Generac GP9500E Tri Fuel
#4 in LargeFull review
A large tri-fuel generator for whole-home backup through a transfer switch, best for homes with a natural gas line. It is one of the cheapest ways to get 9,500 W and three fuels.
Amazon $1,169$1,169
The Generac GP9500E Tri Fuel and the Westinghouse WGen10500DFc are evenly matched, rated 4.3 and 4.3. The Generac GP9500E Tri Fuel leads on fuel options. The Westinghouse WGen10500DFc wins on value and starting. The Westinghouse WGen10500DFc costs $70 less ($1,099 vs $1,169).
Westinghouse WGen10500DFc
#5 in LargeFull review
A large dual-fuel generator for whole-home backup through a 50 A transfer switch, with remote start and CO shutoff. Good value per watt for homeowners who can do without natural gas.
Amazon $1,099$1,099
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 Generac GP9500E Tri Fuel for fuel options (gasoline, propane or natural gas vs gasoline or propane).
- Choose the Westinghouse WGen10500DFc for value ($0.10 per running watt vs $0.12 per running watt) and starting (electric start with a remote fob or app vs push-button electric start).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every large portable generator; a clear win is highlighted. How we rank explains each one.
| Factor weight | Generac GP9500E Tri Fuel | Westinghouse WGen10500DFc |
|---|---|---|
| Overall rating | 4.3/5 | 4.3/5 |
| Value 30% | 75 $0.12 per running watt | 85 $0.10 per running watt |
| Run time 15% | 55 9.5 hours on a tank at 50% load | 55 9.5 hours on a tank at 50% load |
| Fuel options 15% | 100 gasoline, propane or natural gas | 70 gasoline or propane |
| Home hookup 15% | 100 240 V outlet for a transfer switch | 100 240 V outlet for a transfer switch |
| 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 | 100 electric start with a remote fob or app |
Specifications
| Generac GP9500E Tri Fuel | Westinghouse WGen10500DFc | |
|---|---|---|
| Output | ||
| Gasoline | 9,500 W running, 12,500 W starting | 10,500 W running, 13,500 W starting |
| Propane | 8,550 W running, 11,250 W starting | 9,500 W running, 12,500 W starting |
| Natural gas | 7,000 W running, 9,000 W starting | - |
| Outlets | 2 × 120 V, L14-30, 14-50 | 4 × 120 V, L14-30, 14-50, USB |
| Transfer switch ready | Yes, 240 V | Yes, 240 V |
| Full power at 120 V | No | No |
| Total harmonic distortion | - | under 23% |
| Price per watt | $0.12 | $0.10 |
| Fuel and run time | ||
| Fuel | Gasoline, propane, natural gas | Gasoline, propane |
| Tank | 7.5 gal | 9.5 gal |
| Run time (gasoline) | 9.5 hr at 50% load | 9.5 hr at 50% load |
| Run time (propane, 20 lb tank) | 4.5 hr | 7 hr |
| Engine | 500 cc | 500 cc |
| Noise and safety | ||
| Rated noise | - | 74 dBA |
| CO shutoff | Yes | Yes |
| CARB compliant | No | No |
| Build | ||
| Starting | Electric and recoil | Remote, electric and recoil |
| Wheels | Yes | Yes |
| Dimensions | 27.5 x 27.1 x 27.6 in | 28.6 x 29.3 x 26.8 in |
| Weight | 219 lb | 230 lb |
| Warranty | 3 years | 3 years |
| Released | 2025-05 | 2025-03 |