Generac QT02515ANSX

25 kW, 120/240V Steel Standby Power Generator from the Guardian Series

Item # BCI2119382   |   Model # QT02515ANSX   |  Guardian Collection

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Configure your Generac QT02515ANSX 25 kW, 120/240V Steel Standby Power Generator from the Guardian Series

  • 1 - Generator Wattage more info ►

    This is maximum number of watts you will need. It equals running plus surge wattage. Please consult your electrician if you are unsure.

  • 2 - Generator Fuel Type more info ►

    Normally, the generator fuel type will be the same as what powers your home or business.

    • Please Select One
  • 3 - Volt/Phase more info ►

    Please consult your electrician if you are unsure of what your voltage/phase is for your project.

    • Please Select One
  • 4 - Material more info ►

    The enclosure material is the protective outer shell of your generator.

    • Please Select One
  • 5 - Generator Switch more info ►

    The switch monitors and controls all of your generator power distribution. They range from manual to completely automatic. Please consult your electrician if you are unsure.

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    • View Product Detail

Generac Guardian Series 25kW Standby Generator

Product Features:

  • 25kW of power ensures your home or small business will retain power through unexpected outages
  • 104 Amps @ 240 Volts (Single Phase)
  • Connects to existing liquid propane or natural gas fuel supply for easy and efficient power
  • Covered under 2 Year Commercial / Residential Warranty
  • Enclosure made from galvanneal steel offers superior corrosion resistance
  • Weather resistant RhinoCoat paint finish
  • Nexus Digital Controller
  • UL Listed to UL2200 Engine / Generator Standard for Safety
  • Self-Test Mode runs a self test once a week to ensure that your generator will be ready to work when you need it


  • Generac DOHC Engine: This dual overhead cam, in-line four cylinder engine is the smallest liquid cooled engine offered by Generac, packing more power into a smaller footprint
  • Engine Displacement: 1.5L
  • Engine RPM: 3600 (Revolutions per Minute)
  • Liquid Cooled
  • Covered Under 2 Year Commercial Warranty
  • Covered Under 2 Year Residential Warranty
  • Includes Low Oil Alert and Automatic Shutdown

Product Technologies / Benefits:

  • Solid-State, Frequency Compensated Voltage Regulation: Digital voltage regulation at ±1%
  • Generac Nexus Controller: The dual line, tri-lingual LCD display allows for easy monitoring and management of generator functions

Product Specifications:

  • Overall Height: 34”
  • Overall Length: 63”
  • Overall Width: 29”
  • Noise Rating at Exercise: 61 dbA (when the unit is running a self check)
  • Noise Rating at Normal Operating Load: 70 dbA
  • NG Power Capacity: 25kW
  • LP Power Capacity: 25kW
  • NG Consumption (50% Load): 297 Cu.Ft. per hour
  • LP Consumption (50% Load): 3.3 Gallons per hour

Additional Generac Links

This Generac item can also be referenced by the following color/finish specific model #:

  • Generac QT02515ANSX
    Liquid Propane / Natural Gas

*Discontinued model or finish

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Manufacturer Resources

Product Videos

  • Generac Standby Generator Saves the Day
    Learn about Generac Standby Generators and how they saved the day in a small mid west town.
  • Generac Standy Generator Commercial
    Watch the Generac Standby Generator Commercial.

Installation Resource Center

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