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Guardian 24,000-Watt (LP)/21,000-Watt (NG) Air-Cooled Whole House Generator with Wi-Fi and 200-Amp Transfer Switch

$639700
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$undefined.00 /mo* suggested payments with months* financingApply Now
  • Features True power technology to deliver best power quality
  • Pressure-lubricated engine requires less maintenance
  • Designed with user-friendly controls for smooth operation
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Product Details

As the industry leader, Generac is proud to offer peace of mind to more than 2 million homeowners. Generac created the home standby generator market over 60-years ago and continues to provide innovative backup power solutions to homeowner's across the world. Introducing the largest air-cooled generator on the market - Generac's 24kW is a big deal in a small-package. Generac's commitment to continuous improvement, innovation and technology is giving us the ability to bring more power to you. With Generac's new 24kW you can save up to 8,000 dollars in product and installation costs, when compared to competitive output products, while powering what is most important for your home or small business. The new 24kW Guardian unit-packs the most power into a small-package, taking up to 70% less space when compared to competitive output products. Disclaimers: Based on internal company data.
  • Save up to 8,000 dollars in product and installation costs when compared to other output products, based on internal company data
  • Takes up 70% less space when compared to other output products, based on internal company data
  • 5-year limited warranty for automatic standby generators
  • True power technology delivers best-in-class power quality with less than 5% total harmonic distortion for clean, smooth operation of sensitive electronics and appliances
  • Generac generators and engines are engineered and built-in (assembled 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
  • 24/7/365 customer support team standing by all-day, every-day from our headquarters in Wisconsin to answer any questions you might have
  • Quiet-test self-test mode runs at a lower RPM for a 5-minute or 12-minute test, making generators significantly quieter than other brands while consuming less fuel
  • Tough, durable all-aluminum enclosures: our RhinoCoat powder-coated finish helps make corrosion-resistant aluminum perfect for all weather conditions
  • Smart, user-friendly controls- Generac's evolution controller features a multi-lingual LCD display that allows users to monitor battery status and track maintenance intervals to ensure your generator is always in top operating condition
  • Images may include optional fascia kit, sold separately
  • Battery sold separately
  • To redeem warranty, please click on the warranty flyer under additional resources and follow instructions
  • Click here for more information on Electronic Recycling Programs
  • California residents

Additional Resources

From the Manufacturer

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Specifications

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Questions & Answers

526Questions
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Q:Can you hookup to propane
by|Nov 25, 2022
1 Answer
Answer This Question

A:  Power Sources: Natural Gas (NG) or Liquid Petroleum (LP).

by|Nov 26, 2022
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    Q:How do I know what size
    by|Nov 22, 2022
    2 Answers
    Answer This Question

    A:  Since each application is unique, we are unable to properly size a unit remotely. We do have a sizing calculator online that can help you get an idea on what generator may be needed, but we strongly recommend working with a dealer to ensure the proper generator is picked. Our sizing calculator can be found here: https://www.generac.com/for-homeowners/home-backup-power/build-your-generator, and all of our local dealers can be found at www.generac.com/dealer-locator.

    by|Nov 24, 2022

      A:  It comes down to how many watts/amps you want to simultaneously power during an outage, i.e. cooling/heating, refrigeration, lighting, entertainment, etc. Lookup the starting/running watts/amps for each device and add them up. Buy bigger than the total.

      by|Nov 23, 2022
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        Q:What size generator do I need to power a 72 x 14 ft mobile home with central heat and air conditioning, refrigerator, small chest freezer
        by|Nov 21, 2022
        2 Answers
        Answer This Question

        A:  It depends on how many watts/amps you want to have running SIMULTANESLY during an extended power outage. Consider cooling/heating, refrigeration, cooking, entertainment, etc. Find the starting/running watts/amps, add them up, buy a slightly bigger unit.

        by|Nov 23, 2022

          A:  Since each application is unique, we are unable to properly size a unit remotely. We do have a sizing calculator online that can help you get an idea on what generator may be needed, but we strongly recommend working with a dealer to ensure the proper generator is picked. Our sizing calculator can be found here: https://www.generac.com/for-homeowners/home-backup-power/build-your-generator, and all of our local dealers can be found at www.generac.com/dealer-locator.

          by|Nov 24, 2022
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            Q:What clearances are recommended
            by|Nov 14, 2022
            5 Answers
            Answer This Question

            A:  18” off of all flammable on the back and 36” on all other sides 

            by|Nov 21, 2022

              A:  18 inches (1.5 feet) from the house. 60 inches (5 feet) from doors, windows, and fresh air intakes. 36 inches (3 feet) in front of the generator for servicing room

              by|Nov 17, 2022

                A:  Each unit has clearances shown in the details.  

                by|Nov 20, 2022
                  1 found this answer helpful

                  A:  Although our Generac generators are certified to be as close as 18" to a structure, it is very important that they are in a safe location; away from all windows, doors, fresh air intakes, and that the location complies with all local codes. Before running your generator again, we recommend reaching out to a local dealer who can help you find a safe solution to your problem. Continuing to use your generator in it's current location can be an extreme hazard and can be deadly. We do not recommend having the generator in an outdoor enclosure. Not only will installing it in an outdoor enclosure void the warranty, but it can be life threatening. The generator should be able to breathe and having an enclosure could compromise your warranty with the generator. This generator is listed and labeled by the Southwest Research Institute allowing installation as close as 18'' to a structure. *Must be located away from the doors, windows and fresh air intakes and in accordance with local codes. You can find all installation information on our website, https://www.generac.com/service-support/product-support-lookup/product-support-details?productid=3cddcdeb-d2e6-4132-8aed-2d7b9a45a37f.

