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DuroMax XP12000EH Runtime Calculator

Verified Specs ✓

Estimate how long a DuroMax XP12000EH will run based on your power load and available fuel, using DuroMax's published specifications as the baseline.

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

How long does a DuroMax XP12000EH run?

DuroMax publishes:

  • 19 hours at 25% load · gasoline, 8.3 gallons
  • 8 hours at 50% load · gasoline, 8.3 gallons
  • 14 hours at 25% load · propane (lp), propane amount not stated
  • 7 hours at 50% load · propane (lp), propane amount not stated

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

DuroMax XP12000EH

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
  • 9,500 running watts
  • 12,000 starting watts
  • 8.3 gallon tank

Published runtime:

  • 19 hr @ 25% load on 8.3 gal
  • 8 hr @ 50% load on 8.3 gal

Source: DuroMax Power Equipment — current XP12000EH product page View source ↗

Checked 2026-09-28

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2Fuel available

Generator tank capacity: 8.3 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 ↓

DuroMax XP12000EH published runtime

  • Gasoline: 19 hours at 25% load and 8 hours at 50% load on 8.3 gallons
  • Propane: 14 hours at 25% load and 7 hours at 50% load (propane quantity not stated)

Runtimes are from DuroMax's current XP12000EH product page, checked September 28, 2026. DuroMax's owner's manual (revised June 27, 2022) matches the wattage, tank size and weight, and does not list runtimes.

Verified specifications

Manufacturer
DuroMax
Model
XP12000EH
Generator type
Conventional / Dual Fuel
Gasoline: running
9,500 watts
Gasoline: starting / max
12,000 watts
Gasoline: tank
8.3 gallons
Gasoline: published runtime
19 hours at 25% load on 8.3 gallons
Gasoline: published runtime
8 hours at 50% load on 8.3 gallons
Propane (LP): running
9,025 watts
Propane (LP): starting / max
11,400 watts
Propane (LP): published runtime
14 hours at 25% load on propane amount not stated
Propane (LP): published runtime
7 hours at 50% load on propane amount not stated
Engine
DuroMax 457cc OHV
Displacement
457cc
Dry weight
224 lb
Weight
238 lb
Noise
74 dB(A)
CO safety
CO sensor shutdown

Source: DuroMax Power Equipment — current XP12000EH product page — View DuroMax Specifications ↗
Specifications verified: September 28, 2026

How much gas does the XP12000EH use?

  • At 25% load: 8.3 gal ÷ 19 h ≈ 0.44 gallons per hour
  • At 50% load: 8.3 gal ÷ 8 h ≈ 1.04 gallons per hour

These are our calculations from DuroMax's published figures, not DuroMax figures.

Manufacturer figures vs. our estimates

Only the runtimes listed above are DuroMax'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 DuroMax specifications.

Operate it safely

Like every portable generator, the DuroMax XP12000EH 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.

DuroMax XP12000EH FAQ

›How long will a DuroMax XP12000EH run on gasoline?

DuroMax lists 19 hours at 25% load and 8 hours at 50% load on the 8.3-gallon tank.

›How long will a DuroMax XP12000EH run on propane?

DuroMax lists 14 hours at 25% load and 7 hours at 50% load, but does not state the propane quantity, so the calculator does not scale these to other tank sizes.

›How many watts does the DuroMax XP12000EH produce?

Gasoline: 9,500 watts running / 12,000 watts peak. Propane: 9,025 watts running / 11,400 watts peak.

›Is this the same as the XP12000DX or XP13000EH?

No. This page covers only the DuroMax XP12000EH. The XP12000DX and XP13000EH publish different figures.

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