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 WGen11500TFc are evenly matched, rated 4.3 and 4.3. The Westinghouse WGen11500TFc wins on starting. The Generac GP9500E Tri Fuel costs $330 less ($1,169 vs $1,499).
Westinghouse WGen11500TFc
#6 in LargeFull review
A large tri-fuel generator with cleaner-than-usual power for whole-home backup through a 50 A transfer switch. Best for homeowners with a natural gas line who want to run electronics safely.
Amazon $1,499$1,499
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 Westinghouse WGen11500TFc for 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 WGen11500TFc |
|---|---|---|
| Overall rating | 4.3/5 | 4.3/5 |
| Value 30% | 75 $0.12 per running watt | 70 $0.13 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 | 100 gasoline, propane or natural gas |
| 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 WGen11500TFc | |
|---|---|---|
| Output | ||
| Gasoline | 9,500 W running, 12,500 W starting | 11,500 W running, 14,500 W starting |
| Propane | 8,550 W running, 11,250 W starting | 10,500 W running, 13,500 W starting |
| Natural gas | 7,000 W running, 9,000 W starting | 9,500 W running, 12,000 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 5% |
| Price per watt | $0.12 | $0.13 |
| Fuel and run time | ||
| Fuel | Gasoline, propane, natural gas | Gasoline, propane, natural gas |
| 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 | 550 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 | 27.2 x 26.1 x 26.5 in |
| Weight | 219 lb | 230 lb |
| Warranty | 3 years | 3 years |
| Released | 2025-05 | 2023-11 |