How to Pick the Perfect Home Standby Generator
With increasing power outages, pandemic shutdowns, and social unrest sweeping t...
%205813%20has%20been%20discontinued.%20Check%20out%20Expert's%20recommended%20alternatives%20for%20another%20top%20standby%20generators%20air-cooled%20generator.)
Local Pickup FAQ's
Hover to zoom
1 of 2
Generac Centurion™ 5813 - 20kW Standby Generator System (Aluminum Enclosure)
Model:
5813
+
Share This Product
Similar Products
$4,190.00
$4,174.00
$6,497.00
$7,097.00
$6,992.99
$6,247.00
$7,592.99
Recommended Accessories
Expert Recommended Accessories
Selected by Jared, our Expert
Optional Accessories
4
$473.99
Factory-Direct
$26.99
Only 1 In-Stock
$28.99
In-Stock
Model: THP103
$44.99
Only 5 In-Stock
Features
Grade
Emergency
Style
Standby (Air Cooled)
Run Watts
20,000 Rated Watts
Voltage
120/240 Single-Phase
Fuel
LP/Natural Gas
Engine
Generac
- 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
5813
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
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
Decibel Rating @ 7m
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
Reviews
(9)
Centurion 5813 Reviews & Ratings
Customer Photos and Videos
Customer Rating
5.00
(9 Ratings)
5
(9)
(9)4(0)
(0)3(0)
(0)2(0)
(0)1(0)
(0)
Just Count to 10
By Dean H.
Louisiana
Purchased 07/25/2010 |
Review Posted 07/08/2014
Installed it in 2009 and love it! Works everytime without fail. Lights go out and we count to 10.
This unit gives me great piece of mind when i'm working away from my family and know that they are protected and my wife doesn't have to deal with our old portable unit which she does not know how to operate. The longest the unit has continuoulsy run was for 3 days and we were sure glad to have it if not just for being able to run the air conditioner. This unit runs my whole house and we never miss a beat when the power is out.
This unit gives me great piece of mind when i'm working away from my family and know that they are protected and my wife doesn't have to deal with our old portable unit which she does not know how to operate. The longest the unit has continuoulsy run was for 3 days and we were sure glad to have it if not just for being able to run the air conditioner. This unit runs my whole house and we never miss a beat when the power is out.
Dean H. Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
Easy To Use, Fast, Reliable, I'd Buy It Again
Best Investment
By Ed B.
Knoxville, Tennessee
Review Posted 01/21/2011
Best investment I have ever made. We live in the country on a dead end road and when our power goes off it is a minimum of 12 hours to two days before it get's restored.
Installation was simple and the unit performs great, now we will have water since we have a well and don't have to worry about our food spoiling in our refrigerators, not to mention TV!
Ordered the generator and it was delivered two days later.
Installation was simple and the unit performs great, now we will have water since we have a well and don't have to worry about our food spoiling in our refrigerators, not to mention TV!
Ordered the generator and it was delivered two days later.
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Generator Installation
By Robert M.
Vernon, Vermont
Purchased 11/05/2010 |
Review Posted 01/03/2011
I am pleased with the generator doing exactly as it is designed to do. I installed the unit myself, and swore that I would never again install another one. The generator itself wasn't the problem. The wire from the utility co. ( meter ) to the service entrance was 2 ga. which is difficult to bend to say the least. The wire to the automatic switch from the generator was 100 amp.wire which bent easier but was still bad enough. After all the connections were made everything worked to perfection which made up for the trouble of the installation.
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Big Sigh Of Relief
By Raymond Duhon
Lake Charles, Louisiana
Purchased 08/21/2010 |
Review Posted 11/17/2010
I helped my dad install his Generac 13KW generator between Hurricanes Rita and Ike. For Ike, we were without electricity for 4 days, but their generator took care of their essential loads which made their lives easier for a couple their age. They didn't have to look for a hotel room in another state or area of this state. They stayed home.
We shopped around for a good generator for a good price and found the 20KW on this site for cheaper than the 17KW around our area, and the 17KW didn't carry the whole house.
