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 5 out of 5 by from Generac in Rural New Brunswick Built my home in summer of 2020, installed the 22kW Generac onto the home and I have never been so happy. Every outage it performed perfectly, every month, it tested perfectly on the 1st. Every time I use the APP to check it or update the maintenance, it’s all good to go. I can’t say enough good things for this product. People, if your just not sure, do it, you won’t be disappointed.
Date published: 2024-02-10
Rated 5 out of 5 by from Long lasting My Generac generator has been terrific for almost 20 years!
Date published: 2024-01-22
Rated 1 out of 5 by from New generac blew oil and then just quit We paid over 10 grand just a year ago for brand new generac. It’s only ran for 5 minutes at a time for its weekly test. We lost power 4 days a go. The generac kicked on and has ran solid. We haven’t used much power. Mostly lights and fridge. This morning, the generac just quit. Went to check it out and it has blown oil out the side. They say our power is still a day, possibly from returning. Called generac and they can’t get anyone here for at least 3 days. I’m very disappointed and sickened that we spent well over 10 grand on this product. I don’t feel at all comforted ,now, for having it for emergency.
Date published: 2024-01-15
Rated 4 out of 5 by from Good Generator; Terrible Customer Support Our independent contractor did a great job coordinating the electrical, gas plumbing, and installation of this generator. But Generac's 24/7 Customer Support is extremely misleading. I've spent over 1.5 hours "on hold" this Saturday trying for help linking the unit to the wi-fi App, and nobody answers. A decent company that charges what Generac charges would either have adequate customer support personnel, or would at least use the option to leave your phone number for them to call you back. This unit should be considered either "self-serve," or "hope your installation company will help you," because Generac is AWOL.
Date published: 2024-01-13
Rated 5 out of 5 by from This product powers the whole house, great features This generator has great features and the installation crew from Holly Electric Inc, Samuel, Matt and Carl did a fantastic job i terrible weather conditions to complete the install and setup. Would highly recommend this product and Holly Electric to anyone wanting whole house coverage in power outages.
Date published: 2024-01-09
Rated 5 out of 5 by from 1 year later - no issues Whole house generator - works great, other than the wifi never would connect - which is not a big deal.
Date published: 2023-12-31
Rated 5 out of 5 by from This product is found to be as advertised by Generac. Installation crew did a commendable job. All participants showed concern for doing the job right. Unit has only been in place for eight weeks now. Have not had a power failure to evaluate its output, but unit has cycled every other week as programmed. Have not attempted to use Wi-Fi feature yet due to so many negative reviews on it. Plan to discuss with technician at six month maintenance.
Date published: 2023-12-22
Rated 5 out of 5 by from great product after the last hurricane august 28, 2023 in Florida we decided to get the generac. We cannot handle the stress of anymore outages at our senior ages. 4 of our neighbors have one also. the installation was very professional. The 3 gentlemen were excellent.....matt Carl Samuel from Lake City Florida . MY husband and I would highly recommend purchasing a generac.
Date published: 2023-12-15
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22kW-7043 whole house switch WiFi-Enabled is rated 4.8 out of 5 by 2047.
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