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Model # 20GSBB-6713
MSRP: $4,478.00
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Avg. Product Review Rating: 4.5/5 (based on 2 reviews - read reviews) Write a Review - $10 Store Credit

Cummins RS20A 20kW NG/LP Standby Generator 20GSBB 6713

  • Very quiet operation
  • Internet remote monitoring and email notification
  • Automatic load management - The intelligent generator control automatically manages non-essential household loads for maximum utilization of generator power
  • Designed alternator and electronic control
  • Starts and runs a 4 ton A/C under full pre-load
  • GFCI Ready
  • Self-diagnostic capability
  • Service & maintenance viewable on the in home display
  • Easy installation with innovative molded polymer installation base - no need for a concrete pad
  • Commercial/Consumer Warranty: 5 Year or 2000 Hour Limited

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Cummins Power Generation 20GSBB-6713 Details and Specifications

Cummins Power Generation RS20A 20kW Standby Generator, Natural Gas and Propane, EPA and CARB Emissions compliant for use in all 50 states

Comfort, Security and Convenience are the things you can depend on with a Cummins Residential Standby Generator...just in case the power goes out.  With power outages occurring more and more frequently, it is good to be prepared.  A Cummins Standby Generator can give you peace of mind and the ability to live your busy life, uninterrupted.

A Cummins residential home standby generator set offers many features not found on portable generator sets, such as a more sophisticated control system, a fully weather protective enclosure, significantly quieter operation, and more capacity so you can power more conveniences.  It goes on automatically when you need it and shuts down automatically once main power is restored.  It is connected directly to a fuel system and your home's electrical system so you won't have to fill a gas tank or manually transfer power from the utility to the home standby unit.


Very Quiet Operation

Load Management: Automatically turns on/off loads to prevent generator overload.  Easy to set up from In-Home Display.  Easily connected at the generator.

Internet remote monitoring and email notification with the included In-Home Display

Cummins designed alternator and electronic control

Powerful motor starting - starts and runs a 5 ton A/C under full pre-load

Self-diagnostic capability, Programmable Exerciser

Service and maintenance information displayed on the included In-Home Display

Easy installation with innovative molded polymer installation base - no need for a concrete pad.

Electronic Governor for precise frequency control

Flexible 12 inch fuel line provided with genset

Generator designed and manufactured in the USA.

UL 2200 Listed and EPA and CARB Emissions compliant for use in all 50 states

5 Year, 2000 Hour Limited Manufactures Warranty

Product Specifications

Model Number 20GSBB-6713A
Manufacturer Cummins Power Generation
Made In USA Yes
Rated Watts 20kW
Rated Amps 81 Amps
Voltage 120/240V Single Phase
A/C Ton Rating 5 Ton
Enclosure Aluminum
UL Listed Yes
Decibel Rating 62
Starting System Automatic Start
Low Oil Alert Yes
Hour Meter Yes
Battery Requirement 12V, Group 26R, 545 CCA
Mounting Pad Composite Base Attached
Product Weight 540 lbs
Dimensions (Inches) 53L x 43W x 34.7H
Engine Brand Cummins Designed
Engine Size 993cc, OHV V-Twin
Engine RPM 3600
Cooling System Air Cooled
Alternator Type Brushed
Frequency 60 Hz
Auto Voltage Regulation Yes
Fuel Type Natural Gas (NG) / Propane (LP)
NG Power Capacity 18kW
LP Power Capacity 20kW
NG Consumption @ Full Load 240 cu.ft/hr
NG Consumption @ 1/2 Load 135 cu.ft/hr
LP Consumption @ Full Load 3.0 gal/hr
LP Consumption @ 1/2 Load 1.5 gal/hr
Transfer Switch
Transfer Switch Model Sold Separately
Warranty Information
Consumer Warranty 5 Year/2000 Hour Limited
Shipping Weight 640 lbs
Shipping Dimensions 40H x 55W x 48D
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Product Reviews

  1. Good product but electricians where I live not familiar with it.

    Posted by Arlene on 9th Feb 2012

    Compact, sturdy and will handle black-outs smoothly.

  2. Excellent choice for a generator

    Posted by Pat Forbes on 26th Jan 2012

    I had heard about Cummins Onan 20 kW standby generator from one of my co-workers who recommended it because of its compact casing and very quiet operation. We live 2500 square foot home with a really small yard so not only does the lot have little room for big objects but our neighbors are closer than a lot of people?s so it was really important that it did not disturb anyone. We have had our generator now for 3 years now without a single problem. Of course we do get our scheduled maintenance checks which probably help more than we realize.

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Shipping Terms

All generators include 24 hour delivery notification and residential delivery. Liftgate service is available on all air-cooled generators and some liquid cooled units – Please call for verification. Free Shipping is curbside service only. Curbside service means the freight company will deliver to your address and lower your generator to the ground. The freight company will not back down driveways, place a generator in a building or where it is being installed. You are responsible for arranging the movement and setting of the generator.

Some restrictions apply to "Free Shipping" you may either view our
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