Standby/Backup Generator Installation & Maintenance

Jacksonville's & St. Augustine's Authorized Generac Dealer


A permanently installed Generac home backup generator protects your home automatically. Running on natural gas or liquid propane fuel, the generator sits outside your house just like a central air conditioning unit. A home backup generator delivers power directly to your home's electrical system, backing up either your entire home or just the most essential items.


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Invest in Backup Power for Your Home

Generac home backup generatorWondering if a generator is a good investment for your home? Generac automatic home backup generators are permanently installed and automatically deliver power during an outage. These can back up your entire home if you choose and are the preferred brand of homeowners. Features include: 

  • Automatic operation
  • Refueling not necessary
  • Power directly to your home
  • 24/7 customer support

The main function of a home backup generator is to provide power when the electricity from your local provider is disturbed or unavailable. A typical home may have over 100 devices requiring electrical power, so we understand how important a backup power supply from a home standby generator is to your daily routine. A Generac home generator will power:

  • Lights
  • Heating and cooling systems
  • Sump pumps
  • Water heaters
  • Refrigerators
  • Security systems
  • Computers
  • Shore power operating for bilge pumps
  • And more!

Generators for Hurricane Season


As a Florida resident, you likely know that getting hit by a hurricane isn’t just possible, it’s inevitable. It will come as no surprise that Florida gets hit by more hurricanes than any other state in the U.S., so it’s important for residents of Jacksonville, St. Augustine, and the surrounding areas to have a plan for when they hit. As part of that preparation, many homeowners purchase generators in case power goes out during or after hurricanes. June is the beginning of hurricane season, so it's smart to make your generator purchase well before the season starts, both to ensure you are prepared and also because demand rises rapidly, making generators harder to come by during active hurricane season.

The following are some of the top reasons to invest in a permanent generator for your home:

  • Reliability: Permanent generators start automatically, so your generator will power on within 20 seconds of the power going out.
  • Safety: Permanent generators offer many safety benefits. First off, they are a far safer alternative to portable generators. And if the power goes out for a while, your generator will keep you protected.
  • Communication: These days, almost everything we do requires power. Being able to keep your phone and devices charged allows you to access the internet so you can receive any important updates about the hurricane.

Make the safe choice for your home and invest in a permenant generator from David Gray! Call us at (904) 724-7211, or check out some more useful tips for preparing your home for hurricane season.

Frequently Asked Questions

Who controls your home? Who decides whether you have enough power to run your critical power needs during an emergency? If you have an automatic standby generator, the answer is you!

What types of generator services do you provide?

We have many options, ranging from turnkey installation of an automatic power generator for your entire home to a simple power inlet for your own portable generator. We can work with any budget and goal to find the right fit for you.

What is included in a turnkey installation?

We will purchase and deliver your generator and install your critical power loads. Once everything is complete, a certified generator specialist will start your generator and set your generator run cycle and power settings. These backup generators come on automatically when your power goes out and turn themselves off when your power is restored. They also automatically turn on once a week to exercise the motor and only need maintenance once a year.

Can a turnkey installation power my whole home?

Yes, but it depends on the size of your home and the size of the generator you want to purchase. We can install an automatic generator large enough to power your entire home or just big enough to handle your most important circuits. The main difference between a turnkey installation and a basic installation is the turnkey generator comes on automatically during a power outage.

What is a basic generator installation?

For basic generator installations, we install a power inlet for your portable generator to plug into during a power outage. Then, we install a manual transfer switch in your electrical panel so you can safely and easily switch from the power grid to your generator. During a power outage, you would plug in your portable generator, start it up, and turn the transfer switch to "generator mode." We can install transfer switches that manage your entire home or just your most important circuits.

What brand of generator do you install?

We are an authorized Generac dealer.

Do I need to have a portable generator to get the basic setup?

No, we can install the generator setup, and you can purchase a generator at any time. All you have to do is plug in your new unit.

Do you provide annual maintenance plans?

Yes. We perform annual maintenance tasks such as:

  • Inspecting fuel lines, fuel levels, and connections
  • Checking wiring for loose connections, corrosion, and damage
  • Checking battery charge state and cranking voltage
  • And more!

Will you handle installing the gas line to the generator?

No, unfortunately, we do not provide this service anymore. 

Contact David Gray Electrical Services Today

For decades, local businesses have trusted David Gray to provide fast, quality service for heating, cooling, and plumbing systems. Our electrical team is no different. When you call our office to get help, you can rest assured that a licensed and qualified electrician will arrive soon in uniform. We offer full-service installations and repairs for home backup generators.

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