The WGen11500TFc puts out 11,500 W continuously and up to 14,500 W for a few seconds when a motor starts. On propane it's rated at 10,500 W running and 13,500 W starting. On natural gas it's rated at 9,500 W running and 12,000 W starting. It runs up to 19 h on gasoline at 25% load on a full 9.5 gal36 L tank. It weighs 230 lb104.3 kg. Noise is rated at 74 dBA (the source doesn't give the distance or load). It takes 1.26 qt1.2 L of engine oil, and the source recommends SAE 10W-30. The spark plug is F7TC, gap 0.024–0.032 in (0.60–0.80 mm).
Specifications
Units: /| Power | |
|---|---|
| Running output | 11,500 W 1 |
| Starting output | 14,500 W 1Westinghouse calls this peak watts. |
| Running output on propane | 10,500 W 1 |
| Starting output on propane | 13,500 W 1 |
| Running output on natural gas | 9,500 W 1 |
| Starting output on natural gas | 12,000 W 1 |
| Voltage | 120/240 V, 60 Hz 1 |
| Engine | |
| Engine | Westinghouse 4-stroke OHV with cast iron sleeve 2 |
| Displacement | 550 cc 2 |
| Fuel | Unleaded gasoline (87–93 octane), propane or natural gas 1Do not use E15 or E85. Natural gas needs 9.24–10.84 in water column (0.33–0.39 PSI). |
| Starting | Electric, remote and recoil 2 |
| Fuel and run time | |
| Tank | 9.5 gal36 L 1 |
| Run time | 19 h 2on gasoline at 25% loadOn gasoline at 50% load: 9.5 hours. On propane at 50% load: 7 hours (tank size not stated). |
| Size and noise | |
| Weight | 230 lb104.3 kg 2Dry weight. |
| Length × width × height | 27.2 × 26.1 × 26.5 in691 × 663 × 673 mm 2 |
| Noise | 74 dBA 2distance and load not stated |
| Outlets | |
| Outlets | 2 × 120 V GFCI duplex (5-20R) 1 × 120/240 V twist-lock (L14-30R) 1 × 120/240 V (14-50R) 2 × USB |
| Other | |
| CO shutdown | CO sensor with automatic shutdown 2 |
| Warranty | 3 years limited residential, 1 year limited commercial 2 |
Oil, spark plug and service
What to have on the bench before an oil change or tune-up.
| Oil capacity | 1.26 qt1.2 L 1 |
| Oil type | SAE 10W-30 1Don't use full synthetic oil during the break-in. |
| Spark plug | F7TC, gap 0.024–0.032 in (0.60–0.80 mm) 1 |
| Change oil every | After the first 25 hours or first month, then every 50 hours or 6 months 1Every month when running under heavy load or in high temperatures. |
Parts
Search links for common parts. Check the part number against the label on your unit before you buy.
| Part | Find it |
|---|---|
| Air filter | Amazon · eBay |
| Spark plug | Amazon · eBay |
| Engine oil | Amazon · eBay |
| Generator cover | Amazon · eBay |
We may earn a small commission if you buy through these links. It doesn't change what we list. More.
Model numbers
This page covers model number WGen11500TFc. Brands often sell the same name under several numbers with small differences, so check the label on the frame.
Compare
Often compared: Predator 13000 Tri-Fuel, DuroMax XP13000EH, Westinghouse WGen9500DF
Questions people ask
How much oil does the Westinghouse WGen11500TFc take?
1.26 qt1.2 L. Oil type: SAE 10W-30. Oil change: After the first 25 hours or first month, then every 50 hours or 6 months.
What spark plug does the Westinghouse WGen11500TFc use?
F7TC, gap 0.024–0.032 in (0.60–0.80 mm), according to the source. Check the plug in your unit before you buy a replacement.
How long does the Westinghouse WGen11500TFc run on a tank?
19 h. That's on gasoline at 25% load, according to the source. More load means less time.
How much does the Westinghouse WGen11500TFc weigh?
230 lb104.3 kg. Dry weight.
How loud is the Westinghouse WGen11500TFc?
74 dBA. The source doesn't say at what distance or load it was measured, so compare it with care.
What's the difference between 11,500 W and 14,500 W?
11,500 W is what it can supply continuously. 14,500 W is a short burst for the moment a motor (a fridge, a pump, an AC unit) starts up.
Notes
- California (CARB): Westinghouse's product page contradicts itself. Its specification table says "CARB Compliant: No", but the same page tags the model as CARB compliant. We found no CARB Executive Order for this model, so we don't list an emissions certification. Source 2.
Sources
- Westinghouse WGen11500TFc user manual. Owner's manual, accessed November 12, 2026.
- Westinghouse WGen11500TFc product page. Manufacturer, accessed November 12, 2026.
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