Generac 6250 Liquid Propane / Natural Gas 20kW, 120/240V Aluminum Home Standby Generator from the Guardian Series

- Item #: BCI2221252
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  • 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.
  • Why Buy A Home Standby Generator
    We are all aware of storms that can knock down powers to millions, or record snow falls that bring down trees and power lines. Not matter where we live the electrical grid effects everybody. Most of the grid was built 50 years ago and only had a 40 year life expectancy. Make sure your not left in the dark with a backup standby generator.

20kW, 120/240V Aluminum Home Standby Generator from the Guardian Series

Product Features:

  • 20kW (LP) / 18kW (NG) of power will ensure your home will retain power through unexpected outages
  • 83.3 Amps @ 240 Volts (Single Phase)
  • Connects to existing liquid propane or natural gas fuel supply for easy and efficient power
  • Covered under 5 Year Commercial / Residential Warranty
  • Aluminum enclosure with Rhinocoat finish provides superior corrosion resistance and weather protection, withstanding up to 150 mph winds, making it ideal for coastal climates
  • Multi-lingual Evolution Digital Controller allows for easy monitoring and management of generator functions
  • UL Listed to UL2200 Engine / Generator Standard for Safety
  • Programmable Seven Day Exerciser starts the generator once per week for 12 minutes to prevent oil seal drying and damage between power outages


  • Generac OHVI Engine: This V-twin, overhead valve industrial engine features plateau honed cylinder walls and plasma moly rings which help reduce operating temperature
  • Engine Displacement: 999cc
  • Engine RPM: 3600 (Revolutions per Minute)
  • Air Cooled
  • Covered Under 5 Year Commercial Warranty
  • Covered Under 5 Year Residential Warranty
  • Includes Low Oil / High Temperature Alert and Automatic Shutdown

Product Technologies / Benefits:

  • Solid-State, Frequency Compensated Voltage Regulation: This state-of-the-art power maximizing regulation system provides optimized fast response to changing load conditions and maximum motor starting capability by electronically torque-matching the surge loads to the engine
  • True Power Technology: Delivers less than 5% total harmonic distortion for clean, smooth operation of sensitive electronics and appliances

Product Specifications:

  • Overall Height: 29”
  • Overall Length: 48”
  • Overall Width: 25” 
  • Product Weight: 451 lbs
  • Noise Rating at Normal Operating Load: 66 dbA
  • NG Power Capacity: 18kW
  • LP Power Capacity: 20kW
  • NG Consumption (50% Load): 205 Cu.Ft. per hour
  • LP Consumption (50% Load): 2.08 Gallons per hour

Additional Generac Links

Our SKU: Generac 6250

This product is listed under the following manufacturer number(s):

*Denotes a finish or option that has been discontinued

Generac 6250 Product Specifications

Owner's Manual
Installation Guide
Specification Sheet
Amperage 83
Auto Shut Off Yes
Battery Included No
Battery Type 525 CCA
CARB approved Yes
CC 999
Control Type Digital
Cooling System Air Cooled
Enclosure Material Aluminum
Enclosure Type NEMA 3R
Engine Brand Generac OHVI
Frequency 60
Fuel Type Liquid Propane, Natural Gas
Height 29
Installation Location Outdoor
LP Consumption 2.14
Length 48
Low Oil Alert Yes
Manufacturer Warranty 5 Year Commercial, 5 Year Commercial (Engine), 5 Year Residential, 5 Year Residential (Engine)
Motor RPM 3600
Mounting Pad Material Composite
Natural Gas Consumption 202
Noise Rating 66 dbA at 7m
Phase 1
Transfer Switch Included No
UL Listed Yes
Voltage 120, 240
Wattage 20000
Width 25

Installation Resource Center

Whether you are installing the product yourself or hiring a professional, our installation Resource Center has everything you need to get your project done. Visit the Installation Resource Center to get started.

Buy the Generac Liquid Propane / Natural Gas at Research Generac 6250 Liquid Propane / Natural Gas online. Find 6250 features and specifications. Get the best deal by comparing the Generac Liquid Propane / Natural Gas today.


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