Guardian 20 KW Generator Spec Sheet

One of the most powerful air-cooled generators on the market today, the Guardian Series 20 kW automatic home standby generator can provide whole-house backup power for many homes.

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Generac OHVI® Engine

Your Guardian Series generator might have to get you through days—or weeks—without utility power. Generac’s OHVI® engine, specifically designed for generator use, provides the reliability to power through the most severe outages.

All-Weather Steel Enclosure

Our durable powder-coat finish helps make the sturdy, Galvanneal steel enclosure perfect for all weather conditions. It’s also able to withstand 150 mph winds.

True Power™ Technology

Best-in-class power quality with less than 5% total harmonic distortion means clean, smooth operation of your sensitive electronics and appliances.

Tool-less Fuel Conversion

Switch between natural gas and LP fuel in the field in a few seconds, without the need for any tools.

Evolution™ Controller

The next generation of intuitive controllers featuring a multilingual, two-line LCD text display with color-coded, backlit buttons.

Quiet-Test™ Mode

All standby generators run a weekly test to ensure the system is running properly. Thanks to Quiet-Test, your Guardian Series home standby generator runs its self-test at a lower, quieter RPM than standard operation, and can be programmed to run weekly, bi-weekly, or monthly.

Certified for 18″ Installation to the Home

Third-party certified to NFPA standards to be installed as close as 18” from the home’s exterior wall, provided it is located away from doors, windows, and fresh-air intakes, and unless otherwise directed by local codes.

OmniMetrix Remote Monitoring

We are now offering remote monitoring of generators that allows us to see the status of your unit 24 hours a day, seven days a week, every day of the year. If there’s a problem, the remote will alert us so we can be proactive, instead of waiting for you to call us.

Easy Installation

When combined with a Smart Switch, re-engineered connection points, and composite mounting pad that eliminates the need for a poured concrete base (unless specified by local codes), the Guardian Series 20 kW generator is easy to install.

24/7/365 Customer Support

Power outages don’t always occur during normal working hours. That’s why Generac’s customer care call center—right here in Wisconsin—provides support any time of day or night, all year long. Generac is standing by 24/7, every minute of every day, to answer your questions.

Rated for Operation in Areas with Low Natural Gas Pressure

In areas with low natural gas pressure, the Guardian Series 20kW generator can operate on natural gas pressures of only 3.5” of water column.

5-year Limited Warranty