3600DFcv | |
|---|---|---|
| Output | ||
| Gasoline | 3,650 W running, 4,550 W starting | 3,600 W running, 4,650 W starting |
| Propane | 3,285 W running, 4,100 W starting | 3,240 W running, 4,180 W starting |
| Outlets | 2 × 120 V, TT-30 (RV), L5-30 | 2 × 120 V, TT-30 (RV), L5-30 |
| Transfer switch ready | 120 V only (L5-30) | 120 V only (L5-30) |
| Full power at 120 V | No | - |
| Total harmonic distortion | - | under 23% |
| Price per watt | $0.16 | $0.11 |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline, propane |
| Tank | 4.7 gal | 4 gal |
| Run time (gasoline) | 14 hr at 50% load | 10.5 hr at 50% load |
| Run time (propane, 20 lb tank) | 10.5 hr | 14 hr |
| Engine | 224 cc | 212 cc |
| Noise and safety | ||
| Rated noise | 68 dBA | 68 dBA |
| CO shutoff | Yes | Yes |
| CARB compliant | No | No |
| Build | ||
| Starting | Electric and recoil | Recoil (pull) |
| Wheels | Yes | No |
| Dimensions | 24.7 x 25 x 22.2 in | 23.5 x 18.5 x 18.9 in |
| Weight | 127 lb | 104.7 lb |
| Warranty | 3 years | 3 years |
| Released | 2024-12 | 2022-05 |