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GENMAX

GENMAX 15000W Tri-Fuel Portable Generator - 2025 Model with ATS, CO Sensor, Digital Display & 50A Output Perfect for Home Backup, Construction Sites & Emergency Power

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Sep 25
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Style: GM15000ET


Features

  • 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.
  • Intelligent Control Panel,2-wire StartThe control panel is multifunctional,integrating cutting-edge technology with a user-centric design. A DC cigarette lighter outlet caters to the charging requirements of batteries.The multifunctional digital display presents real - time operational data,Easy to monitor.Equipped with a battery charging port and a 2 - wire automatic start/stop mechanism for charging solar batteries,it's a boon for solar - powered setups.The built-in CO detection function prioritizes user safety.The voltage transfer switch enables seamless switching between 120V and 240V,with the ability to output full power at 120V,providing intelligent solutions for complex power demand
  • LED Flexible Rope Light Exceptionally bright, yet generating minimal heat and boasting remarkable energy - efficiency, our LED flexible rope light is a game - changer. At night, it illuminates the panel with clarity, enhancing visibility of the panel functions. This not only facilitates smooth operation but also ensures safety during low - light conditions.Even when the generator is not started and the main switch is turned on, the LED Flexible Rope Light can remain lit for 30 seconds, providing just - in - time illumination for quick checks or operations.
  • GENMAX SupportIncludes 3-year warranty with FREE lifetime technical support from experts.

Description

Genmax is always striving to be a pioneer in the next generation of reliable and professional power solution experts. We know what we're doing, we're good at it. We have the experience, the skills, and the vision to power every corner of life, to make energy use more efficient, and much smarter.

Brand: GENMAX


Wattage: 11000 watts


Fuel Type: Tri Fuel


Power Source: Fuel Powered


Recommended Uses For Product: Camping


Item Weight: 242.5 pounds


Output Wattage: 11000


Special Feature: 2-Wire Auto GEN Start function, CO Sensor, Magnetic dipstick, Tri-Fuel


Included Components: Automatic START/STOP Cable (1) NG Hose (1) LPG Hose (1), Dual-Purpose Screwdriver (1) Oil Funnel (1), NEMA L14-30P Bonding Plug (1) NG Quick Connector (1), Remote Control Key (1) NG Air Intake Connector (1), Spark Plug Socket Wrench (1) Wrench (2) Rain Cover (1) See more


Product Dimensions: 31.57"L x 27.95"W x 28.66"H


Wattage: 11000 watts


Fuel Type: Tri Fuel


Power Source: Fuel Powered


Recommended Uses For Product: Camping


Output Wattage: 11000


Additional Features: 2-Wire Auto GEN Start function, CO Sensor, Magnetic dipstick, Tri-Fuel


Engine Type: 4 Stroke


Ignition System Type: Electric start


Tank Volume: 10.56 imperial gallons


Total Power Outlets: 2


Starting Wattage: 15000 watts


Running Wattage: 11000 watts


Frequency: 50 hertz


Runtime: 105 hours


Item Weight: 242.5 pounds


Item Dimensions L x W x H: 31.57"L x 27.95"W x 28.66"H


Brand Name: GENMAX


Included Components: Automatic START/STOP Cable (1) NG Hose (1) LPG Hose (1), Dual-Purpose Screwdriver (1) Oil Funnel (1), NEMA L14-30P Bonding Plug (1) NG Quick Connector (1), Remote Control Key (1) NG Air Intake Connector (1), Spark Plug Socket Wrench (1) Wrench (2) Rain Cover (1)


Model Name: GM15000ET


Model Number: GM15000ET


Number of Items: 1


UPC: 760790901382


Unit Count: 1 Count


Manufacturer: GENMAX


Manufacturer Part Number: GM15000ET


Warranty Description: 3 year


Material Type: Steel/Cast Iron


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Sep 25

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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Top Amazon Reviews

