Answer

Can the DuroMax XP13000EH run Lasko 755320 ceramic heater, high?

Runs

Runs. Running draw 1,500 W fits within 10,500 running watts, and published startup 1,500 W fits within 13,000 starting watts.

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The comparison

DuroMax XP13000EHLasko 755320 ceramic heater, high
Running watts10,500 W1,500 W
Starting / surge watts13,000 W1,500 W
Typeopen-frame, Dual fuel (gasoline/propane)Heat
Published runtime8.5 hr at 50% load on gasoline, 6.5 hr at 50% on propane
SourcesGenerator sourceAppliance source

Questions

Can the DuroMax XP13000EH run Lasko 755320 ceramic heater, high?

Runs. Running draw 1,500 W fits within 10,500 running watts, and published startup 1,500 W fits within 13,000 starting watts.

What watts were compared?

Generator: 10,500 running W and 13,000 starting W on gasoline. Appliance: 1,500 W running, 1,500 W startup.

How long will it run?

Fuel runtime depends on total load. Published runtime: 8.5 hr at 50% load on gasoline, 6.5 hr at 50% on propane.

Where did the numbers come from?

DuroMax spec sheet: gasoline 13000 starting / 10500 running; propane 12350 / 9975; 120/240V 30A twist-lock and 14-50R; 8.5 hr gas / 6.5 hr propane at 50%. Lasko lists 120 V, current 7.5 A to 12.5 A, and energy output 900 W to 1,500 W. High is 1,500 W. A resistive element does not have a separate motor surge, so surge is set equal to the high setting. The thermostat cycles in real rooms; this entry assumes the high element is on.

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