Guardian 22kW Home Backup Generator

Starting At

$6,279.00 MSRP Includes Transfer Switch - Installation, Taxes and Shipping Not Included Where To Buy Get a Free Quote What is an In-Home Assessment?



One of the most powerful air-cooled generators on the market today, the Guardian® Series 22 kW automatic home standby generator can provide whole-house backup power for many homes. 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.


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. Learn more about Mobile Link

Up to whole house protection with the 200-amp, NEMA 3R (aluminum outdoor enclosure) smart switch.

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

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 »

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.

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 1 out of 5 by from Terrible generator warranty Two year old generator. Controller failed last week while doing the recommended firmware update. Part is covered under warranty. Electrician diagnostic charge and installing the controller is not. Just had to fork out $250. for a two year old Generac 22k unit.
Date published: 2023-09-27
Rated 5 out of 5 by from Quick and easy process Kudos to all involved in our generator installation. From Mike who initially came to our home and got the ball rolling to Ann who kept us apprised of the process as things progressed then checked on us after the installation to Mike and AAron who actually installed the generator. Special thanks to Mike and Aaron who worked in very hot and humid conditions. We could not be happier with the ease of the process and the quality of all the individuals we interacted with. Thanks to all!!!
Date published: 2023-09-25
Rated 2 out of 5 by from Bad quality control A brand new generator should not leak oil. Should not come with mangled wire terminals. Should not have cross threaded screws. Should not have loose screws. Should not have large internal scratches.
Date published: 2023-09-10
Rated 2 out of 5 by from Junk Less than 2 years old still under warranty and has not worked in 3 months. Every time service tech comes it’s not covered and still not working. Last year during hurricane it stopped working and last 3 months still not working, but cost me over a thousand $$$ for service calls - new battery& cables -circuit board due to a lizard ( how -isn’t transfer panel weather tight ) engine lifter’s adjustment. Why does it take 2 weeks for parts
Date published: 2023-09-06
Rated 5 out of 5 by from Generac Installation Installation team was exceptional. They were friendly and professional. The installation was completed expediently. The installers tested the unit under full load and it worked great.
Date published: 2023-08-03
Rated 4 out of 5 by from keeps throwing error codes i have my generator on a maintenance schedule my technician does not whats causing the error.About once a week i have to clear the code. the code is rpm loss. can you help with the problem? Thanks Willie
Date published: 2023-07-24
Rated 1 out of 5 by from Finding manual and registration of products Seams to be a good item, however support stinks. I tried to download manual and spent over half an hour searching for it and came up with nothing. Tried by serial number and by model number. If you want to see complicated, go to Generac web site Do not bother to try to register the generator. Tried to, and after over an hour seeing Processing Please Wait on the screen I gave up
Date published: 2023-07-22
Rated 1 out of 5 by from Boat anchor Generator has not worked properly since it was bought in 2019. We have had 7 so called tecs, working on it and the only thing they do is hand us a bill. The only thing theyknow how to do is change the easy parts, not a one knows how to analize the generator and pin point the problem. When ever the temps go above 70 deg. the red light comes on and a1505 code is shown. The same code comes up every time after it runs a weekly exercise.
Date published: 2023-07-19
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22kW-7043 whole house switch WiFi-Enabled is rated 4.8 out of 5 by 2033.
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