    • I haven't seen any reviews of this size generator so here it is : The Genmax GM15000ET
Style: GM15000ET
Review Image by rather not say
Review Image by rather not say
Review Image by rather not say
Review Image by rather not say
Review Image by rather not say
Review Image by rather not say
Review Image by rather not say
Review Image by rather not say
Review Image by rather not say
Review Image by rather not say
I probably did not need this much power other than to start my large air compressor or to use while welding with a Miller 252 welder but this unit had some features I was looking for. I did a lot or research to come up with this unit. An inverter generator is a nice item to have to power smaller loads but to power large inrush items you need a good surge generator as to why I went this route. I notices the Harbor Freight model on sale, a 13000w on sale for a little over a grand and in review the sign wave became trashy after 7500w so that was off the burner. Started looking over many units to find even champion was made in china. Yes most all portable gens are made over seas or put together here with china parts. This gen came with remote key fob /electric start / pull start / and 2-wire start control. A very use full way with solar inverters or other equipment. This tri-fuel unit give many options. Came with all the hoses/charged sealed batter/wheel kit/ grab handles/ tools /oil/ charger and more than you would expect. Amazon was quick to get it to me. The frame is larger than most being 1 1/4 inch thick. The rails above the tank are welded on instead of bolted like some of the other models. I could not find a scratch on mine. Ever thing about it well built and thought out. Even the wire harness going to the control panel was taped or rubber covered to keep water out and protect the wires. I like the style of the read out being easy to see with the lighting as well as the night time led lighting above the display of controls. I added the oil, hooked on my grill propane tank and it started right up on the first try, impressed.. I hope this unit lasts a long time. For thous interested in knowing, when you down load the manual, the web site has a statement. Starting this year, any one who buys a Genmax will now receiver a 3 year warranty. This started Jan. 01, 2026 for any one buying on this date and after. Glad I waited till this year to buy one. Here is some pictures of my unit. Looking at some of the pics, you can see they provided a cover for the unit, who does that? the handles have rubber inserts to grab and keep the handles from scratching the frame as well in aid for good grip when moving. Has a nice muffler and when it was running I was amassed it really was not as loud as I thought it would be being a large 520cc engine. I'm hoping for the best but just to say it looks like a nice unit to have. this one has the 50 amp RV plug which I need for the welder, so I'm all set with that. I will be able to use the 2 wire start to hook to my solar inverter or to add another way to start automatically from another location. ... show more
Reviewed in the United States on January 31, 2026 by rather not say
    • TheCO sensor makes this generator useless.
Style: GM15000ET
Review Image by Duane Jones
I bought this generator to provide backup power for my off-grid solar system. I understand the concept behind carbon monoxide sensors for safety but to put one on a generator and not be able to turn it off is ridiculous. An automatic start generator that is kept in a generator shed should have a way to turn off the sensor. I've been trying for three days to get this thing to run more than 10 minutes. I spent a full day with genmax customer service trying to find a way to bypass the CO sensor and still nothing. They sent me a picture of a wire harness with a black wire and a white wire that are supposed to be cut and connected together. There aren't any white wires in the wire harness. This thing is basically useless. If there's anyone out there that knows how to bypass the CO sensor on theGenmax GM15000ET I would sure appreciate it. I did eventually figure out how to bypass the CO sensor. If you connect the two solid black wires together it will work. ... show more
Reviewed in the United States on April 19, 2026 by Duane Jones
    • Nice Generator
Style: GM15000ET
This size will operate your whole house (mine is 1600 sq ft) It runs you air or furnace, and all other things at the same time. I had mine wired into my box and the plug is outside
Reviewed in the United States on July 22, 2026 by Sparky
    • No Start / No Run Issue
Style: GM15000ET
Wire not plugged in causing unit to crank but not start. Basically had to disable and diagnose the issue on my own or haul it an hour away to repair location. Received nothing back for my time, inconvenience or expense to repair the faulty equipment.
Reviewed in the United States on August 3, 2026 by MrJeepster
    • Very good deal!
Style: GM15000ET
Very good deal. Has worked perfectly for us so far.
Reviewed in the United States on March 21, 2026 by DD
    • Be careful buying generators from Amazon. Sent me defective one and no replacement or return
Style: GM15000ET
Piece of garbage. Sent totally useless generator. Spent $200 to invite electrician to figure out that neutral and ground not bonded at 50 amp socket. Now Amazon doesn’t want to return it or replace it. Total scam.
Reviewed in the United States on May 12, 2026 by Beehive Trucking Co LLC
    • Perfecto
Style: GM15000ET
Review Image by Johan miranda
Perfect 👌
Reviewed in the United States on November 25, 2025 by Johan miranda
    • Works Well for Jobsite Use
Style: GM15000ET
I mainly run this generator on gasoline when I need maximum power. It has no problem starting heavy equipment like air compressors and large power tools. Startup is quick, and the output feels strong and stable. This is a great option if you need full power for jobsite or emergency use.
Reviewed in the United States on January 17, 2026 by Robin Bartholomew

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