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Guardian 22kW with Whole House Switch

Guardian 22kW with Whole House Switch

Model #6551

Starting At

$4,799.00 MSRP Includes Transfer Switch - Installation, Taxes and Shipping 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

Home Generator Buyer's Guide

Included with This Generator Bundle

Gain up to whole-house coverage through smart power management. If it is unlikely you will turn on every appliance at the same time (most people don’t), a smaller generator paired with a Generac Smart power management transfer switch provides whole-house coverage through a managed power solution. The process is simple - non-essential circuits are shed when the generator approaches maximum capacity to eliminate overload, then are cycled back on when essential circuits are satisfied. Give yourself a little more than just the basics without a substantial increase in your investment.

Download the Spec Sheet

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Rated 5 out of 5 by Our new generator does everything we want it to do. Our new generator does everything we want it to do. There is almost no interaction required on our part. It just automagically kicks on when needed, and we hardly notice it. The installer was very courteous, professional, and efficient. October 15, 2016
Rated 5 out of 5 by Worth the investment! My wife and I had a Generac 22kw Guardian Series Backup generator installed when we built our home 5 years ago. We haven't really needed for any long period of time until Hurricane Matthew. We were without utility power for two days (very fortunate compared to many). Our Generac kept us fully powered and cool for the entire time! October 11, 2016
Rated 5 out of 5 by Works like a champ! Installed our 22kw NG whole home backup generator with transfer switch in July 2016. We were expected to take a direct hit from Hurricane Matthew here in Melbourne, Fl, but instead were spared. Nonetheless, the power went out around 2am and within ten seconds our Generac Generator fired up like a champ. So far it has performed flawlessly and we expect it to continue. We will shut it down as soon as conditions permit to check the oil, and will fire it back up soon after. Well worth the purchase and recommend this generator as part of your significant inclement weather must have. October 7, 2016
Rated 5 out of 5 by A great price for security! I am so excited!! We loose power alot, but now it's such a great feeling of security. I go outside and see the green light and I smile - a small price to pay. October 3, 2016
Rated 5 out of 5 by Easy to use and a real lifesaver The generator kicked on immediately when our power went off. It was only for a short time, but it gives us real piece of mind knowing how quickly and dependably it works. September 20, 2016
Rated 5 out of 5 by Excellent product Mike S. in Washington MI My 22kW whole house generator was installed in September, 2016. I live in an area where the power goes out from time to time. We have a well and with my travel schedule our Generac generator provides me peace of mind they will never be out of power. I would highly recommend this product. The local installing contractor did an excellent job in coordinating all aspects of the project from estimate through final inspection. This was one major project that went very smooth. September 19, 2016
Rated 5 out of 5 by Performed flawlessly We had our Generac 22kw generator installed on Monday August 29, 2016. Hurricane Hermine hit the Florida coast on September 2, 2016. We lost power for 56 hours and the generator performed perfectly. Turned on when it was supposed to, turned off when it was supposed to. We did not miss a beat. Powered the whole house, AC, well pump, electric stove and microwave. We shut it down once to check oil level, full and clean. I would suggest anyone living in a hurricane prone area, particularly in rural areas, to invest in a whole home generator. As I write this there are still thousands without power 4 days after the storm. As long as you have fuel, you have power. September 5, 2016
Rated 5 out of 5 by Excellent product I had this generator installed and the first night we lost electrict power and the Generac kicked on in just a few seconds. I am very happy with the Generac. The company that installed the electrical services were very knowledgeable about the generator and very professional in their insulation. August 22, 2016
  • 2016-10-21 T05:30:09.389-05:00
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Rated 4.9 out of 5 by 66 reviewers.
  • 2016-10-21 T05:30:09.389-05:00
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Generac Stock Ticker

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  • 10/21/2016 4:02 PM EST