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The cummins 20gsbb-6714a - 20kw home standby generator w/ cold weather kit is available for purchase today.

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Cummins 20GSBB-6714A - 20kW Home Standby Generator w/ Cold Weather Kit

(Based on expert analysis, manufacturer ratings and customer reviews)
4.0 out of 54.0 out of 54.0 out of 54.0 out of 54.0 out of 5
4 Reviews
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  • Features
  • Specs
  • 2
    Q&A 
  • 4
    Reviews
  • Articles
  • Accessories

Grade
Air Cooled Standby Generators
Style
Watts
20 kW
Rated Watts
Voltage
120/240V
Single-Phase
Fuel
Engine
Need Help? Ask Our Generator Experts.
Powered By A 993cc Air-Cooled V-Twin OHV Engine
Automotive-style lubrication system w/ Spin-on oil filter

Weather Protective Sound Enclosure
Made of thick, 11-gauge powder coated aluminum
All maintenance points are easily accessible w/o tools
Large, low noise, automotive grade corrosion resistant muffler

Cummins Proprietary Control System
Self-diagnostics, gen-set protection and safety features

Internet & E-Mail Capability
Monitor gen status online & can email if service is required

In-Home LCD Display
Easily monitor, run and exercise generator

Easy Installation
Innovative molded polymer base - no need for a concrete pad
Lift-off enclosure for close proximity installs & 12" fuel line

Cold Weather Model - For Climates where temp falls below 32°F
Carb base plate heater, crankcase oil hear & alternator dryer

Requires Automatic Transfer Switch - (Sold Separately)

Battery Blanket (Sold Separately)


Model
  Model Number:20GSBB-6714A
 Manufacturer:Cummins Power Generation
 Made in USA:Yes
Engine
 Brand:Cummins Onan
 HP/CC:993 HP
 Consumer Engine Warranty:5 Years
 Commercial Engine Warranty:Not Available
 Engine RPM:3600 RPM
 Low Oil Alert/Shutdown:Yes
Product Specs
 Voltage120/240 Single-Phase
 Frequency:60 Hertz
 Cooling SystemAir Cooled
 Fuel TypeLP/Natural Gas
 NG Power Capacity17,280 Watts
 LP Power Capacity19,000 Watts
 NG Consumption (50% Load)135 ft³/hr (BTU: 135,000 BTU/HR)
 NG Consumption (100% Load)240 ft³/hr (BTU: 240,000 BTU/HR)
 LP Consumption (50% Load)1.5 gallons/hr (BTU: 136,125 BTU/HR)
 LP Consumption (100% Load)3.0 gallons/hr (BTU: 272,250 BTU/HR)
 Rated Amps:83 Amps @ 240 Volts (Single Phase)
 Decibel Rating @ 7m:62 db(A)
 A/C Ton Rating5-Tons
 EnclosureAluminum
 Mounting PadComposite (Included)
 Transfer Switch:Automatic (Not Included)
Overview
 Battery:Not Included (530 CCA)
 UL ListedYes
 Weight:540 Lbs.
(134.62 x 109.22 x 88.14 cm)
 Dimensions:53"L x 43"W x 34.7"H
 Consumer Warranty:5 Years
 Commercial Warranty:Not Available
Download Documents


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  2 Questions
Q: 1. I have been advised that the Cummins Onan warranty only remains affective if a certified CO technician installs and annually services the unit - And that the service contract (locally $500/yr) is only for routine check and does not cover any actual repair or parts. This is onerous - Is it accurate and standard for the CO brand?
2. Is there a formula or chart where I can plug in #s to calculate how long a certain # of KW will run per gallon of propane? (ie, How long would a 20,000 KW unit run at full capacity on 300 gal of LP?)

by Anna Kerr from Virginia on October 21, 2013

A: We have confirmed with Cummins Onan....

"The Cummins Onan warranty covers the product for quality & workmanship. These products can be installed by a qualified contractor and the warranty stays with the product. They can also be maintained by whomever the owner is comfortable with."

The fuel consumption information is available on the manufacturers specification sheet and the 20kW model uses the following....

