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Installed Residential Automatic Standby Generators

  • Power your whole home or select circuits during outages
  • System installation by local, licensed, and insured professional
  • Generac 5-year limited warranty on all home standbys
  • View More Details

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What To Expect

Get a quote during a free consultation

  • Schedule a free, in-home consultation for a quote 
  • During the consultation, a licensed expert will help assess needs, make generator size recommendations and schedule installation  
  • Your local expert will deliver and install your new home standby generator for the backup power you need, when you need it most 

Or call 

844-525-5087

Product & Service Overview

About This Product

Stay prepared for unexpected power outages with a professionally installed Generac home standby generator from The Home Depot. Whether you're protecting your family during severe weather, keeping essential appliances running, or maintaining comfort and security when the power goes out, a standby generator provides reliable backup power when you need it most. During your free in-home consultation, a generator expert will assess your home's power needs, discuss your priorities, and recommend a backup power solution that fits your home and budget. Whether you're looking to power your entire home or essential systems such as HVAC, refrigerators, sump pumps, lighting, and other critical circuits, we'll help you find the right solution with confidence.

Highlights

  • Free in-home backup power consultation
  • Generator sizing based on your home's energy needs
  • Reliable protection during unexpected outages
  • Professionally installed by trusted local experts
  • Professional measurements and project assessment
  • Financing options available for qualified buyers
  • Return Policy

Product Information

Internet # 300119109

Model # HSINSTGENGARSG

Specifications

Details

Decibel (dB) rating

Up to 67 dBs

Features

Hour Meter, Low Oil Shutdown, Overload Protection. Liquid Propane Or Natural Gas Fuel Type

Response Time

10 seconds

Returnable

90-Day

Wattage

22, 000W

Questions & Answers

How much is installation?
ByJan 31, 2026
1 Answer | 
Answer This Question

Hello Becky, every home is different, and so is every installation. The placement of the generator, materials required, adherence to local code/property restrictions, and installation of the natural gas or LP fuel source all make estimating installation costs unique. On average, total costs of a home standby generator installation range from $8,000-$16,000, including the generator itself. Pricing can vary based on several factors, including the complexity of the installation process and your location. The best way to know for sure is to get a free in-home consultation. One of our Authorized Generac Dealers will listen to your back up power needs, assess your home, and provide you with a free estimate. All at no charge, with no obligation, and no pressure: https://www.generac.com/home-standby-generators/request-quote/

By|Feb 2, 2026


    How much does it cost
    ByJul 29, 2025
    1 Answer | 
    Answer This Question

    Every home is different, and so is every installation. The placement of the generator, materials required, adherence to local code/property restrictions, and installation of the natural gas or LP fuel source all make estimating installation costs unique. On average, total costs of a home standby generator installation range from $8,000-$16,000, including the generator itself. Pricing can vary based on several factors, including the complexity of the installation process and your location. The best way to know for sure is to get a free in-home consultation. One of our Authorized Generac Dealers will listen to your back up power needs, assess your home, and provide you with a free estimate. All at no charge, with no obligation, and no pressure: https://www.generac.com/home-standby-generators/request-quote/

    By|Jul 15, 2026

      (2)

      Why is installation price double the generator price and more.
      ByJun 28, 2025
      1 Answer | 
      Answer This Question

      Hello Earl, installation costs can vary quite a bit depending on your location, local codes, and the site-specific requirements for fuel and electrical work. If you're considering professional installation, The Home Depot offers generator installation services and can help connect you with local installers. Learn more here: Homedepot.com/services/c/generator-installation-vp/efecec25e?s_tnt=203951:1:0'

      By|Jul 25, 2026


        How do you know how big a generator you need?
        ByMar 12, 2024
        1 Answer | 
        Answer This Question

        Hi, Edith. The size of your generator will depend on what items you'd like to power in the event of an outage. Our Home Standby Sizing Calculator can assist you in determining the right size generator for your home. The calculator considers all your power requirements and provides you with 3 potential generators that fit your needs. Additionally, you'll receive estimated installation costs and financing options as well. You can access the calculator at https://bit.ly/3tiG96Y If you have additional questions, please feel free to give us a call at 888-436-3722.

        By|Jan 24, 2026

          (4)

          how many QTS of oil does it hold an what kind or size
          ByDec 2, 2022
          1 Answer | 
          Answer This Question

          For example, Generac model #7290, oil capacity including filter is approximately 1.9 qt. 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|Dec 6, 2022


            way in Puerto Rico they charge 100.00 for orintation?
            ByAug 18, 2022
            0 Answer | 
            Answer This Question

            can you have a generac if your house only runs on eclectric? we don't have gas and elec.
            ByMar 20, 2022
            2 Answers | 
            Answer This Question

            Yes we also have generators that can run on diesel, propane or natural gas. We recommend working with an authorized Generac dealer as they will be better able to assist you. If you need assistance finding a local dealer, we recommend using our dealer locator found here: http://www.generac.com/dealer-locator

            By|Mar 21, 2022

              Do you have to have gas?

              By|Jan 31, 2026


                Is there an option to have a propane tank installed when buying a generator?
                ByFeb 25, 2022
                1 Answer | 
                Answer This Question

                Yes there is. The smallest propane tank we recommend for use with our automatic standby generators is a 250-gallon tank. We recommend working with your local propane supplier to determine the exact size tank that would be necessary for your application based off the volume and pressure requirements of the unit.

                By|Jul 26, 2022

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