GENMAX GM17000iETC 17,000W Tri-Fuel Inverter Generator

Tri-Fuel Power for Grid-Independent Backup

Three fuels, one machine — Gasoline, propane, or natural gas — choose what's available
Clean power for everything — Under 3% THD protects sensitive electronics and medical devices
50A for whole-home backup — Run well pumps, HVAC, and appliances simultaneously
Auto-start integration ready — 2-wire system connects to external controllers for hands-free operation
CO sensor shutdown built in — Automatic shutoff detects carbon monoxide for safe operation
  • FREE System Design Consultation -- Our engineers size your setup for your actual consumption — no guesswork
  • FREE Shipping -- Ships free via LTL freight — no surprise charges, no minimums

$4,299.95

Out of stock

In the box

  • GENMAX GM17000iETC Generator Unit
  • Battery Charging Adapter
  • Owner's Manual
GENMAX GM17000iETC 17000 Watt Tri-Fuel Inverter Generator
GENMAX GM17000iETC 17,000W Tri-Fuel Inverter Generator
$4,299.95

Tri-Fuel Power for Grid-Independent Backup

The GENMAX GM17000iETC delivers 17,000 starting watts and 13,500 running watts on gasoline, with flexible tri-fuel operation across propane and natural gas. Its inverter system produces clean power with ≤3% THD, safe for sensitive electronics, medical devices, and solar-rated inverter-chargers. A commercial-grade V-Twin engine and covered outlets make this unit field-tested for demanding off-grid installations. The digital control center tracks voltage, load, and runtime in real time, while CO detection, low-oil shutoff, and thermal protection keep your grid-independent system running safely through extended outages.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
Tri-Fuel Operation
≤3% THD Clean Power
Auto Start/Stop Ready
CO Safety Shutoff
17,000W
Peak Starting Watts
13,500W
Running Watts (Gas)
334.4 lb
Unit Weight
Grid-independent backup that actually works when the grid goes down

Grid-independent backup that actually works when the grid goes down

Grid-tied solar systems go dark the moment the utility fails — that defeats the entire purpose of backup power. The GENMAX GM17000iETC cuts that dependency completely. With 13,500 running watts on gasoline and tri-fuel flexibility across propane and natural gas, this generator delivers real power regardless of grid status. At Off Grid Vault, we only carry equipment we would trust on our own homesteads. This unit is field-tested for the loads that matter: well pumps, refrigerators, HVAC systems, and medical devices — all running simultaneously through the 50A output. When the blackout hits, you are not waiting for the utility. You are already running.

Choose your fuel based on what you have on hand

Choose your fuel based on what you have on hand

Fuel availability becomes a real problem during extended outages. Gasoline stations run dry within hours. The tri-fuel design of the GM17000iETC eliminates single-fuel vulnerability. Run it on gasoline for maximum output at 13,500 running watts, switch to propane for cleaner storage and longer shelf life at 12,500 watts, or connect directly to a natural gas line for indefinite runtime at 11,000 watts. The 40L fuel tank gives you meaningful gasoline runtime, and the covered outlets prevent dust accumulation in harsh environments. This is a built-to-survive power source that adapts to your situation, not the other way around.

Inverter-grade clean power with intelligent safety monitoring

Inverter-grade clean power with intelligent safety monitoring

Raw generator power damages electronics. The GM17000iETC uses an inverter system to maintain total harmonic distortion under 3% — safe for laptops, medical equipment, and sensitive appliances. The digital control center displays real-time voltage output, load level, and hours run so you always know exactly what the machine is doing. Integrated CO sensors detect carbon monoxide and trigger automatic shutoff, while low-oil and overload protections prevent damage under heavy or prolonged use. The commercial-grade V-Twin engine and 2-wire auto-start capability let this generator integrate with external control systems for hands-free operation. At 334.4 lb on a 31.3 by 33.1 by 33.5 inch frame, it is a stationary unit built for serious duty.

Installation Compatibility

Verify these conditions before integrating into your backup power system.

  • 50A outlet compatible with your transfer switch or breaker panel input
  • Minimum available of 36 inches on all sides for ventilation and maintenance access
  • 2-wire auto start connection available on your inverter-charger or ATS controller

Built for Real Scenarios

Designed to deliver reliable power when the grid goes down.