25% - 1.0 Gal/Hr.
50% - 1.5 Gal/Hr.
75% - 2.1 Gal/Hr.
100% - 3.0 Gal/Hr.

You can calculate the full load (100%) based on a 24 hour time period.

3.0 x 24 = 72 Gal Per Day

This should help you determine the tank size for maximum usage. Please keep in mind that fuel consumption is based on the load put on the generator. So, if you are conscious of what you are running in the home and keep the loads low you will use lower amounts of fuel.

RS20 Specification Sheet

by Mike, Product Expert

Q: What automatic transfer switch is to be used with 20KW Cummins Onan home standby?
by Steve from Maryland on June 29, 2012

A: The following switches are listed under the accessories link/tab and work with this Cummins Onan model standby generator.

Cummins Onan 200A Standard ATS

The above switch would be powering a sub-panel.

Cummins Onan 200A Service Entrance ATS

The above switch is designed for whole house applications.

Note: There are some other accessories required to properly connect the switch to the generator and can be found under the same accessories link/tab.

by Mike, Product Expert

Cummins Power Generation 20GSBB-6714A Reviews & Ratings
Write Review
Overall Rating
Features
4/5
Quality
4/5
Performance
4/5
Value
4/5
Overall
4.0 out of 54.0 out of 54.0 out of 54.0 out of 54.0 out of 5
Pros
Quiet (2)
Reliable (2)
Easy To Use (1)
Features (1)
High Quality (1)
Cons
Expensive (2)
Bad Instructions (1)
100% of respondents would recommend this product to a friend
4 Reviews  Sort by 
 
Ross
Total Helpful Votes
26 Helpful Votes
REVIEWED
NOV.
02
2012
5 out of 55 out of 55 out of 55 out of 55 out of 5
Good Product
Onan produces superior products but they are somewhat more expensive.

The IP / email connectivity is a great feature if you are away. It uses about 1/2 pint of oil per day, which I thought was a lot until I spoke to owners of Kohler and Generac...they report more usage.

The packaged transfer switch creates a neat installation. This is a VERY quiet unit...quieter than most 1,800 RPM units which cost much more.
Was this review helpful?
261
Gernot Ritzau
Kensington, MD
Total Reviews
2 Reviews
Total Helpful Votes
21 Helpful Votes
REVIEWED
SEP.
16
2013
5 out of 55 out of 55 out of 55 out of 55 out of 5
I'm The Installer
I have installed many of these systems and ONAN is by far the best system I have ever had my hands on! Although they are not very competitive towards pricing, you get what you pay for! Out of the last 100 Generac systems I have installed 6 have failed before the first outage! Can't say the same for ONAN.

Since there are more Generac dealers and servicing companies around it may make their network stronger, but you can just as easily find an onan serving company. If you installed this system... more
Pros: Durable, Quiet, Reliable, High Quality
Cons: Bad Instructions, Expensive
Gernot Recommends This Cummins Power Generation Product
Was this review helpful?
202
Toby H.
Old Bridge, NJ
Total Helpful Votes
16 Helpful Votes
REVIEWED
NOV.
05
2013
5 out of 55 out of 55 out of 55 out of 55 out of 5
Cummins Onan Factory Trained Dealer/svc Tech
I am certified by Cummins Onan who also provides all the necessary training and tests. This makes sure no one working on their equipment is unfamiliar or has the necessary training to perform all the maintenance properly. I read another review saying that all they do is tests and its 500.00 not incl any repairs. Well to that I say If you properly maintain your equipment it shouldn't need any repairs. Also maintenance includes things like an oil change and air filter, testing, cleaning, etc.... more
Pros: Features, Easy To Use, Quiet, Reliable
Cons: Expensive
Toby Recommends This Cummins Power Generation Product
Was this review helpful?
160
David
Total Helpful Votes
30 Helpful Votes
REVIEWED
NOV.
02
2012
1 out of 51 out of 51 out of 51 out of 51 out of 5
Don't Buy
Bought because I heard it was the best. Wrong!Main controller board failed. $2,000 repair!

Part not available at dealer, regional warehouse or at national headquarters! Might be available in Canada if I wait two weeks!

Bad service terrible unit!
Was this review helpful?
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