Guardian 22kW Home Backup Generator

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$5,499.00 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

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 Great Product! We purchased our generator so we wouldn't have any hassles during power outages. Everything works great and looks great. It's so nice to have that peace of mind knowing my home will function normally.
Date published: 2022-08-11
Rated 5 out of 5 by from Excellent Service, Looks Good, and Runs Great. We added this 22kw unit when we built an addition on the house. No more running drop cords or dealing with the issues of running a portable generator. This unit runs the entire house during a power outage, automatically. The Mobile Link feature also keeps me informed of it's operation no matter where I am. Highly recommend this product!
Date published: 2022-08-10
Rated 5 out of 5 by from Very satisfied Northeast installation very professional installers Everything went smoothly including the instructional
Date published: 2022-08-05
Rated 3 out of 5 by from If I had it to do over again, I wouldn’t Recently had 22k generator installed. Has yet to run like it is supposed to. Three repairs, one new circuit board and a replacement battery. Two visits to rewire. And, it took more than a year to get finished. Had to remind installer to request building permits approval twice. And, to top it off, Generac charges $50 a year for their app to monitor if it is working. Would not recommend this company! To say I’m disappointed is an understatement!
Date published: 2022-07-26
Rated 3 out of 5 by from Came defective Brand new unit had defective circuit board and transfer switch had defective wiring harness.
Date published: 2022-07-21
Rated 3 out of 5 by from Why does a 180 amp generator have 100 amp breaker We installed this product, waiting for final startup. The generator has a 100 amp breaker yet is sold as a 22kw whole house backup. Granted that we probably don't peak over 100 amps very often but I was not clear that the product was limiting itself.
Date published: 2022-07-11
Rated 3 out of 5 by from First time power went out, it ran for 2 minutes then quit My 22kW Generac generator was installed by the Generac Authorized Dealer that I found on this website in September 2021. On May 5, 2022 the power went out for the first time. In about a minute my generator kicked on and I was reassured about my $18,000 investment for my family's piece of mind. That piece of mind lasted about 2 minutes until the generator suddenly shut down and I got a "E2098 Stopped Alarm wiring Error" and generator required service to correct. Until July 9, 2022, I assumed correcting this error was covered under the touted limited warranty since the unit was only 8 months old at the time...but I just got a bill, from the same Generac Authorized Dealer who installed this, to fix an error after TWO minutes of providing promised protection (thats what prompted me to write this review) Now, after ~10 months in use, and this product failing the only time I depended on it...I question it's ability to provide reliable back up power for any portion of my home. Finally, my generator arrived without the Wi-Fi, thus I can't use the phone app that looked so cool in the commercials. My dealer assured me that once my generator was fully installed and registered, Generac would ship the Wi-Fi to the installation address...10 months later no Wi-Fi, just another broken promise. P.S. I just read the T&C and they can refuse to post any review they want, so really curious if my honest review makes it here.
Date published: 2022-07-09
Rated 5 out of 5 by from Awesome peace of mind! T&M Services did a great job! I am so happy with Generac at this point. You keep improving and making them better. Ya, it is not cheap, but trust me, worth every penny. I was without power for 6 days in TN due to an ice storm. Never again! I wonder about the countries infrastructure and fear this may be more common than it was in the past. I don't need to think about it anymore. I'm not trying to scare anyone, it was just a choice that was right for me. Generac is an amazing product and I am really happy about it. The wifi connection and ease of how it works. Automatic, you don't have to do anything. I have a portable generator that helped me get by, forget that now! Go for it!!
Date published: 2022-07-01
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22kW-7043 whole house switch WiFi-Enabled is rated 4.9 out of 5 by 1962.
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