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Best generator install pros near Williston, FL

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Top-Rated Generator install pros in Williston - Updated Nov 2026

Avatar for T & F Electric
T & F Electric
4.5(
199
)
Portable Generator - Install

Serving Williston, FL and surrounding areas

Approved

In business since 2007

Emergency services offered

Warranties offered

"Excellent job done by a pair of professonals. Knew what they were doing from the onset, went right to work and got done in half the time I invisioned it would take. Definitely hiring again when needed"
 Wiring of Jacuzzi & Gazeebo
 Outdoor Ceiling Fan
 Panel Upgrade
 Agriculture Electrical
 Van #1

+3

Response time1 day
Recommended by95%of homeowners
Avatar for A-1 Florida Electric Contractor Corp.
A-1 Florida Electric Contractor Corp.
4.6(
50
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Williston, FL and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

"They are incredible!! They are by far the nicest, most conscientious electricians I've ever worked with. They're honest and get the job done. We had a major panel upgrade and they handled the whole thing from planning to permits. They were at our house for the inspection and handled the whole process. Not only that, they were friendly and got back to me right away when I had a question. They then followed up with me when the project was done to make sure all went well and if I needed anything else. These folks are THE BEST!!"
Meter Installation
Rv 50 Amp Hookup
Commercial Electrical Panel and Gutter
Commercial Job
Electrical Desconective 600 amp

+7

Response time2 days
4 neighbors recently requested a quote
Recommended by85%of homeowners
Fazenda Electrical Services LLC
5.0(
3
)
Portable Generator - InstallPortable Generator - Repair

Serving Williston, FL and surrounding areas

Approved

Warranties offered

Credit card accepted

Offers commercial services

Fazenda Electrical Services LLC is a trusted electrical contractor dedicated to providing safe, reliable, and high-quality electrical solutions for residential and commercial clients. We specialize in electrical installations, panel upgrades, lighting, troubleshooting, repairs, maintenance, and new construction projects. Our team is committed to professionalism, honesty, and attention to detail in every job we complete. We take pride in delivering excellent customer service, efficient work, and dependable results that our clients can trust. At Fazenda Electrical Services LLC, our goal is to build lasting relationships by exceeding expectations and ensuring every project is completed safely, on time, and with the highest standards of quality.

Trademark Electric
New to Angi
Fixed Generator - Install

Serving Williston, FL and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

Trademark Electric was founded in 2012 & has grown into being one of Generac’s top Power Pro Prestige Dealers in Florida. We are a state-certified electrical contractor, with Generac certified technicians who are qualified to install, service and handle warranties on both residential and commercial Generac Generators. Our office staff are educated and ready to assist with any of your generator needs from scheduling your FREE consultation, to permitting & installation, to maintaining the longevity of your unit.

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+26

46 neighbors recently requested a quote
Avatar for Rich Amabile
Rich Amabile
5.0(
19
)
Generator - Repair - For BusinessPortable Generator - InstallPortable Generator - Repair

Serving Williston, FL and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"Rich contacted me after searching for an IT technician to set up Wi Fi and security cameras. He is highly knowledgeable about various tech and electrical aspects. The installation took a couple of hours, as we had to run new internet cables in our home. The Wi Fi signal significantly improved with wireless coverage throughout the house. Once the installation was complete, Rich programmed the camera notifications and alert zones as per our request. He also gave us a quick tutorial on adjusting settings for both the new cameras and Wi Fi system."
Response time1 day
Recommended by100%of homeowners
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Generator Install FAQs, answered by experts

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

It is safe to run a generator continuously, but you must follow safety protocols to ensure personal and home safety. Read the manufacturer’s instructions for specific recommendations, but the general recommendation is to turn generators off overnight or when you’re away from the house. Overworked generators can pose a fire hazard and if your generator is not in a well-ventilated area, running it continuously could lead to carbon monoxide poisoning.

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

The Williston, FL homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.