Guardian 22kW Home Backup Generator

Starting At

$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 Whole House System - Metro Electric Metro Electric out of Romeo, MI installed our Whole House System and did a Wonderful job from Quote to finish. Recommend them highly. Detroit Edison power is finicky, we lose power several times a year and with freezers and a Sump Pump we grimace whenever the wind blows. We had four brownouts\power losses this year, now Bring It On! We feel much better having this, saved for 12 years to buy this system.
Date published: 2022-11-18
Rated 5 out of 5 by from Peace of Mind for Homeowners We lived and worked in Afghanistan for almost a decade and experienced the "norm" of needing backup power generation. With Hurricanes, Ice Storms, and concerns about rolling blackouts from unstable utilities, the concept of NOT having backup power was foolish. We studied the problem and solutions for nearly 90 days before we arrived at the best solution, which was a Whole House Generator from Generac. The price was great, the quality of manufacturing (in the USA) was exceptional, and the unit works exactly as expected from the very first power loss test. Having worked with HUGE commercial diesel generators, we were also pleased with the sound level, and low carbon footprint from the Natural Gas supply. Now we can rest knowing we are covered in an emergency - and I love the 900 CC Engine (reminds me of my last motorcycle). If you are a "Prepper" - this is your unit. Also, if you are a Veteran, make sure to purchase through Home Depot or Lowes, (or) wherever you can get your GI discount! I am not sure if Generac will post my contact information, but I can give you a step-by-step on the install process along with some suggestions to help ensure you are installed, "On-time, to Specifications, and In Budget." (PMI Project Management framework.)
Date published: 2022-10-27
Rated 5 out of 5 by from Peace of mind Dealer was very helpful in helping me select the proper unit for my needs. Install seemed to go well and unit works as designed.
Date published: 2022-10-15
Rated 4 out of 5 by from This product has great features. Haven't had to use it. Hopefully, it will work well.
Date published: 2022-10-10
Rated 5 out of 5 by from Excellent Features Recently had the whole house generator installed. The employees doing the install were great and very knowledgeable. I did lose power about a week later for a short time and the generator came on exactly as it should. Would recommend this generator and Metro Electric to anyone in the market.
Date published: 2022-10-05
Rated 5 out of 5 by from Excellent performance but uses A LOT of oil Had unit installed May 2018 so we would have A/C in the event of a hurricane related power outage similar to outage during Hurricane Irma in 2017 when we were 5 days without power. As of June 2022 annual service the unit had only 25.5 hrs on meter. So until September 28, 2022 when Hurricane Ian hit and we lost power we had no experience with extended run time. Owner's manual indicated need to check oil frequently as it might need oil added. I had assumed after June 2022 service the unit would have enough oil to run safely for a minimum of 24 hours without getting a low oil warning. Due to the rain and wind it was not possible check the oil and at 27 hrs (9/29/22) the unit stopped under low oil warning. I had only 2 quarts of the required oil. A check 12 hrs later indicated it had gone through a quart so I had to reduce load until I could get more oil on 9/30/22. I was not pleased that after 39 hr run time I had to severely reduce the load and go without A/C- the main reason I bought the unit for. The owner's manual NEEDS to indicate the potential amount the generator may use during 12 hr continuous usage so people have an appropriate amount of oil on hand. I had no idea the unit would use 2 quarts a day. In the future I will have at least 10 quarts of oil on hand. Other than this annoying lesson learned I am happy with the unit.
Date published: 2022-10-04
Rated 5 out of 5 by from The shipping company delivered the generator 3 days earlier than agreed, The shipping company agreed to deliver 3 October 2022, but it was delivered 1 Oct 2022.. no one was available to sign or even knew it was delivered, it was found after returning home from the weekend. All looked good, except for three 5/16 nuts and two small nuts from the hinge anchor laying in the bottom of the generator. The Hinge bolted back easily, but the 5/16 nuts are from the anchors through the black plastic deck... so the Generator is being held in place by the bolts merely sitting in the holes? I have installed many of these same units in Other homes, this is my personal Unit. We had this similar trouble back in the beginning of Covid, Maybe the trained factory employees did not build this unit, like back in 2020? Tech 8004381 Larry Troutman
Date published: 2022-10-03
Rated 5 out of 5 by from Thomas Electric Installation Mansfield OH A quick word about thomas electric. If you looking to have a whole house generator installed, these are the folks to do it. While they might be a little pricey, they are without doubt the very bet people to install these units. They arrived exactly on time with a 4-man crew with everything they needed for installation. They have instilled hundreds of these Generac units and know them well. However, what I noticed was their attention to detail. They measured everything carefully and used a level at every point to make sure things were absolutely straight. They even took pains to spray grey enamel on exposed pipes to make them match the grey of the cables. Where they had to did up plants, they make every effort to replant them once the cables were trenched and attached to the electric. They even made sure that the caulk they used to seal around the pipes and cables matched match the surface they were sealing. Afterwards they cleaned up everything and finished the job exactly on time. These installation details give you an idea how conscientious they were. Excellent installation service.
Date published: 2022-10-03
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22kW-7043 whole house switch WiFi-Enabled is rated 4.9 out of 5 by 1983.
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