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 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
Rated 5 out of 5 by from Put the test! We have had our generator for 2 years now. Installed when we built our 5200 sq ft house. It's only been needed for a few small outages lasting no more than an hour. Well, far East TX here had a massive wind storm rip through our area overnight, causing over 200k people to be without electricity for days. A good portion have been restored. We haven't been so lucky because we are so rural. Not to mention upper 90 degree temps, with 99% humidity, and feels like temps over 110 daily! With that being said, we are on day 6 (of many more) of running our Generac. Only shutting it down every 24 hours to cool and check fluids. Now for the goods! It is running 2 HVAC systems, sub zero double fridge, 4 chest freezers, 2 stand up freezers, and 6 ceiling fans consistantly. Not only that, but we can use the microwave, blow dryer, water heater, dishwasher, washer, dryer, ceiling lights, and many more things without it bogging down. Of the two years we have owned this, I am more than impressed, and very thankful we chose to install this on our home. Thank you for creating such a wonderful product!
Date published: 2023-06-21
Rated 1 out of 5 by from Failed 2 times in a year I had this installed by my contractor during a new house build. I didn’t choose this product but heard Generac was a good product. It has broken down once in April due to a faulty Alternator missing a nut from the factory causing it to short out circuits and it failed. And again, now that the heat index is 104. Our power will not be on for at least a week. It has failed again, yep the alternator. Under powering the house. I will not recommend this product based on my experience. My technician came out Friday and blamed it on low propane pressure. We had 25% in our tank left. We put 100 gallons in it and it still threw the same error. Then he said he would not be able to come back until Monday leaving us without any power all weekend. Gee thanks a lot. Like I said, if he would’ve checked it thoroughly Friday, my now ordered part, is coming in 3 days from now! Guess what? it’s supposed to rain this week. I bet he won’t be able to put the alternator on if it’s raining. We don’t have hot water. We have a gas generator, a window unit, and are spending $3.20 a gallon per 4 2 gallons a can daily on gas. Thanks a lot Generac.
Date published: 2023-06-19
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22kW-7043 whole house switch WiFi-Enabled is rated 4.8 out of 5 by 2031.
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