                  by|Nov 15, 2022

                    A:  For proper clearance. Five feet from a door or a window. 18 inches on the back of generator to a house or wall. 3 feet on sides and front for service. Must have 4 feet of clearance on top. 

                    by|Nov 21, 2022
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                      Customer Reviews

                      4.5 out of 5
                      (630)
                      • 4.5
                        out of 630 reviews
                      • 87%recommend this product
                      Filter by:
                      Showing 1-10 of 630 reviews
                      Great whole house Generator and Great installation
                      Looks and operates as expected. Very quite, great peace of mind knowing we are covered when the Zombie apocalypses comes.. Balanced Electric, an authorized dealer did the install and were top shelf! 5 stars all around.
                      by
                      Response from MarketingNov 1, 2022
                      Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3722!
                        • Recommended
                        First Official Call Up
                        It has been just over 12 months since our unit was installed. I have held out this long with writing a review until such time so I could witness a real loss of main power and the automatic switch and start/load sequence work. About an hour ago we had a lightning strike which knocked out power. I jumped out my chair excited (weird I know) but finally a real event. It started and loaded in between 15 to 20 seconds which was the way I wanted it and it is doing great. When the A/C kicked on, that initial surge caused a split second RPM drop, but that is to be expected. A year ago I was hesitant with such a large dollar purchase for "maybe" and today I have no regrets. Great product. Our dealer was Optimize EGS out of Scott Louisiana. Peace be with you
                        by
                        Response from MarketingSep 6, 2022
                        Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3722!
                          • Recommended
                          Nothing Like Having Peace of Mind
                          I recently had a Generac Generator installed at my home. Yes, it was a good chunk of change, BUT a worthwhile INVESTMENT. Here in South Texas we have been having extreme heat and previously unheard of extreme cold. Not to mention the annual threat of hurricanes. All of these thing puts pressure on our states power grid. We now have to look out for ourselves and be prepared for potential power outages. I’m so glad that I made the decision to get a whole house generator. Have not needed it yet, BUT … I’m confident that it is standing ready to keep the power on in our home when we need it. Highly recommend this product. It’s definitely worth the investment,
                          by
                          Response from GeneracAug 26, 2022
                          Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3722! Generac
                          • Verified Purchase
                          • Recommended
                          The key is your partner
                          This generator is near perfect for my needs. The only tweak I might recommend would be the ability to connect gas/electric/both under the unit (through the pad) as well as from the side (would improve the final installation appearance. That being said, looks very good and runs well and quietly. I need to add that the business you choose to install this system is key! I leveraged "Generator Works" in Denmark Wisconsin and couldn't be more pleased. If you need great results, do your homework and find a partner like the one I used.
                          by
                          Response from MarketingAug 18, 2022
                          Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3722!
                            • Recommended
                            A+ product and excellent installation by Generator Exchange
                            Ordered the 24KW unit in July of 2021 and finally got it installed in April of 2022 .. long backlog here in Houston post the big freeze in February 2021. Generator Exchange did a fine job with the installation which was a one-day job, post-pouring the mounting concrete slab. Ony hiccup was that the load shedding (SMM)) modules didn't seem to work at first with my 3 AC units. Generator Exchnage swapped them out and then we actually had a briefd power outage the next day, the genertaor kicked in for 10 miniutes, and the units worked flawlessly. Now waiting on the WiFi kit to finish the job.
                            by
                            Response from MarketingMay 9, 2022
                            Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3722!
                              • Recommended
                              Generator Technician for 20 years
                              Installing the generator was easy, the hardest part was getting it out of my truck, took 4 men to pick it up and set it down. Best advice for do it yourself installation is watch a couple of YouTube videos that would help you. I did this for a living but nothing this small, I worked for Aggreko & Cat installing industrial generators, so for me it was easy. Have to say the Generac generator I was really impressed, they know how to build equipment the right way.
                              by
                              Response from GeneracApr 4, 2022
                              Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3722! Generac
                              • Verified Purchase
                              4 found this review helpful
                              Good generator
                              Was Fairly easy to install but the AC low voltage instructions needs a lot of help.
                              by
                              Response from GeneracJan 26, 2022
                              Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3722! Generac
                              • Verified Purchase
                              • Recommended
                              Product
                              Our Generac has been installed for roughly a week. We haven't currently had the need for it. But any day now. Living in rural Louisiana, I expect that day will come soon enough. Very sleek looking machine that fit perfectly alongside our central H&A units. I know the distributor. His service & explanation was perfect and insightful. If we have any issues, I fully expect him to address them. We are beyond pleased with this Generac 24KW
                              by
                              Response from MarketingJan 26, 2022
                              Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3722!
                                • Recommended
                                Peace of mind
                                It took 4 years to finally had officially up & running & legal.Have peace of mind so when at work & powers out not worrying about my family & if portable is hooked up right & refuled safety.Best investment
                                by
                                Response from GeneracJan 4, 2022
                                Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3722! Generac
                                  • Recommended
                                  Satisfied and Comfortable
                                  Our 24KW Whole-Home generator was just installed, so the above itemized ratings are somewhat 'expectations'. Because our regional electric-power provider is planning to transition to a greater level of wind-turbine and solar E-power, while simultaneously encouraging customers to purchase all-electric vehicles (BEVs), and our home is 100% electric, including electric/hydronic heating - we felt very uncomfortable with the expectation of future brown-outs. Part of the checkout included a utility-power-loss simulation, and a progressive full-house-loading, The GENERAC system handled it well and the generator supported the whole-house-load at less than 70% generator load. The providing electrical contractor did an very efficient and professional job. We're now comfortable.
                                  by
                                  Response from MarketingDec 13, 2021
                                  Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3722!
                                    • Recommended
                                    Showing 1-10 of 630 reviews

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