Guardian 22kW

Guardian 22kW

Model #6552

Starting At

$4,289.00 MSRP Transfer Switch and Installation Not Included Add to My Products

Guardian 22 kW Generator Features and Benefits

The 22 kW Guardian® Series home standby generator is the largest air-cooled home standby generator on the market. Not only does it deliver all the features and functionality customers have come to expect from the market-leading brand of home standby generators, but with an MSRP that is the lowest cost per kilowatt of any air-cooled home standby generator. Provides whole house coverage for many homes.

Guardian 22 kW Generator <strong>Features and Benefits</strong>

Lowest Cost Per Kilowatt
Homeowners can invest in a home standby air-cooled generator size that used to only be available in much more expensive, liquid-cooled models, giving them the lowest cost per kilowatt available.

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 pre-wired transfer switch or 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 22 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 22 kW generator can operate on natural gas pressures of only 3.5” of water column.

All-Weather Aluminum Enclosure
Our durable powder-coat finish helps make the sturdy, all-weather aluminum enclosure corrosion resistant, making it ideal for coastal, salt-air climates. 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 Extremely quiet - functions perfectly After losing power for the 4th time this summer, I bit the bullet and installed this generator. I am embarrassed to say it took me this long - it is a real life saver. With a 1 yr old toddler running around the house, I feel so much better knowing that we'll have continuous power during the heat of the summer and cold of the winter. It runs very quietly, you can't even tell it's on - except when you get the alert on your iPhone when you get the attachment that connects to the cloud for notifications. Really cool that it alerts me every week when it starts it's test and when it finishes. Very happy with the product. October 1, 2014
Rated 5 out of 5 by Peace of Mind / Security Provided Power in our area goes out several times a year. We've had to check into a hotel foe days at a time, plus the added cost of lost food in the refrigerator & freezer. in addition our major concern is that our Alarm system's back up battery is only good for 24 hours - thus when the power is out over 24 hours our alarm system doesn't work. For all these reasons we decided to have a Generac standby generator installed. Two days after it was installed our power went out - but only for a few seconds for us because we had the Generac - Our neighbors were without power for hours. It works very well, looks good and provides that peace of mind we were looking for - Thanks Generac. October 1, 2014
Rated 5 out of 5 by Attractive, relatively quiet, convenient It means everything to me, living alone and a senior, to have the peace of mind from this unit. I spent a lot of time last winter alone in the dark and cold and uncertain of the future during several lengthy power outages. I decided I never wanted to go through that again. On another person's recommendation, I called Generac and told them I knew nothing and needed a lot of information. They couldn't have been more helpful. Everything was handled with utmost professionalism. In short, it is worth every penny to never have to live without power and water again. October 1, 2014
Rated 5 out of 5 by Peace of mind! A whole house generator is truly a purchase that relieves the stress of what will happen when power is disrupted. April 12, 2016
Rated 5 out of 5 by Praises for Generac I purchased my generac in 2012 after a tropical storm put me out of power for several days. Now that I am retired, being without power stressed me out. So I called my local generac dealer and purchased a whole house generator. The peace of mind I have when a tropical storm threatens is absolutely wonderful. I have lost power on 2-3 occasions for several hours. The unit didn't miss a beat. Thank you generac! April 8, 2016
Rated 4 out of 5 by waited too long to buy it had the first black out and generator started in 5 seconds. It was a great feeling when all around me power was out except for us. The black out stress left in seconds. April 7, 2016
Rated 5 out of 5 by Best on the Market!! After meticulously reviewing each generator manufacture I concluded that Generac had the absolute best product on the market. I purchased a 22kw standby generator for my whole house coverage. The 22kw model is the largest air cooled model and also uses less fuel consumption due to its variable engine speed. I found that most other manufacturers simply turned on and off, not adjusting to the power demand. I also installed Power Managment Modules on larger items such as my pool and hot tub so they could be automatically shed if power needed to be provided for a more important item preventing the generator from being overloaded. The piece of mind alone is well worth the purchase, I'm actually looking forward to an outage instead of dreading one! Oh and if the power does go out, the generator will e-mail and text me notifying that generator has been activated. It literally does it all!!! BUY ONE NOW, you'll thank me later! April 6, 2016
Rated 5 out of 5 by Secure & Confident in SE Texas Home Since the installation of our Guardian 22kw Generac generator on February the 15th, my entire family, including all 7 Grandchildren, have a sense of security & peace-of-mind in our Gulf Coast SE Texas (Hurricane central) home. Each Tuesday morning at 10 o'clock when my generator turns on for it's "test run", my wife & I smile & feel confident that we made the right decision when we purchased our Generac Standby Generator. March 3, 2016
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Rated 4.9 out of 5 by 62 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
  • $37.70
  • 5/27/2016 4:02 PM EST