Guardian 22kW Home Backup Generator

Model #7042
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$4,509.00 Transfer Switch, Installation, Taxes and Shipping Not Included Where To Buy Get a FREE
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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 So far, so good Just had the startup service yesterday. Install company was great! Tested twice with no issues.
Date published: 2019-03-13
Rated 5 out of 5 by from Whole home coverage with peace of mind security. With frequent electric outings, the General 22kw does provide peace of mind when it comes ensuring your power source. Wether it’s backing up power for a sump pump to keep your basement dry or even power for your medical devices, rest assured you’ll be comfortable in your home in any case. I highly recommend the Generac Generators.
Date published: 2019-03-12
Rated 5 out of 5 by from Good features, good value The generator installation was just finished, the installer did a great job but I had already contracted with him not knowing he was not on Generacs 'list'. So, unfortunately, I did not get the Generac 'special' $895 7-year warranty. I am very disappointed with Generac in that respect but the generator should provide me with piece of mind for years to come.
Date published: 2019-03-11
Rated 5 out of 5 by from This product satisfies all my power needs I am very pleased with the quality of construction, functionality, features, appearance and dependability of this product. As a home owner and retired general contractor who received installation certification on Generac several years ago, I already knew before purchasing this product that it would thoroughly satisfy my expectations for quality and dependability.
Date published: 2019-03-10
Rated 1 out of 5 by from Large expensive eye sore. Had this unit installed back in June of 2018 the first opertuniry for the system to run was a complete failure in the transfer switch causing a arc. Found to be a factory issue. Had to have that fixed along with a new controller. So power goes out this morning and the unit fails to respond and shuts off. So back to calling for service. This unit is not reliable to work in auto. More service call time than run time. I would not recommend unless you enjoy dealing with service calls but the company sends me extended warranty info instead of taking care of my lemon of a product. I would do my homework. There is no way I could recommend this generator I just would like to have faith it will work when I need it to come on.
Date published: 2019-03-10
Rated 5 out of 5 by from ABSOLUTELY AWESOME! I live way out in the sticks so when the power goes out, we are the last ones to get the power restored. I have the 22KW whole home system. This is the best investment I’ve ever made, by far! Our power goes out a few times a year and sometimes it’s out for 7 or more days. About 2 weeks ago, we were hit with high winds and thousands if people were without power, but NOT US! The outage lasted for 6 days and we never knew it was off in the first place. When the power goes out, it takes the generator 20 seconds to start up and it never shuts off until the power is restored. In those 6 days, it used 105 gallons of natural gas, but it was worth every single penny. If you’re thinking about buying one, just do it. I promise, you won’t regret it!!
Date published: 2019-03-10
Rated 5 out of 5 by from Voice of the customer. Date- 03/08/19. Our technicians- josh N, Howie, Mike, Bill. We’re amazing. they were kind and quick. They answered all our questions. We were very happy with there job. Job#HD903084.
Date published: 2019-03-09
Rated 4 out of 5 by from Too Soon To Know. We have the 22KW; It's too soon to know how it will do until our next hurricane. The installation was difficult as I am in a flood zone. The electric contractor was very good, and I had already contracted with him, not knowing he was not on Generacs 'list'. So I was not able to get the Generac heavily-advertised 'special' $895 value 7-year warranty. I am very disappointed with Generac in that respect. The generator is louder than I expected, but then I was hoping I could hear that it was running from inside the house; there is NO problem hearing it, and it is 30+ feet from the bedroom, but I doubt I'll be able to hear it over the noise from a hurricane!
Date published: 2019-03-08
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22kW-7043 whole house switch is rated 4.9 out of 5 by 1454.
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