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Internet # 315449036

Model # 7228

Store SKU # 1005960255

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Guardian 18,000-Watt (LP)/17,000-Watt (NG) Air-Cooled Whole House Generator with Wi-Fi and 200-Amp Transfer Switch

$6,109.00
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$/mo** suggested payments with mos** financing. Apply Now
  • 18kW whole house propane/17kW natural gas home standby generator
  • Monitor unit using ecobee, Alexa devices, free mobile link app
  • Generac 5 Year Warranty
  • View More Details

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Product Details

About This Product

As the #1 selling home standby generator brand, Generac's Guardian Series generators provide the automatic backup power you need to protect your home and family during a power outage. Every Guardian Series generator comes with Free Mobile Link Connectivity, allowing you to monitor the status of your generator on a phone, tablet or computer from anywhere in the world. Connected to your existing LP or natural gas fuel supply, the generator starts within seconds of sensing power loss - automatically - and runs for as long as necessary until utility power returns. Choose from just enough power to cover essential circuits or whole house coverage. Generac's Guardian Series offers benefits that few competitors can match, all backed by 24/7/365 customer support and a nationwide dealer network of more than 6,000 strong, the best in the market.

Highlights

  • Generac 5 year Warranty
  • 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 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
  • 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
  • Liquid Propane 18000kW / Natural Gas 17000kW
  • Includes: home standby generator, 1-200-Amp Transfer Switch 1-flex fuel line, 2-keys, 1-batt post cover red +, 1-decal service entrance warning, 1-decal warn through conductors, 1-decal service disconnect, 1-warranty statement, 1-guide-site selection doc, 1-install manual, 1-owners manual, 1-important mobile link quick start guide, 1-decal generator disconnect
  • Request Your Free Home Standby Generator Quote
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 315449036

Model # 7228

Store SKU # 1005960255

Specifications

Dimensions

Product Length (in.)

48 in

Product Width (in.)

25 in

Details

Application

Emergency Use, Home Standby

CO Shutoff Capable

No

Color Family

Beige

Engine Make

OEM Branded Engine

Features

Auto Idle Control, Automatic Voltage Regulation, Grounded, LCD Display, On Indicator Light, On/Off Switch

Fuel Tank Capacity (gal.)

0 gal

Fuel Technology

Dual Fuel

Full load fuel consumption (gallons/hour)

110

Half-Load Run Time (Hours)

62

Included

Automatic Transfer Switch

Number of Receptacles

0

Operational Volume (dB)

65

Outlet Type

120/240 Single Phase

Power/Fuel Type

Natural Gas, Propane

Response Time (sec.)

15

Returnable

Non-Returnable

Running Wattage

18000

Start Type

Push Button

Starting Wattage

18000

Warranty / Certifications

Manufacturer Warranty

5 Year Limited Warranty

Questions & Answers

Does Generac offer financing.
ByOct 11, 2026
1 Answer | 
Answer This Question

Hi, thanks for reaching out. Financing options may be available for your generator purchase through The Home Depot. We recommend checking with The Home Depot directly for information about their financing programs and eligibility requirements.

By|Oct 15, 2026


    If I buy generic generator lots inscludef toninstalled
    BySep 5, 2026
    1 Answer | 
    Answer This Question

    Thanks for reaching out, Madelyn! The Home Depot offers generator installation services and can help connect you with local installers. Learn more here: https://www.homedepot.com/services/c/generator-installation/efecec25e?vfrom=global-header

    By|Sep 9, 2026


      I am moving to an off grid situation for a few months, maybe longer. I'm building a metal barn for storage and plan living in my 5th wheel while house is built. Would this system power appliances 24/7 for an undetermined amount of time? 3 frzrs 2 frdge
      ByAug 30, 2026
      1 Answer | 
      Answer This Question

      Our home standby generators are designed to supplement the utility during brief power outages and should not be used as a primary source of power for off-grid applications. Using a home standby generator as a primary source of power will compromise warranty coverage: https://support.generac.com/s/article/Can-My-Home-Standby-Generator-Be-Used-as-the-Primary-Source-of-Power-for-My-Home An exception to this is our EcoGen generator, which is designed to backup alternative energy sources. To learn more about recommended back up power solutions for your unique application, we encourage you to connect with a Generac-authorized service dealer in your area: https://www.generac.com/home-standby-generators/dealer-locator/

      By|Sep 2, 2026


        What size/type of battery is needed for the 22,000 Watt Generac generator?
        ByAug 18, 2026
        1 Answer | 
        Answer This Question

        Hello, Edward. Recommended battery specifications are: 12-volt, Group 26R with at least 540 CCA or Group 35 AGM with at least 650 CCA. If you live in a cold climate, a battery with higher CCA (cold cranking amps) is recommended to ensure ample starting power when the temperature drops. You can purchase a battery at most home improvement or auto parts stores.

