Generac 6244 Liquid Propane / Natural Gas 20kW Aluminum Standby Generator System (200A Service Disconnect + AC Shedding) from the Guardian Series

- Item #: BCI2216433

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20kW Aluminum Standby Generator System (200A Service Disconnect + AC Shedding) 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
  • Includes RTSY200A3 Generac Smart Switch automatic transfer switch (200 Amp)
  • 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 6244

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

  • Generac 6244*
    Liquid Propane / Natural Gas

*Denotes a finish or option that has been discontinued

Generac 6244 Product Specifications

Owner's Manual
Specification Sheet
Installation Manual
Installation Sheet
AC Ton Rating 2 x 5-Tons
ATS Load Shedding Yes
ATS Poles 2
ATS Service Disconnect Yes
Alternator Type Brush
Amperage 83
Auto Shut Off Yes
Auto Voltage Regulation Yes
Battery Included No
Battery Type 525 CCA
CARB approved Yes
CC 999
Cast Iron Sleeve Yes
Control Type Digital
Cooling System Air Cooled
Electric Start Yes
Enclosure Material Aluminum
Enclosure Type NEMA 3R
Engine Brand Generac OHVI, Generac
Engine Size 999
Frequency 60
Fuel Type Liquid Propane, Natural Gas
Generator Style Standby
Grade Emergency
Height 29
Hour Meter Included Yes
Installation Location Outdoor
LP Consumption 2.14
LP Power Capacity 20000
Length 48
Low Oil Alert Yes
Made in America Yes
Manufacturer Warranty 5 Year Commercial, 5 Year Commercial (Engine), 5 Year Residential, 5 Year Residential (Engine), 5 Year
Motor RPM 3600
Mounting Pad Included Yes
Mounting Pad Material Composite
NG Power Capacity 18000
Natural Gas Consumption 202
Noise Rating 66 dbA at 7m
Number of Cylinders 2
Outdoor Sound Level (dba) 66
Phase 1
Product Weight 541
RPM (High) 3600
Rated Amps 83.3 Amps @ 240 Volts (Single Phase)
Run Watts 20000
Starting System Electric
Transfer Switch Amperage 200
Transfer Switch Included Yes
Transfer Switch Style Automatic
UL Listed Yes
Voltage 120, 240
Voltage Meter No
Wattage 20000
Width 25

Installation Resource Center

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Generac 6244 Reviews

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