Free Freight on Most Electric GeneratorsFree Shipping On Electric Generators (Lower 48)
Home » » »
Standby Sizing Calculator
Standby Sizing Calculator

Generac Centurion™ 5813 - 20kW Standby Generator System (Aluminum Enclosure)

Generac Centurion™ 5813 - 20kW Standby Generator System (Aluminum Enclosure)
Our Price
Compare Prices
Shipping Info
Model: 5813
(Based on expert analysis, manufacturer ratings and customer reviews)
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5
Number of Reviews (9)
Write A Review
Product Discontinued
Sorry, this product is no longer available.
Continue Shopping With These Categories
Shop All Generator Systems
Discontinued
Sorry, this product is no longer available
Free Freight
Free Freight
Lift Gate Services
Lift Gate Service
*We currently CANNOT ship this product to Alaska, Hawaii, California or any destination outside of the United States
Share
  • Product Description
  • 9
    Reviews
  • 1
    Product Q&A
  • Recommended Accessories
  • How-To Articles
  • Manuals
Product Description
+−
Grade
Style
Run Watts
20,000
Rated Watts
Voltage
120/240 Single-Phase
Fuel
Engine
Grade
Emergency
Style
Standby (Air Cooled)
Run Watts
20,000
Voltage
120/240 Single-Phase
Fuel
LP/Natural Gas
Engine
Generac
Features
Features
  • Small Whole House Protection
  • Capable of powering a small house with one 5-ton central a/c
  • Runs off natural gas or LP fuel
  • Includes 200-AMP ATS (RTSN200A3)
  • Provides backup power to all circuits in your load center
  • NOT compatible with new Digital Load Management (DLM)
  • Generac OHVI Engine
  • Powerful and reliable air-cooled V-twin engine
  • Electronic Governor
  • Maintains precise control of engine speed & electrical frequency
  • Whisper-Test™ Low Speed Exercise Mode
  • Engine runs at reduced speed during exercise cycles
  • Exercises at a quiet 60 decibels at 23 feet
  • Sound level comparable to an idling car
  • Aluminum Enclosure
  • Corrosion-resistant material ideal for salty air conditions
  • Sound attenuated acoustically designed enclosure
  • Built-in Battery Charger
  • Battery Sold Separately
Specifications
Product Specs
Voltage
120/240 Single-Phase
Frequency
60 Hertz
Rated Watts
20000 Watts
Surge Watts
20000 Watts
Fuel Type
LP/Natural Gas
NG Power Capacity
18000 Watts
LP Power Capacity
20000 Watts
NG Fuel Consumption @ 50% Load
206 ft³/hr
LP Fuel Consumption @ 50% Load
1.89 gallons/hr
Rated Amps
83 Amps
Decibel Rating @ 7m Learn More Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB.
66 dbA
Transfer Switch
Automatic (Included)
Transfer Switch Amperage
200-Amps
Battery
Not Included (525 CCA)
Enclosure
Aluminum
A/C Ton Rating
5-Tons
Mounting Pad
Composite (Included)
Transfer Switch Style
Standard Installation
ATS Load Prioritizing
Not Compatible
ATS Load Shedding
Not Compatible
ATS Poles
2 Poles
ATS Service Disconnect
No
Cooling System
Air Cooled
UL Listed
Yes
Grade Type
Emergency
Engine
Engine Brand
Generac
HP
36 HP
CC
999 CC
Consumer Engine Warranty
3 Years
Commercial Engine Warranty
3 Years
Engine RPM
3600 RPM
Low Oil Alert/Shutdown
Yes
Overview
Weight
541 Pounds
Made in USA
Yes
Consumer Warranty
3 Years
Commercial Warranty
3 Years
Product Style
Standby Generator
Product Length
48 Inches
Product Width
25 Inches
Product Height
29 Inches
Grade
Style
Run Watts
20,000
Rated Watts
Voltage
120/240 Single-Phase
Fuel
Engine
Grade
Emergency
Style
Standby (Air Cooled)
Run Watts
20,000
Voltage
120/240 Single-Phase
Fuel
LP/Natural Gas
Engine
Generac
Features
Features
  • Small Whole House Protection
  • Capable of powering a small house with one 5-ton central a/c
  • Runs off natural gas or LP fuel
  • Includes 200-AMP ATS (RTSN200A3)
  • Provides backup power to all circuits in your load center
