Westinghouse WGen9500DF
#22 in LargeFull review
A large dual-fuel generator for whole-home backup through a 50 A or 30 A transfer switch. Worth it only at a clear discount to the newer CO-sensor models, since it lacks CO shutoff.
Amazon $999$999
3.7/5
A large fuel-injected tri-fuel generator for whole-house backup through a 50 A transfer switch, and one of the few this size that California buyers can get.
- 12,000 / 15,000 WRunning / starting
- Gasoline, propane, natural gasFuel
- 10 hr at 50% loadRun time
- Yes, 240 VTransfer switch
- 237 lbWeight
- $0.29Price / W
Check price at Amazon$3,499
Price checked October 28, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Runs on natural gas from the house line, so it never needs refueling in a long outage
- Two 50 A outlets, so it can feed a 50 A transfer switch and an RV at once
- Fuel injection starts more easily in the cold and needs no carburetor cleaning
- Sold in all 50 states, including California
- Five-year warranty, longer than most rivals
Cons
- Costs far more than carbureted generators of the same output
- No 30 A twist-lock outlet, so a 30 A transfer switch cord needs an adapter
- About 240 lb, so it needs flat ground to wheel around
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 | XP15000HXT+ |
|---|---|
| Output | |
| Gasoline | 12,000 W running, 15,000 W starting |
| Propane | 11,400 W running, 14,250 W starting |
| Natural gas | 10,500 W running, 13,000 W starting |
| Outlets | 4 × 120 V, 14-50 |
| Transfer switch ready | Yes, 240 V |
| Total harmonic distortion | under 5% |
| Price per watt | $0.29 |
| Fuel and run time | |
| Fuel | Gasoline, propane, natural gas |
| Tank | 8.3 gal |
| Run time (gasoline) | 10 hr at 50% load |
| Engine | 500 cc |
| Noise and safety | |
| Rated noise | 74 dBA |
| CO shutoff | Yes |
| CARB compliant | Yes |
| Build | |
| Starting | Remote, electric and recoil |
| Wheels | Yes |
| Dimensions | 29.5 x 28 x 26 in |
| Weight | 237 lb |
| Warranty | 5 years |
| Released | 2025-06 |
Alternatives in this size
Westinghouse WGen20000TFc
#23 in LargeFull review
A huge tri-fuel generator that can back up a large home in full, wired in by an electrician or through two 50 A outlets. For buyers who want standby-generator output without a permanent install.
Amazon $3,899$3,899
Honda EB10000
#25 in LargeFull review
A commercial generator for contractors and rental fleets who run it every day and need it to last. For home backup, consumer tri-fuel models deliver the same power for a fraction of the price.
Amazon $5,999$5,999
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