I poured a slab one day and my dad and I installed it in the next 2 days. The instructions were easy to understand, but there was more work than the 13KW and 17KW, but we wanted whole house power, not partial power.
Hopefully we will never have to use it for an emergency, but having peace of mind knowing that it will take care of us when needed. My wife thought it was a crazy idea to spend this much money on one, until my parents practically paid for itself in the 4 days they were out of electricity and we had to run a small gasoline generator to run our freezers and refrigerators, but no air conditioner.
It was easy to program, it runs weekly like it is supposed to. Every time we hear it test run, we feel at ease knowing we don't have to worry about storing 100 gal. of gasoline in the shed outside.
We shopped around for a good generator for a good price and found the 20KW on this site for cheaper than the 17KW around our area, and the 17KW didn't carry the whole house.
I poured a slab one day and my dad and I installed it in the next 2 days. The instructions were easy to understand, but there was more work than the 13KW and 17KW, but we wanted whole house power, not partial power.
Hopefully we will never have to use it for an emergency, but having peace of mind knowing that it will take care of us when needed. My wife thought it was a crazy idea to spend this much money on one, until my parents practically paid for itself in the 4 days they were out of electricity and we had to run a small gasoline generator to run our freezers and refrigerators, but no air conditioner.
It was easy to program, it runs weekly like it is supposed to. Every time we hear it test run, we feel at ease knowing we don't have to worry about storing 100 gal. of gasoline in the shed outside.
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Get Er Done!
By david
carnation, Washington
Purchased 10/12/2010 |
Review Posted 11/02/2010
Just installed today,the electrician had no problems.Everything but the hotwater heater and range are able to get up and running.
After years of listening to my neighbors generators when power go out, no more sinking feeling of "ok it'll just be for a little while". That little while took 2 weeks a few years.
Nice little product. I am ready!
After years of listening to my neighbors generators when power go out, no more sinking feeling of "ok it'll just be for a little while". That little while took 2 weeks a few years.
Nice little product. I am ready!
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Long Vermont Winters
By Vincent Gauthier
Waitsfield, Vermont
Purchased 10/05/2010 |
Review Posted 10/31/2010
Purchased this unit for complete house power when outage occurs. Unit arrived within 4 days of purchase. everything went smoothly in the complete transaction.
Finished installation this afternoon and everything went flawlessly the first time around. Unit seems to handle the whole house with ease. We are on the end of the power line and are one of the last homes to get power restored an outage.
I'm very happy with the ease of installation and would not hesitate to do another in the future.
Finished installation this afternoon and everything went flawlessly the first time around. Unit seems to handle the whole house with ease. We are on the end of the power line and are one of the last homes to get power restored an outage.
I'm very happy with the ease of installation and would not hesitate to do another in the future.
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Peace of mind
By Gary Kluck
Raymond, Nebraska
Purchased 08/22/2010 |
Review Posted 09/12/2010
I purchased the Guardian 20 KW air cooled unit to take over when the utilities are down. Living outside of the city can be challenging in the winter when the power goes out - now I don't have to worry any more !
This unit powers us back up in less than a minute and will cover all of our needs. I bet the neighbors will be jealous the next time the power goes out !
The install took approx 5 days- I poured a concrete platform for the generator and propane tank. The electrician did his thing and the gas man hooked up the fuel line.
My own little power plant.... Now you will understand why I titled this "Peace Of Mind"- No more worries !!!!!
This unit powers us back up in less than a minute and will cover all of our needs. I bet the neighbors will be jealous the next time the power goes out !
The install took approx 5 days- I poured a concrete platform for the generator and propane tank. The electrician did his thing and the gas man hooked up the fuel line.
My own little power plant.... Now you will understand why I titled this "Peace Of Mind"- No more worries !!!!!
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Never a Flooded Basement Again!
