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WGen11500DFc Runtime Calculator

Verified Specs ✓

Estimate how long a WGen11500DFc will run based on your power load and available fuel, using Westinghouse's published specifications as the baseline.

Specifications checked against Westinghouse-published information. GeneratorRuntime.com has not tested this generator and is not affiliated with Westinghouse.

How long does a WGen11500DFc run?

Westinghouse publishes:

  • 19 hours at 25% load · gasoline, 9.5 gallons
  • 9.5 hours at 50% load · gasoline, 9.5 gallons
  • 7 hours at 50% load · propane (lp), a 20 lb propane cylinder

Actual runtime varies with load and operating conditions.

Calculate Your Runtime

Choose your generator and we'll use verified published specifications as the starting point. We haven't tested these generators ourselves.

1Your generator

Westinghouse WGen11500DFc (11523)

Verified Specs ✓

The specifications shown were checked against a manufacturer-published source. This does not mean GeneratorRuntime.com tested or endorses this generator, that the manufacturer endorses this site, or that runtime is guaranteed.

Conventional / Dual Fuel · View model runtime guide

  • Gasoline
  • 11,500 running watts
  • 14,500 starting watts
  • 9.5 gallon tank

Published runtime:

  • 19 hr @ 25% load on 9.5 gal
  • 9.5 hr @ 50% load on 9.5 gal

Source: Westinghouse — WGen11500DFc product page (part 11523) View source ↗

Checked 2026-09-28

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2Fuel available

Generator tank capacity: 9.5 gal

gal

Pre-filled with a full tank — change it to what you actually have, including stored cans.

3Expected load
%

Percent of running watts. 50% is a common planning figure.

Runtime17–21 hoursDetails ↓

WGen11500DFc published runtime

  • Gasoline: 19 hours at 25% load on 9.5 gallons; 9.5 hours at 50% load on 9.5 gallons
  • Propane (LP): 7 hours at 50% load on a 20 lb propane tank

From Westinghouse's official product information, checked September 28, 2026.

Verified specifications

Manufacturer
Westinghouse
Model
WGen11500DFc
Model number
11523
Model codes
WGen11500DFc / part / 11523
Generator type
Conventional / Dual Fuel
Gasoline: running
11,500 watts
Gasoline: starting / max
14,500 watts
Gasoline: tank
9.5 gallons
Gasoline: published runtime
19 hours at 25% load on 9.5 gallons
Gasoline: published runtime
9.5 hours at 50% load on 9.5 gallons
Propane (LP): running
10,500 watts
Propane (LP): starting / max
13,500 watts
Propane (LP): published runtime
7 hours at 50% load on a 20 lb propane cylinder
Voltage
120/240V
Engine
Westinghouse 550cc 4-stroke OHV, cast iron sleeve
Displacement
550cc
Dry weight
230 lb
Noise
74 dB(A)
Starting system
Electric, remote, recoil
CO safety
CO sensor with automatic shutdown

Source: Westinghouse — WGen11500DFc product page (part 11523) — View Westinghouse Specifications ↗
Specifications verified: September 28, 2026

Which model this page covers

This page covers the WGen11500DFc dual fuel (part 11523) only — not the tri-fuel WGen11500TFc, which has its own page. Westinghouse lists gasoline and propane output only for the DFc; this page does not assign a natural gas rating.

Manufacturer figures vs. our estimates

Only the runtimes listed above are Westinghouse's own published figures. When your load and fuel amount exactly match one of them, the calculator labels the result Manufacturer Published Runtime. Loads between published figures are labeled Estimated from Manufacturer Data, and loads outside the published range are labeled Extrapolated with a wider range. Those are GeneratorRuntime estimates, not Westinghouse specifications.

Operate it safely

Like every portable generator, the WGen11500DFc must be operated according to the manufacturer's safety instructions: outdoors only, well away from doors, windows, and vents, with battery CO alarms inside your home. A CO shutoff feature is not a substitute for safe placement. Never refuel while the engine is running or hot.

WGen11500DFc FAQ

›How long will a WGen11500DFc run on gasoline?

Westinghouse's published figure: 19 hours at 25% load on 9.5 gallons; 9.5 hours at 50% load on 9.5 gallons.

›How long will a WGen11500DFc run on propane (lp)?

Westinghouse's published figure: 7 hours at 50% load on a 20 lb propane tank.

›Which WGen11500DFc does this page cover?

the WGen11500DFc dual fuel (part 11523) only — not the tri-fuel WGen11500TFc, which has its own page. Westinghouse lists gasoline and propane output only for the DFc; this page does not assign a natural gas rating. Output: gasoline 11,500 watts running / 14,500 watts starting; propane (lp) 10,500 watts running / 13,500 watts starting.

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