GENMAX · Portable generator

GM15000ET

Gasoline + Propane + Natural gas portable generator with 15,000 peak watts

11,000W running15,000W peakSee manufacturer pageGasoline + Propane + Natural gas

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GENMAX GM15000ET 15000Watt Tri-Fuel Portable Generator - 2025 Model with ATS, CO Sensor — Official product image: GENMAX

Visual spec gallery

The deciding numbers, made scannable.

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01 · Maximum output

15,000W peak

Continuous output11,000W running

Size around running load first, then confirm the peak rating covers the largest startup surge.

02 · Fuel output

Gasoline + Propane + Natural gas

Gasoline

11,000W run · 15,000W peak

Alternative-fuel ratings are shown only when GENMAX publishes a fuel-specific figure.

03 · Portability

See manufacturer page

Unit weight

See manufacturer page

Dimensions

Sound rating

See manufacturer page

04 · Controls & ownership

Starting

Remote / Electric / Recoil

CO shutoff

Manufacturer-listed

Parallel

Not listed

Warranty

See manufacturer warranty

Official product gallery

Every manufacturer view in one place.

GENMAX imagery can include the enclosure, control panel, outlets, dimensions, feature callouts, and included accessories.

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Complete specifications

Manufacturer data, organized for comparison.

Power ratings, features, imagery, manuals, and seller links come from GENMAX’s current U.S. model page. A missing figure is labeled instead of estimated.

Never run a portable generator indoors. Keep it at least 20 feet from occupied buildings with exhaust directed away from doors, windows, and vents. Use a qualified electrician and approved transfer equipment for home connections.

Model overview

11,000 running watts and 15,000 peak watts for home backup and rv power. Confirm exact configuration and included accessories with the seller before purchase.

Fuel-specific output

Gasoline: 11,000W running / 15,000W peak

Operation & ownership

Engine: See manufacturer page
Voltage / frequency: See manufacturer page / 60 Hz
Runtime: See manufacturer page
Fuel capacity: See manufacturer page
Sound: See manufacturer page
Starting methods: Remote / Electric / Recoil
Unit size / weight: See manufacturer page / See manufacturer page
Warranty: See manufacturer warranty

Connections

See manufacturer page

Manufacturer feature details

【High Output Engine, 10.56 gal Fuel Tank】:The GM15000ET Rated running power of 11000W and a peak power of 15000W make it ready to respond to various power demands. The GM15000ET comes with a capacious 10.56 gal fuel tank, ensuring uninterrupted power for all your regular household electrical requirements. Featuring ∮32 frame tubes, the GM15000ET not only exudes a sense of grandeur but also guarantees long - term durability. Its robust construction can endure various usage conditions, making it a reliable companion for years to come.

【Tri - Fuel Capability, Effortless Start - Up】 Adaptable to diverse settings and user inclinations, the GM15000ET is engineered with tri - fuel compatibility, enabling seamless transitions between gasoline, LPG, and natural gas. This flexibility ensures reliable power sources for various scenarios. Moreover, it offers a trifecta of start - up options: one - button start for instant ignition, remote start for added convenience, and recoil - start as a reliable backup. This comprehensive start - up system guarantees swift power activation, regardless of the circumstances. With such simplified operation, users can effortlessly take charge of their power needs.

Current seller links

Compare offers from GENMAX-listed retailers.

These destinations are supplied on the official model page. Prices and availability can change.

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Best-fit uses

Home backup
RV power
Jobsite tools
High-demand loads

Standout features

11,000 running / 15,000 peak watts
Gasoline + Propane + Natural gas
Remote start
CO shutdown system

Compare it with your actual load.

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Official sources:Model page All GENMAX generatorsVerified September 15, 2026