        By|Aug 19, 2026


          How much clearance is required around the generator
          ByJun 16, 2026
          1 Answer | 
          Answer This Question

          Thanks for your question, David! We require a minimum of 18 inches of rear clearance between the generator and your house. Additionally, NFPA requirements dictate there should be no operable windows, doors, vents, window wells, or openings in the wall are permitted closer to any point of the generator than what is permitted by locally adopted codes. Minimum clearance from the front and ends of the generator is 3 feet, which includes brushes, shrubs, and trees. We also require a minimum of 5 feet of overhead clearance.

          By|Jun 16, 2026


            What size is the gas line
            ByMay 27, 2026
            1 Answer | 
            Answer This Question

            Great question, Pete! The size of the fuel line you’ll need depends on the size of your generator, the distance between your generator and the fuel source, what kind of pipe you’re using, and local code requirements. To ensure your generator is installed correctly with all these variables taken into account, we recommend scheduling a free no-obligation in-home consultation with your local Generac dealer here: https://www.generac.com/prepare/installation/

            By|May 27, 2026


              I have a 250 amp service. Can I still use the 200 amp transfer switch?
              ByApr 30, 2026
              1 Answer | 
              Answer This Question

              Yes, a 200-amp ATS (automatic transfer switch) can be used with 250-amp utility service. The rule is: The ATS amperage must be equal to or less than the amperage of the home's utility service. A 200-amp transfer switch is less than 250 amps, so it meets that requirement. However, keep in mind that the 200-amp ATS will only cover up to 200 amps of your home's electrical load, not the full 250-amp capacity of your service. See here for more information: https://support.generac.com/s/article/Automatic-transfer-switch-compatibility-guide

              By|Aug 20, 2026

                (1)

                Can i also have the generac installed? is it billed separately?
                ByApr 8, 2026
                1 Answer | 
                Answer This Question

                Hello Tim, great question. You can request a free pricing estimate and consultation for installation through the Home Depot by checking the box for Get Expert In-Home Installation. This button is typically located near the "Add to Cart" button. Alternatively you can find local Generac Dealers and Installers here: https://www.generac.com/dealer-locator/

