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
4.3/5
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.
- 11,500 / 14,500 WRunning / starting
- Gasoline, propane, natural gasFuel
- 9.5 hr at 50% loadRun time
- Yes, 240 VTransfer switch
- 230 lbWeight
- $0.13Price / W
Check price at Amazon$1,499
Price checked October 28, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Enough power for most of a house through a transfer switch
- Under 5% THD, clean enough for computers and TVs
- Runs on gasoline, propane or a natural gas line for outages that last days
- Starts with a push button or the included remote key fob
- Shuts itself off if carbon monoxide builds up nearby
Cons
- 230 lb, so it needs flat ground to wheel around
- About 9.5 hours on a tank of gas at half load despite the big tank
- Not CARB compliant, so it cannot be sold in California
The Westinghouse WGen Home Backup family
Every Westinghouse WGen Home Backup model we rank, smallest first. Ratings compare each against its own size.
| Model | Running / starting | Rating | Price |
|---|---|---|---|
| Westinghouse WGen10500DFc | 10,500 / 13,500 W | 4.3/5 | $1,099 |
| Westinghouse WGen10500TFc | 10,500 / 13,500 W | 4.4/5 | $1,249 |
| Westinghouse WGen11500DFc | 11,500 / 14,500 W | 4.3/5 | $1,349 |
| Westinghouse WGen11500TFc (this one) | 11,500 / 14,500 W | 4.3/5 | $1,499 |
How it scores
The rating comes from 7 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | WGen11500TFc (part 11527) |
|---|---|
| Output | |
| Gasoline | 11,500 W running, 14,500 W starting |
| Propane | 10,500 W running, 13,500 W starting |
| Natural gas | 9,500 W running, 12,000 W starting |
| Outlets | 4 × 120 V, L14-30, 14-50, USB |
| Transfer switch ready | Yes, 240 V |
| Full power at 120 V | No |
| Total harmonic distortion | under 5% |
| Price per watt | $0.13 |
| Fuel and run time | |
| Fuel | Gasoline, propane, natural gas |
| Tank | 9.5 gal |
| Run time (gasoline) | 9.5 hr at 50% load |
| Run time (propane, 20 lb tank) | 7 hr |
| Engine | 550 cc |
| Noise and safety | |
| Rated noise | 74 dBA |
| CO shutoff | Yes |
| CARB compliant | No |
| Build | |
| Starting | Remote, electric and recoil |
| Wheels | Yes |
| Dimensions | 27.2 x 26.1 x 26.5 in |
| Weight | 230 lb |
| Warranty | 3 years |
| Released | 2023-11 |
Alternatives in this size
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
DuroMax XP13000HXT
#7 in LargeFull review
A large tri-fuel generator for homes with a natural gas line that want whole-house backup through a 50 A transfer switch without hauling fuel.
Amazon $1,499$1,499
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