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Cummins Power Generation

Model # 20GSBB-6713B & RSS200-6869

Internet # 204285785

19,500-Watt Air Cooled Automatic Home Standby Generator

This item has been discontinued.
The Home Depot no longer carries this specific product.

$5,399.00 /each



Model # 20GSBB-6713B & RSS200-6869

Internet # 204285785

The Cummins Power Generation RS20A residential standby generator ensures that life goes on even when the power goes out. The versatile RS20A is switchable to run on Natural Gas or Liquid Propane Vapor for easy installation using which ever fuel source is available. The RS20A is manufactured in the United States using Cummins designed alternator, electronic control and high-quality commercial-grade materials for safe, reliable performance. The patented sound attenuating enclosure is manufactured from 11-gauge aluminum and automotive grade polypropylene for corrosion free outdoor installation. This patented enclosure design ensures the RS20A is the quietest generator in its class. Third party testing revealed only 62 dB (a) under a normal load, measured at 7 m. The RS20A is US EPA emissions certified and UL 2200 Listed. Cummins Power Generation residential products adhere to National Electrical Code (NEC) and National Fire Protection Association (NFPA) requirements. This generator is not approved for use outside of the USA.

  • Automatic load management - the intelligent generator control automatically manages nonessential household loads for maximum utilization of generator power
  • Powerful motor starting - starts and runs a 5-Ton A/C under full pre-load
  • Cold start kit required for operation in areas where the ambient air temperature drops below 20° F
  • Self-diagnostic capability: service and maintenance information displayed on in home display
  • Easy installation with innovative molded polymer installation base - no need for a concrete pad
  • Attractive and discreet housing designed for very quiet operation
  • Standard internet remote monitoring - allows owner to start and stop the generator, as well as monitor the status from anywhere in the world via a smart phone or other internet enabled device
  • U.S EPA certified
  • 5-year, 2000 hour limited warranty
  • Voltage: 120/240
  • Quality power output, less than 5% THD
  • Natural gas fuel consumption (cu. ft./hr): 1/2 load : 135, full load: 240
  • Liquid propane (cu. ft./hr (Gal./hr)): 1/2 load: 53 (1.5), full load 110 (3)
  • Rated amps, natural gas: 144/72, LPV: 162.5/81.26
  • Requires 12-Volt, maintenance free, group 26r battery with minimum 545 cold cranking amps - not included

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Length (in.) 
Product Width (in.) 
CA (CARB) Compliant 
Not CARB Compliant 
Color Family 
Commercial / Residential 
Commercial / Residential 
Continuous Wattage 
Engine Displacement (cc) 
Engine Make 
Briggs and Stratton 
Generator Features 
Hour Meter,Low Oil Shutdown,Overload Protection 
Operational volume (dB) 
Product Weight (lb.) 
630 lb 
Remote Monitoring 
Response time (sec.) 
UL Listing 
3-UL Classified 
Warranty / Certifications
Certifications and Listings 
3-UL Classified,ETL Listed 
ENERGY STAR Certified 
Manufacturer Warranty 
5 year, 2000 hour limited 


Rated 5.0 out of 5 by 1 reviewer.
Rated 5.0 out of 5.0 by Great Generator, and really Quiet! I needed a backup generator that would provide power to the whole house. I started looking and comparing generators. This generator is prewired to provide a trickle charge voltage to the battery, this is not an industry standard, it is an add on option. It has a remote control panel standard that is not an industry standard, but an add on option. It is quiet! you can stand beside this generator running under load, and hold a conversation in a normal tone of voice. I mean literally a foot away from it, you can actually whisper to someone and they'll hear you. Inside the house I can't even hear it running. I really mean it's quiet. I went through the Home Depot Installation Service, and their installers in my area are fantastic! They worked with me on every aspect of the installation, and took pride in their work even changing the installation because they saw a better way to make a cleaner installation. During the startup testing we did the utility failure test, and at 8 seconds the generator was supplying power to the house. It handles the heat pump with no issues, as well as the electric furnace. There was no power blink when they came on. All we saw was an increase in the load on the generator. 10 seconds for an automatic transfer commercial generator is industry standard. There is no residential standard. 5 minutes after power was restored, the transfer switch unloaded the generator automatically. Industry standard is 1-5 minutes. 5 minutes is to ensure full restoration of utility power. The generator went through a 5 minute cool down prior to shutting down. There is no industry standard for residential generators. Everything is controlled from inside the house at the remote control panel, not at the generator. Power readings are taken inside the house, not at the generator. You can leave everything in automatic, and it's a touch free operation to include a test you can schedule any day of the week. You can also manually start/stop the generator, and transfer the load. There is a manual start at the generator if needed and a manual transfer at the transfer switch, but normal operation is from inside. As for the remote control panel, it monitors the load on both circuits, displaying voltage, frequency, and percentage of load during operation. When the generator is in standby, it displays the battery voltage for monitoring. You can review the events log to see if there were and outages, when the generator last started/stopped, changes to the system configuration, and when the last exercise test was run. The faults log will display any potential problems such as low oil pressure, low battery voltage, when the transfer switch is in manual, and more. The indicators on the panel tell you if there is utility power and if connected, if the generator is running, if it's not in automatic standby, and if there is a configuration problem or fault requiring action. You also have the option to wire this into your home network for remote monitoring while away from home that is a hardwire Ethernet connection. The generator base is strong and designed for installation in gravel. There is a rubber boot in the bottom of the housing designed to route power lines from underneath. It comes with a gas regulator inside the housing. The housing can be locked for security, and it's really a stout housing that could easily take the weight of an average person. There is a breaker on the generator to isolate the generator from the ABT when working on the generator, plus a remote/off/manual start switch. The Automatic Bus Transfer (ABT) switch is complete with lockout/tagout control on the breaker. This is necessary for any electrical work done at the ABT breaker or main power panel. There is a remote/manual switch inside for the ABT switch as well as a manual physical throw with an included throw lever. So the ABT has 3 ways in which to operate. Right now the only time I have to open the generator housing is to show it off to my friends, and for scheduled maintenance. The only time I have to open the ABT panel is for scheduled maintenance. The only thing I have to do at the remote control panel is look at it, unless I want to review the events and faults logs. For the bad news. Most residential generators are rated on surge load power, not average power. This generator can handle a surge load of 19,500 Watts for 3 minutes before load shedding. Average power output is 10,000 Watts on Propane, and 8,400 Watts on natural gas. I found this out from the Cummins Distributor, and it's also in the installation/operators manual, which I had to request from the Cummins Distributor. If you're looking at a backup generator make sure to research the average power output based on the fuel source. The control cables are not included, so don't forget to order those when purchasing this generator. You need one for the ABT to the generator, I got the 25' length. And one for the remote control panel to the generator. I went big with the 100' length, and barely made it. November 9, 2014
  • 2015-07-27T11:56:46.582-05:00
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