Guardian 22kW Home Backup Generator

Model #7042
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$4,359.00 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.


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 built 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.

Mobile Link™ Remote Monitoring 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 the generator’s maintenance schedule. Connect your account to your authorized service dealer for fast, friendly and convenient assistance. (sold separately)

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 Delighted to have peace of mind for Hurricane season Our local dealer, Long’s Air Conditioning of Avon Park, Florida, is well known for superior service, excellence in customer service and expert installation. After 10 days without power following Hurricane Irma, we made the decision to finance a Generac installation and got on their install list. We were willing to wait for the quality of their work and the superior product offered by Generac. The owner, Kenny Long, and his team arrived just after 7:00 a.m. and by noon our system was installed and every piece of sod replaced, every bit of dirt cleaned off and we were up and running. The peace of mind is well worth the expense as the head of our household is a First Responder with Emergency Mgmt. and will be on duty during major storms. We will be ready next Hurricane season!!
Date published: 2018-10-17
Rated 5 out of 5 by from I Trust My Electrician, and My Electrician Trusts Generac Our electrician - a true perfectionist, and among the most honorable men we've ever met - has installed hundreds of whole-house generators, and won't recommend anything other than a Generac. He swears by their reliability, quality electrical components, sturdy and rust-free enclosures, durable engines, and the clean current they provide. During installation, he opened the generator and pointed out all the elements of Generac's thoughtful, maintenance-friendly design. All in all, it's obvious why Generac is the dominant player in whole-house generators.
Date published: 2018-10-17
Rated 5 out of 5 by from Great product, features and pricing. Love my new GENERAC 22 K, quiet, Great quality, great price and after 5 days now have whole house power.Every home needs one!
Date published: 2018-10-17
Rated 5 out of 5 by from Hurricaine Ready Our part of the country gets plenty of storms that can leave the area without power for hours or days. We decided we were tired of getting gas for the portable generator. This whole home generator is much safer and 1000 times more convenient.
Date published: 2018-10-16
Rated 5 out of 5 by from The generator works Love my new 22KW/999 generator! The first week it was installed I got to put it to use! A squirrel blew the transfer switch for our neighborhoods power! I was in the shower at the time and when the lights went out I thought oh no! But 10 seconds and I had power! The rest of the neighbors were out of power for 5 hours! Generator did it’s job!
Date published: 2018-10-16
Rated 5 out of 5 by from Nice unit This is our first generator and very pleased with all aspects of it, from the buying process to installation. You can't put a price on piece of mind with electrical outages. Our dealer has been with us every step of the way with answering questions and being honest and upfront. We're very happy with our Generac generator!
Date published: 2018-10-15
Rated 5 out of 5 by from Power peace of Mind Finally have power peace of mine with the startup of a 22KW whole house generator. No more hassle of a portable generator with limited power and worrying about getting gasoline to keep it going. The generator has clean lines, and the wifi provides monitoring through our generac dealer. My only regret was not doing it sooner. Feel good about protecting my home and family from mother nature. With lots of generacs in our neighborhood feel good about selecting a proven, quality, reliable power solution.
Date published: 2018-10-14
Rated 5 out of 5 by from Sharp looking unit Unit has nice clean lines , not an eye sore in the back yard. Th 22 K unit provides all the power I need to run my entire house. Installation & step by step startup made the process very simple. Great investment for any upcoming storms / power outages.
Date published: 2018-10-13
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22kW-7043 whole house switch is rated 4.9 out of 5 by 1362.
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