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The generac Centurion™ 5538 - 16kw essential circuit standby generator system (aluminum enclosure) has been discontinued and is not available for purchase at this time.

Generac Centurion™ 5538 - 16kW Essential Circuit Standby Generator System (Aluminum Enclosure)

(Based on expert analysis, manufacturer ratings and customer reviews)
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5
4 Reviews
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Airooled Standby Generators
16 kW
Rated Watts
100-Amp Indoor Automatic Transfer Switch w/ 16 Circuits Included
Pre-wired External Connection Box
30' Pre-Wired Conduit From Transfer Switch To Generator
2' Pre-Wired Conduit From Transfer Switch To Main Panel
Composite Mounting Pad

Emergency Standby Power Generator
Designed for homes
Runs off natural gas or LP fuel source

Whisper-Test™ low speed exercise mode
Reduces sound level from 66 to 60 d(B)A during weekly exercise

Generac OHVI V-TWIN Air-Cooled Engine
Maximizes engine “breathing” for increased fuel efficiency

Two Line LCD Digital Controller
Allows for simple user interface for ease of operation

Automatic Exerciser
Allows generator to run a self-test every 7 days

Weather Protected Aluminum Enclosure
Shelters generator from weather and reduces exterior noise

Built-in Battery Charger
Battery Sold Separately
  Model Number:5538
 Made in USA:Yes
 HP/CC:32 HP/992 cc
 Consumer Engine Warranty:3 Years
 Commercial Engine Warranty:3 Years
 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 Capacity16,000 Watts
 LP Power Capacity16,000 Watts
 NG Consumption (50% Load)183 ft³/hr (BTU: 183,000 BTU/HR)
 LP Consumption (50% Load)1.59 gallons/hr (BTU: 144,293 BTU/HR)
 Rated Amps:67 Amps @ 240 Volts (Single Phase)
 Decibel Rating @ 7m:66 db(A)
 A/C Ton Rating5-Tons
 Mounting PadComposite (Included)
 Transfer Switch:Automatic (Included)
 Transfer Switch Amperage:100-Amps
 Transfer Switch StylePre-Wired (16-Circuit)
 ATS Service Disconnect:No
 ATS Poles:2 Poles
 ATS Load Shedding:Not Compatible
 ATS Load Prioritizing:Not Compatible
 Transfer Switch Circuits:5  - 15A/120V
5  - 20A/120V
1  - 20A/240V
1  - 50A/240V
1  - 40A/240V
 Battery:Not Included (525 CCA)
 UL ListedYes
 Weight:535 Lbs. (242.68 kilograms)
 Dimensions:48L x 25W x 29H
(121.92 x 63.50 x 73.66 cm)
 Consumer Warranty:3 Years
 Commercial Warranty:3 Years

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Read Reviews
  1 Question
Q: I am widowed - need a reliable, easy to use alternate system for emergeny power. Have 100 gal propane tank, is this large enough. Does unit set outside? Is installation difficult/
by Marie Dye from Virginia on June 30, 2012

A: These units are a great choice for a back-up power system as they start automatically without any assistance from you.

A 100 Gallon tank will not provide sufficient back-up fuel supply for emergency situations and recommend either its own tank or a larger 200 Gallon tank.

Installation is not too difficult on these units as the essential circuit models are prewired for ease of installation.

Please keep in mind that a certified electrician or local Generac technician should install any home standby system as they will be familiar with all of your local city, county and state codes.

by Mike, Product Expert

Centurion 5538 Reviews & Ratings
4 Reviews  Sort by 
Oxford, MS
Purchased from Electric Generators Direct
Purchased 1/6/12
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Product - Outstanding Service
The standby generator by Generac is my second one to purchase and everything is just as promised. A very good product for an excellent price. The service during the sale and delivery was exactly as advertised. For a service business, you guys certainly understand the importance of delivering all services just as promised. This is greatly appreciated in today's environment of most businesses not meeting expectations. You exceeded mine once again.
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South Bend, IN
5 out of 55 out of 55 out of 55 out of 55 out of 5
Excellent Choice
I purchased this unit in September and had it professionally installed. The shipper used a dolly to place the unit just where I wanted it, so there was no worry about moving this heavy unit at the time of delivery.

The only problem during the installation was that the insulation on the top lid of the unit was too thick and interfered with the switch (the switch kept turning on and off). Removal of some excess insulation solved the problem. The unit runs in test mode for ten minutes each... more
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Joe Craigo
Liberty, WV
Purchased from Electric Generators Direct
Purchased 11/1/10
5 out of 55 out of 55 out of 55 out of 55 out of 5
Love My Generac
I live out in rural West Virginia. We have VERY BAD Service in regards to Power Outages.
I have only had my 16kw generator for a couple weeks and it has already been all I expected it to be.

Had NO problems with installation. I already had installed a Smart Switch disconnect so I did not use the supplied transfer switch.
All I need was the "battery" charger from it. All else was simple connections.

Unit works wonderfully and I would highly recommend it to anyone. It is... more
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Francis L.
Clayton, DE
Purchased from Electric Generators Direct
Purchased 8/20/10
4 out of 54 out of 54 out of 54 out of 54 out of 5
Still Not Hooked Up
Generator arrived as promised, less than 2 weeks after ordering, price dropped $300.00 but I was not offered any refund. Email correspondence did state that I could return mine, purchase a new one at the lower price but I would have to pay the return shipping. Sounds quite lame, a simple refund maybe half would have made me a little happier.

Did not expect the expenses for hookup to be so much, new gas line and regulators are $1400, don't have the estimate for the electric yet. Some... more
Mike, the Generator Expert
Product Expert
As we explained, the rebate is funded by Generac, and applies only to units shipped within a specific time period. We are sorry, but since your unit shipped before the rebate date Generac says it is not eligible.

There are 5 Generac warranty service locations within 10 miles of your zip code; we suggest calling to find one which may give you better service: Schagrin Gas 302-378-2000; CMI Electric 302-731-5556, Connected Power Systems 302-293-2339, Cahill Electric 302-378-9650, Pace Electric 302-376-1357, and CPR Electric 410-885-2760.

Should you need Generac's assistance, they can be reached (toll free) at (888) 436-3722.
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Shop for the Generac Centurion™ 5538 - 16kW Essential Circuit Standby Generator System (Aluminum Enclosure) at Electric Generators Direct. Research Centurion standby air-cooled generators online. Find Centurion 5538 standby air-cooled generators & Centurian 16KW Aluminum liquid propane and natural gas operated generator system features and specifications.