Guardian 22kW Home Backup Generator

Starting At

$4,609.00 Transfer Switch, Installation, Taxes and Shipping Not Included Where To Buy Get a Free Quote What is an In-Home Assessment?



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.


Mobile Link™ Remote Monitoring FREE with every Guardian Series Home standby generator 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 maintenance alerts. Connect your account to your authorized service dealer for fast, friendly and proactive service. With Mobile Link, you are taken care of before the next power outage.

5 Year Limited Warranty for automatic standby generators.

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 assembled in the USA*.
*Assembled in the USA using domestic and foreign parts

Quiet-Test™ Self-Test Mode runs at a lower RPM for a five or twelve minute test, making generators significantly quieter than other brands while consuming less fuel.

Generac's G-Force Engine is a 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 competitive engine. Learn more about the G‑Force Engine »

24/7/365 Customer Support Team standing by all day, every day from our headquarters in Wisconsin to answer any questions you might have.

Our RhinoCoat™ powder-coated finish helps make corrosion-resistant aluminum perfect for all weather conditions.

Generac’s Evolution™ Controller features a multilingual LCD display that allows users to monitor battery status and track maintenance intervals to ensure your generator is always in top operating condition.

Home Generator Resources

The purchase of a home backup generator will give you peace of mind for years to come, but it’s a big investment. That is why we want to give you as much information as possible so you can make the right decision based on your needs and budget. The options below will help you understand how the entire process works, what your financing options are, and how to choose the right backup power solution.

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Rated 5 out of 5 by from Generator set up and Installation I Have Been completely Satisfied with this total experience. The waiting for the Permit took longer then it should, but that's not your problem, good old government. The delivery and setup was great. The Installation crew were exceptional. Everything was neatly done and explained it as they were going along. they kept the site clean and left it that way. Mr. Russell came they next day and went thru the setup and operations procedures and then got it up and running. His unique personality and manner made it easy to understand. He took his time to make sure we understood everything.
Date published: 2020-03-27
Rated 5 out of 5 by from Big improvement from 2005 Installed a 2005 13kw upgraded to 15kw unit with 100amp transfer switch and breaker box at previous residence ,was excellent unit ,covered 80% of house for 13 years with frequent outages in mountains. Relocated to another state and just set up 22kw with whole house switch, very nice unit. Glad to see exercise times settings and battery charger issues addressed, looking forward to many more years of service.
Date published: 2020-03-18
Rated 5 out of 5 by from Very pleased. Very happy with my new generator. Provides a lot of peace of mind to know I will never be without power again. Glad I went with the 22kw full house. I was very surprised to learn about all of the features that I didn't realize it had - like the exercise function and wifi. Installation went perfectly - about 4 hrs. Works perfectly.
Date published: 2020-03-18
Rated 4 out of 5 by from Took longer than expected to install. Reading other reviews of 5 days from start to finish is shocking when I was told a 90 day+ time frame. Install was a nightmare with screw ups by the contractors plumber, little to no communication with my propane company was a major inconvenience. It's now up and running and quite honestly I thought it would be a little quiet than it is. But it does what is supposed to do. Will see at the next power outage.
Date published: 2020-03-16
Rated 5 out of 5 by from Does a Great job and is very quiet too. I just got my Generac 22 Kw installed this week. The Dealer did a fantastic job, and from start (set the generator on the pad) to finish (Final City Inspection), it only took 4 straight business days. It was like clockwork with the Electrician, Plumber, Gas Co., and Inspector, one day right after the other. When we did the first Start-up, I was really surprised how quiet the generator was . I thought it would be a lot nosier than it was. I know it won't bother my neighbors when we all lose power in Central Florida during a Hurricane or other event. I am very pleased with my purchase, which I got at a great (and the best) value from my hometown Dealer.
Date published: 2020-03-11
Rated 5 out of 5 by from Great service and great product. We have lost power 4 times in last year. 4 days after installation we returned to the only house on street with lights! Installers did a great job and product works well.
Date published: 2020-03-10
Rated 5 out of 5 by from Quality Very impressed with the quality and set up. Even though the price wasn’t cheap you can never go wrong purchasing from a company that does this everyday
Date published: 2020-03-10
Rated 5 out of 5 by from A quality product Impressed with the quality and self-sufficiency of this product.
Date published: 2020-03-07
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22kW-7043 whole house switch is rated 4.9 out of 5 by 1664.
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