Firman T07571 Tri-Fuel 7500W

Firman T07571 Tri-Fuel 7500W is a portable generator from Firman, rated 7,500 running watts with 9,400 starting watts on gasoline (6,750 W on propane), measured at 74 dBA, with 120/240V output.

General
Type	portable
Fuel	gasoline, propane, natural-gas

Power output
Running watts (gas / LP for standby)	7500 W
Starting watts (gas)	9400 W
Running watts (propane)	6750 W
Starting watts (propane)	8450 W
Running watts (natural gas)	5500 W
Starting watts (natural gas)	6900 W

Performance
Noise level	74 dBA
Runtime at 25% load (gas)	12 h
Fuel tank	8 gal

Electrical
Output voltage	120/240V
Transfer-switch-ready outlet	30 A

Features
Start type	electric

Engine
Engine displacement	439 cc

Physical
Weight	213 lb

What the numbers mean

At 7,500 running watts on its best fuel, this unit covers a partial-home setup through a 30 A transfer switch or interlock: refrigerator, furnace, a well or sump pump, and lights, with load management for anything bigger.
Runs on gasoline, propane, natural gas — expect lower output on propane (roughly 10%) and natural gas (roughly 20%) than on gasoline; the spec table shows the published per-fuel ratings.
House hookup: pairs with a 30 A generator inlet ( L14-30) and a transfer switch or interlock installed by an electrician.

Compare the Firman T07571 Tri-Fuel 7500W

Similar generators

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Champion 7500W Dual Fuel with CO Shield (201281) ( 7,500 W running)
Westinghouse WGen7500 ( 7,500 W running)
Westinghouse WGen7500DF ( 7,500 W running)
Predator 9000 (59206) ( 7,250 W running)

Frequently asked questions

What can the Firman T07571 Tri-Fuel 7500W run during an outage?

With 7,500 running watts on its best fuel, the Firman T07571 Tri-Fuel 7500W covers a partial-home setup through a 30 A transfer switch or interlock: refrigerator, furnace, a well or sump pump, and lights, with load management for anything bigger. Add up your actual loads with a sizing worksheet — the bands here are rough guidance, not a load calculation.

What inlet does the Firman T07571 Tri-Fuel 7500W need to power a house?

A 30 A generator inlet (an L14-30 connection) wired to a transfer switch or interlock kit — an electrician's job that normally requires a permit. Never backfeed through a dryer or wall outlet.

Sources

firmanpowerequipment.com (retrieved 2026-07-23)