  • NOT compatible with new Digital Load Management (DLM)
  • Generac OHVI Engine
  • Powerful and reliable air-cooled V-twin engine
  • Electronic Governor
  • Maintains precise control of engine speed & electrical frequency
  • Whisper-Test™ Low Speed Exercise Mode
  • Engine runs at reduced speed during exercise cycles
  • Exercises at a quiet 60 decibels at 23 feet
  • Sound level comparable to an idling car
  • Aluminum Enclosure
  • Corrosion-resistant material ideal for salty air conditions
  • Sound attenuated acoustically designed enclosure
  • Built-in Battery Charger
  • Battery Sold Separately
Specifications
Product Specs
Voltage
120/240 Single-Phase
Frequency
60 Hertz
Rated Watts
20000 Watts
Surge Watts
20000 Watts
Fuel Type
LP/Natural Gas
NG Power Capacity
18000 Watts
LP Power Capacity
20000 Watts
NG Fuel Consumption @ 50% Load
206 ft³/hr
LP Fuel Consumption @ 50% Load
1.89 gallons/hr
Rated Amps
83 Amps
Decibel Rating @ 7m Learn More Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB.
66 dbA
Transfer Switch
Automatic (Included)
Transfer Switch Amperage
200-Amps
Battery
Not Included (525 CCA)
Enclosure
Aluminum
A/C Ton Rating
5-Tons
Mounting Pad
Composite (Included)
Transfer Switch Style
Standard Installation
ATS Load Prioritizing
Not Compatible
ATS Load Shedding
Not Compatible
ATS Poles
2 Poles
ATS Service Disconnect
No
Cooling System
Air Cooled
UL Listed
Yes
Grade Type
Emergency
Engine
Engine Brand
Generac
HP
36 HP
CC
999 CC
Consumer Engine Warranty
3 Years
Commercial Engine Warranty
3 Years
Engine RPM
3600 RPM
Low Oil Alert/Shutdown
Yes
Overview
Weight
541 Pounds
Made in USA
Yes
Consumer Warranty
3 Years
Commercial Warranty
3 Years
Product Style
Standby Generator
Product Length
48 Inches
Product Width
25 Inches
Product Height
29 Inches
Product Specs
+−
Specifications
Product Specs
Voltage
120/240 Single-Phase
Frequency
60 Hertz
Rated Watts
20000 Watts
Surge Watts
20000 Watts
Fuel Type
LP/Natural Gas
NG Power Capacity
18000 Watts
LP Power Capacity
20000 Watts
NG Fuel Consumption @ 50% Load
206 ft³/hr
LP Fuel Consumption @ 50% Load
1.89 gallons/hr
Rated Amps
83 Amps
Decibel Rating @ 7m Learn More Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB.
66 dbA
Transfer Switch
Automatic (Included)
Transfer Switch Amperage
200-Amps
Battery
Not Included (525 CCA)
Enclosure
Aluminum
A/C Ton Rating
5-Tons
Mounting Pad
Composite (Included)
Transfer Switch Style
Standard Installation
ATS Load Prioritizing
Not Compatible
ATS Load Shedding
Not Compatible
ATS Poles
2 Poles
ATS Service Disconnect
No
Cooling System
Air Cooled
UL Listed
Yes
Grade Type
Emergency
Engine
Engine Brand
Generac
HP
36 HP
CC
999 CC
Consumer Engine Warranty
3 Years
Commercial Engine Warranty
3 Years
Engine RPM
3600 RPM
Low Oil Alert/Shutdown
Yes
Overview
Weight
541 Pounds
Made in USA
Yes
Consumer Warranty
3 Years
Commercial Warranty
3 Years
Product Style
Standby Generator
Product Length
48 Inches
Product Width
25 Inches
Product Height
29 Inches
Reviews
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5
(9)
+−
Centurion 5813 Reviews & Ratings
Product Q&A
(1)
+−
Search Product Q&A's Answered by Jared, the Generator Expert
icon-social-fb1
+−
Who is the manufacturer of the engine?
Roger Paul 
from Georgia 
May 11, 2012
Answer
This engine is built by Generac in Wisconsin. It is their OHVI Industrial engine specifically engineered and designed for generator use.
Recommended Accessories
+−
Expert Recommended Accessories Hand Picked By Our Expert Jared
icon-social-fb1
Required Accessories Add All Required
Optional Accessories
How-To Articles
+−
Manuals
+−
 
 
×
Generac Centurion™ 5813 - 20kW Standby Generator System (Aluminum Enclosure)
Centurion 5813
+
–
↻Reset View
Centurion 5813
Centurion 5813
×
Customer Review Images
Hide