                By|Apr 9, 2026


                  Viewing 1-8 of 1290

                  Customer Reviews

                  4.6 out of 5

                  • 4.6 out of 4,864 reviews
                  • 94% recommend this product
                  Filter by:
                  Showing 1-10 of 4,864 reviews
                  Should have tried a different brand
                  Purchashed in 2024, had a few outages through out the first year. At almost a year and 25 hours of run time, the engine begin to leak oil pretty good. Further inspection had 2 inches of oil in the air filter housings. Used the app to reach out for dealer, heard nothing back. Called dealer, they came out and did some testing, determined that engine was bad and needed replaced. Brand new, 25 hours and engine went bad. Dealer ordered new engine, took 2 weeks to arrive, and another week to install. During the testing the tech called Generac and they ask for pictures of install all the way around. Mine was text book install, but I had my trash can ready to go out and it was sitting 4 to 5 feet next to the generator that they questioned. Dealer said if not installed according to code they can deny the warranty claim. Unbelieveable the legnth they will go to deny a warranty for a failed product they made. Confidence is as low as it can get. This is my 3rd unit and only unit i've had major failure on. Seems their quality comes 2nd to everything else. These units are way to exepnsive and quality control needs to be the higest. In most cases these units support life and product failure is far too common.
                  by
                  Response from Generac SupportOct 14, 2026
                  Thank you for sharing your experience. We're very sorry to hear about the issues you've encountered, especially with a generator that had only accumulated 25 hours of runtime before requiring an engine replacement. We understand how frustrated you must feel having had an unexpected engine failure and delays during the warranty repair process. We appreciate your longtime trust in our products, and we're concerned to hear that this experience has impacted your confidence in the brand. While warranty evaluations may require dealers to verify installation conditions and code compliance, we understand how that process can become difficult to navigate as a generator owner. We're glad the issue was ultimately diagnosed and the engine replaced under warranty, but we recognize that the downtime and overall experience did not meet your expectations. If you would like to discuss your experience further, particularly regarding communication, dealer support, or the warranty process, please contact our Customer Support team at 1-888-436-3722. We appreciate your candid feedback, as it helps us better understand where we need to improve both product reliability and the customer experience.
                    Great unit!!
                    Once it was upgraded it has been exceptional. It has switched and operated three times over the year. Provides needed security.
                    by
                      • Recommended
                      I like it
                      This customer chose to rate the product and not provide text.
                      by
                        Peace of mind.
                        Purchased the unit at the end of May, unfortunately had not had the time to install and a huge storm came through the region. I had to purchase a portable unit. You can believe that the 10 kw is now installed and working properly.
                        by
                          NOT HAPPY CONSUMER!!
                          I bought the 22Kw air-cooled propane unit after 14 years my previous Generac 20Kw air-cooled propane generator died. As an owner, I am NOT happy about not having the choice of how long to exercise the generator because someone in Generac decided I didn’t need the option of making that decision on a generator that I purchased from your company. This is a VERY BAD business decision on your part. As a consumer, those decisions should be left up to the owner, NOT someone in your office.
                          by
                          Response from Generac SupportOct 2, 2026
                          Thank you for your feedback. We understand your frustration with having fewer exercise settings available than previous models. If you'd like the generator to run longer, you can do so manually: • Turn off the main line circuit breaker (MLCB) on the generator. • Press the Manual button. The engine will continue to run until you switch it out of Manual mode. Your feedback regarding exercise cycle customization is important, and we'll make sure it is heard. We're glad you chose another Generac generator and appreciate your continued trust in our products. If you have questions about your generator's available exercise settings or general operation, our Product Assistant provides instant answers and step by step instructions. Check it out here: https://support.generac.com/s/article/Product-Assistant Thank you again for your honest feedback and for being a valued Generac customer.
                            • Recommended
                            Great decision
                            So far, so good. No regrets about this major purchase. The power went out in the neighborhood last week and my power transition was flawless. I looked outside to determine what happened and realized the power was out.
                            by
                              • Recommended
                              Peace of mind
                              Everything works as promised! Love the peace of mind during electrical outages!
                              by
                                • Recommended
                                Generac fails this customer
                                Horrible product can't be trusted. Waiting for a 3rd generator install since Aug 3rd 2026. Both have failed mechanically and deemed not repairable by the techs. There is zero sense of urgency from Generac to install a 3rd unit as I am coming up to making my 2nd payment on a dead generator that is nothing but a $13,000 lawn ornament.
                                by
                                Response from Generac SupportSep 21, 2026
                                We’re sorry to hear about your experience. We understand how frustrating it is to have multiple generator failures and still be waiting for a replacement while making payments on a unit that is not operational. Please contact Generac Customer Support at 1-888-436-3722 so your case can be reviewed and escalated. We’d like the opportunity to better understand the delays and help move this toward a resolution.
                                  New 22kw With Transfer Switch
                                  We have not had an outage yet, but I've tested the transfer functionality twice. Voltage and frequency are in spec. Be sure to watch your installer or you'll end up with something like ours if your brick is not standared. I don't like the TS not flat against the brick. See photos. I hate to wish for an ice storm this winter but.....
                                  by
                                    • Recommended
                                    Lifesaver
                                    I installed this in 2024 and it’s been through 3 big outages and performed flawlessly
                                    by
                                      • Recommended
                                      Showing 1-10 of 4,864 reviews

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                                      Product Snapshot

                                      Ideal for whole-house power backup with dual fuel, remote monitoring, and a 5-year warranty.
                                      Ideal for homeowners who want whole-house backup power with smart monitoring.
                                      Ideal for homeowners wanting reliable whole-home backup power, ensuring comfort and security.
                                      Ideal for customers who want reliable whole-home power, ensuring seamless operation during outages.

                                      Wattage Capacity

                                      18000-Watt (LP) / 17000-Watt (NG)

                                      Fuel Type Options

                                      Automatic Transfer Switch

                                      Whole-House Coverage

                                      Remote Monitoring