Generac Guardian Series Automatic Generator

2017 Guardian 3-Phase 20kW Generator

One of the most powerful air-cooled generators on the market today, the Guardian Series 3-Phase 20 kW Standby Generator can provide backup power for many homes and businesses.

Have questions for our team of Generac Specialists? Find the right Generac Automatic Standby Generator to power YOUR home or business!


Features & Benefits

True Power™ Technology delivers best-in-class power quality with less than 5 percent total harmonic distortion for clean, smooth operation of sensitive electronics and appliances.

Generac generators and engines are engineered and built in the USA*.
*Assembled in the USA using domestic and foreign parts

Generac’s G-Force Engine are purpose-built, pressure-lubricated engine capable of handling the rigors of generator use, resulting in power that’s more reliable and requires less routine maintenance than any other competitor.

Durable powder-coat finish helps make the sturdy, galvanneal steel enclosure perfect for all weather conditions

Smart, User-Friendly Controls  Generac’s Evolution™ Controller features a dual-line, multilingual LCD display allowing for easy monitoring of history, maintenance logs making it easier to manage your generator.

Mobile Link™ Remote Monitoring allows you to monitor the status of your generator from anywhere in the world using a smartphone, tablet, or PC. Easily access information, such as the current operating status and the generator’s maintenance schedule. Connect your account to your authorized service dealer for fast, friendly and convenient assistance. (sold separately)



20 kW

Voltage (Single Phase)
Amps @ 208V LPG
Amps @ 208V NG
Engine / Alternator RPM
Generac G-Force
Engine Displacement
Fuel Consumption @ Full Load NG cu. ft/hr
Fuel Consumption @ Full Load LPG cu. ft/hr (gal/hr)
130 (3.56)
Quiet-Test Mode
db(A) @ Normal Operating Load
Dimensions (L” x W” x H”)
48 x 25 x 29

Helpful Resources

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Frequently Asked Questions

How Does a Home Backup Generator Work?

It starts and stops automatically, and never needs refueling. This video explains how and why.

Generac Power Systems Commercial Generator

Commercial Generator how it works. The transfer switch. Keep your business open during a power loss.

How Can You Take Control of Your Power?

Our lives depend on power more and more every day. Learn how to take control of your power and never be left in the dark again.

Generating Power for Your Life

YOU and your backup power needs are unique and different from anyone else. With Hale’s, you have the advantage of a dealer whose only business is Generac Generators.