By Thomas Keenan
Mansfield, Massachusetts
Purchased 06/23/2010 |
Review Posted 07/15/2010
March of 2010 presented eastern Massachusets with a 200 year rain storm, the largest recorded rain fall ever. We arrived home, after a week's vacation in Ireland, to find that our basement had been flooded. In the next 30 days we were able to install french drains with two heave duty pumps. I discovered that the system could be backed up by battery, but that the pumps would only run for 9 hrs. on their battery back up system which was costly. This storm ran for two days. So I decided that for just a little extra money, I would not use the battery back up for the pumps but rather would use a Whole House Generator.
I now have piece of mind that I will never have another flooded basment again! Additionally, when I go to sell the house, having the ability to tell the potential buyers that I have upgraded the house with a Whole House Generator and that the french drain pumps will work whether the electricity goes out or not is a real plus.
No more sleepless nights worrying about the rising water table. I am covered! Additionally, I have a Mr. Slim airconditioning system that will keep the house cold in the summer and warm in the winter even when the electric company's lines go down.
I can't wait to hear my neighbors when they lose their power and look across the street and see my house all lit up. Priceless!
I now have piece of mind that I will never have another flooded basment again! Additionally, when I go to sell the house, having the ability to tell the potential buyers that I have upgraded the house with a Whole House Generator and that the french drain pumps will work whether the electricity goes out or not is a real plus.
No more sleepless nights worrying about the rising water table. I am covered! Additionally, I have a Mr. Slim airconditioning system that will keep the house cold in the summer and warm in the winter even when the electric company's lines go down.
I can't wait to hear my neighbors when they lose their power and look across the street and see my house all lit up. Priceless!
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Get 'Em Before They're Gone
By Jim Baugher, Product Expert
Bolingbrook, Illinois
Review Posted 05/26/2010
Some people might mistake the headline above as a cheap marketing tactic.
It's actually the bottom line, honest truth.
Generac Power Systems manufactured this 20kW home standby generator system in early 2010
So, why is it called "Centurion by Generac Power Systems" instead of "Generac Guardian"?
Simple. The Guardian Series is primarily manufactured for dealers like us. The Centurion brand, however, is made for a major retailer. We opted to purchase the Centurion brand and launch a super sale on a hot 20kW air-cooled item at hundreds of dollars less than traditional retail pricing. Aside from the marketing and model numbers, the machines are eerily similar. Go ahead and compare for yourself.
At these prices, we don't expect the inventory to last long. When they're gone, the sale is gone too.
Unfortunately, reinforcements are not on the way.
It's actually the bottom line, honest truth.
Generac Power Systems manufactured this 20kW home standby generator system in early 2010
So, why is it called "Centurion by Generac Power Systems" instead of "Generac Guardian"?
Simple. The Guardian Series is primarily manufactured for dealers like us. The Centurion brand, however, is made for a major retailer. We opted to purchase the Centurion brand and launch a super sale on a hot 20kW air-cooled item at hundreds of dollars less than traditional retail pricing. Aside from the marketing and model numbers, the machines are eerily similar. Go ahead and compare for yourself.
At these prices, we don't expect the inventory to last long. When they're gone, the sale is gone too.
Unfortunately, reinforcements are not on the way.
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
How-To Articles
How to Find An In-Stock Generator During a Blackout
Finding an electric generator can be a challenge at times, especially during a ...
How to Size a Home Standby Generator
Put down the calculator! Sizing an essential circuit standby generator is extre...
Electric Generators How-To Library
Articles, Tips and Buying Guides from Our Experts
Manuals
Top Sellers in Category
Currently Viewing
Generac Centuriontrade 5813 20kW Standby Generator System Aluminum Enclosure
%205813%20has%20been%20discontinued.%20Check%20out%20Expert's%20recommended%20alternatives%20for%20another%20top%20standby%20generators%20air-cooled%20generator.&p[images][0]=https%3A%2F%2Fwww.electricgeneratorsdirect.com%2Fproducts-image%2F500%2F5813_500_2.jpg){kind=link}
Ask A Question!
*Required Fields
+
Thank You For Submitting Your Question
Your submission has been sent successfully. Please give our experts up to two business days to respond.
Media Gallery
Generac Centurion™ 5813 - 20kW Standby Generator System (Aluminum Enclosure)
Customer Review Images