Whole-home backup during extended grid outages
Job site power for heavy equipment and tools
Off-grid cabin and homestead primary or backup generation

Full specifications

At a glance

Dimensions
31.3×33.1×33.5 inches
Power
120/240
Warranty
See product page
Full specifications12 data points across 4 categories

Dimensions

Dimensions31.3×33.1×33.5 inches
Weight334.4 lb

Power & Performance

Running Watts13.5(GAS)/12.5(LPG)/11(NG)
Starting Watts17(GAS)/15(LPG)/13.5(NG)
Rated Voltage120/240
Rated Frequency60 Hz
Rated Current112.5(GAS)/104.2(LPG)/91.7(NG)
Fuel Tank40L
Recommended Oil10W-30
Total Harmonic Distortion≤ 3%

Materials

ConstructionSee product page

Compliance & Warranty

WarrantySee product page

The Off Grid Vault Promise

Every product we carry is vetted for real-world performance. If it doesn't meet our standards, it doesn't make the cut.

30-Day Performance GuaranteeIf it doesn't perform as specified, we make it right — uninstalled returns accepted within 30 days in original packaging.
Free ShippingShips free on all orders, including LTL freight delivery. No thresholds, no surprise charges at checkout.
Free System Design ConsultationOur engineers size your system for your actual consumption — no guesswork, no incompatible components.

GENMAX GM17000iETC 17000 Watt Tri-Fuel Inverter Generator

The GENMAX GM17000iETC delivers robust, flexible power when you need it most, combining tri-fuel capability with high performance in a heavy-duty inverter generator design. With a starting wattage of 17,000 W and a running output of 13,500 W, this machine is built to handle large home backup loads, heavy equipment on job sites, or any scenario that demands serious power. Its tri-fuel design lets you run it on gasoline, propane, or natural gas, so you have the freedom to choose what’s available or most convenient under current conditions.

Engineered for precision and safety, the inverter system maintains clean power with ≤ 3% total harmonic distortion, making it suitable for sensitive electronics such as computers, appliances, and medical devices. The control panel provides intuitive feedback with a digital display showing voltage, load, runtime, and other key metrics. Push-button or remote start functionality makes operation easy, and a 2-wire auto start/stop feature offers added convenience and integration options. The unit includes advanced safety systems like CO sensors for carbon monoxide detection, automatic shutoffs for low oil or overload, and thermal protections that ensure reliable operation under heavy or prolonged load.

Built with durability in mind, the GM17000iETC uses a commercial-grade V-Twin engine and components designed to withstand demanding conditions. The cooling and lubrication systems are optimized for efficient operation, reducing wear and temperature stress. Fuel capacity is substantial, allowing extended runtime under partial load, and the metal frame, rugged wheels, and handles facilitate transport to where power is needed most. Despite its size and capability, the unit maintains relatively quiet operation for its class, aided by inverter technology that adjusts engine speed according to load.

This generator is ideal for homeowners who want dependable backup power, contractors who require portable strength, or anyone who needs a versatile, fuel-flexible generator to rely on in emergencies. With its capacity, safety features, and tri-fuel adaptability, the GENMAX GM17000iETC offers both power and peace of mind when the grid fails or when work demands don’t wait.



GM17000iETC

Genmax GM17000iETC Specs

  • Running Watts(kW): 13.5(GAS)/12.5(LPG)/11(NG)
  • Starting Watts(kW): 17(GAS)/15(LPG)/13.5(NG)
  • Rated Voltage(V): 120/240
  • Rated Frequency(Hz): 60
  • Rated Current(A): 112.5(GAS)/104.2(LPG)/91.7(NG)
  • Recommended Oil: 10W-30
  • Fuel Tank: 40L
  • Dimensions (inches): 31.3×33.1×33.5
  • Weight: 334.4 lb



Genmax GM17000iETC Features

  • High-Power: It can be used in various emergency power generation scenarios.
  • Covered Outlets: Avoid dust accumulation in the socket in environments with heavy dust
  • Auto-Start: This generator can be controlled to start and stop through an external intelligent control system
  • Powerful Load-Bearing Capacity: 50A meets the backup power needs of
  • Digital Control Center: The Digital Control Center features an LCD display showing hours run, voltage output, and load level.
  • Tri-Fuel: LPG (propane), NG (methane), and gasoline are three types of fuels
  • Battery Charging: When the battery runs low, it can be charged directly through the adapter to ensure smooth startup when the button is pressed



Your Satisfaction with GenMax is Guaranteed:

  • Lowest Price Guarantee

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