Guardian 20kW

Guardian 20kW

Model #6730

Starting At

$4,039.00 MSRP Transfer Switch and Installation Not Included Add to My Products

Guardian 20 kW Generator Features and Benefits

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.

Guardian 20 kW Generator <strong>Features and Benefits</strong>

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.

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.

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

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.

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.

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.

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.

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

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.

Mobile Link™ Compatible
Take advantage of Generac’s Mobile Link cellular remote monitoring system and check on your generator’s status using your computer, tablet or smartphone, even when you are away. Sold separately.

Non-cellular remote monitoring options are also available for generator monitoring from inside the home.

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.

5-year Limited Warranty

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Rated 5 out of 5 by 15 seconds and this unit is powering the whole house The few times I have been without electricity, this unit performed flawlessly! June 23, 2016
Rated 5 out of 5 by Not one thing we don't like about it! This is our second generator I wish we would have hot a Generac the first time. I can not find one thing to complain about. Now my father and my sister have gotten one also. We look forward to many worry free years. Great job! June 22, 2016
Rated 5 out of 5 by Best money ever spent This system is by far and away the best investment I've ever made I would Recommend to everyone go big or go home. This thing will run a small city May 5, 2016
Rated 5 out of 5 by Works great! Almost instant transition when the power goes out! When the power goes out, this product click right on and we have power back within seconds. Although we don't have everything connected to it, we have everything we need and forget that the power is off. No complaints! February 26, 2016
Rated 5 out of 5 by Peace of mind I recently had my generator installed with the transfer switch. Luckily I haven't needed it yet, but knowing it is there feels great! January 31, 2016
Rated 5 out of 5 by would recomend this product Had ice storm last February 2015 ran for 96 hours straight had no problems at all I would highly recommend this product. December 25, 2015
Rated 5 out of 5 by Best of any on the market So you are looking for a home backup power source, well after 3 years of research I found the CADILLAC of backup generstors, it is quiet, very reliable, affordable, goodlooking, blends into landscaape and will male your neighbors envious. So do your research and you will come up with the name, GENERAC. December 17, 2015
Rated 5 out of 5 by LMG. Love My Generac!! Having my Generac installed was the smartest move I have ever made. I never have to worry about losing my power. No more worries that the power may go out when I am not home. The peace of mind I have is a wonderful thing. If you are think gin of getting one. DO IT you will not regret it December 17, 2015
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Rated 4.8 out of 5 by 271 reviewers.
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The Generac Promise


Peace of mind.

And the power to live.

The Generac Promise means that our 8 – 22 kilowatt Guardian® Series home backup generators will give you peace of mind and the power to live. It means that we engineer and build them here in America*. It means we stand behind them with a strong 5-year limited warranty. We promise to continue to innovate, like with our new Mobile Link™ cellular monitoring system, so you’ll know the status of your generator, no matter where you are. And if you ever need to call, we’re standing by 24/7, every minute of every day, ready to pick up the phone right here in Wisconsin.

*Built in the USA using domestic and foreign parts.

We’ll back you up. We’re standing by. Count on it.

Generac Stock Ticker

  • NYQ
  • GNRC
  • $34.62
  • 6/24/2016 4:04 PM EST