Get matched with top generator install pros in Key West, FL

Q: What size generator do I need for a 1500-square-foot house?

• <div><p>A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the <a href="https://www.angi.com/articles/how-many-watts-house.htm">total wattage</a> of the devices that you&rsquo;d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.</p></div>

Q: How long does it take to set up utilities?

• <div><p>Setting up utilities on a vacant property usually takes at least a few months, or between 6 weeks to 16 weeks. This process requires working with the local planning and zoning department, hiring a building contractor or engineer to design the utility layout, securing permits, laying the lines, and connecting the utilities.</p></div>

Q: Do you need a permit to install a permanent or whole-house generator?

• <div><p>In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between <b>$50 and $250</b>, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you&mdash;and might be required to do so by your building department&mdash;but you&rsquo;ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.</p></div>

Q: How long can a whole-house generator run continuously?

• <div><p>Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.</p></div>

Q: What are the disadvantages of a standby generator?

• <div><p>While standby generators provide essential backup power, they can fail when you need them most due to lack of maintenance, fuel supply issues, dead batteries, electrical problems, or improper installation. To avoid costly failures, professional installation and regular maintenance are crucial. Licensed technicians ensure safety, uphold warranty requirements, comply with regulations, and provide expert servicing.</p></div>

Enter your zip and get matched with up to 5 pros

Need a pro for your generator install project in Key West, FL?

Select your specific project to find the pro for you.

Verified Reviews for Generator Install pros in Key West, FL

*The Angi rating for Generator Install companies in Key West, FL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Key West, FL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on August 06, 2025

Reviewed in August 2025
Custom cabinet alteration and installation of 2 replacement Sub Zero kitchen freezer/icemaker drawers. The workmanship is excellent and looks like it is original. We are considering future projects.
Island Custom Build Corp.
Request a quote
Reviewed in January 2024
MJ Roofing performed flawlessly. At the time of quotation, Jose accurately told me when construction could begin, and how long the construction would take. Jose was on the jobsite every day to oversee the work. The crew showed up on time every day. The roof was installed perfectly down to evenly...
MJ Roofing of the Keys
Request a quote
Reviewed in January 2024
Paradise Lawn and Garden is the best landscaping company in the keys. I have used many different companies until I found PLG. They did a complete backyard install quickly and for a great price. I could not recommend PGL enough.
Paradise Lawn And Garden
Request a quote
Reviewed in November 2023
In addition to drywall MM Maintenance installed insulation and installed an air conditioner.
Mick Maintenance LLC
Request a quote
Reviewed in October 2023
we need quotation for the generator alternator cleaning .
Thompson Electric
Request a quote
Reviewed in October 2021
Extremely satisfied. Tim kept in touch with scheduling, material delivery and installation. Everyone was polite, organized and efficient. Tim was on the roof routinely checking on progress. I had a metal roof prior to this and demolition left metal and nails. The crew were very careful about...
T. Ryan Contracting, Inc.
Request a quote
Reviewed in October 2020
We had this company install our specific tile as backsplash in our high-end Key West remodel. Their communication, punctuality, and quality of work exceeded our expectations. They were helpful in all areas and could not have been more courteous and friendly. We would definitely use them again...
Jbbb keys construction
Request a quote
Reviewed in April 2020
Very professional and prompt! The communication was straightforward and thorough. The install team showed up when they said they would ,did a fantastic job and cleaned up afterwards. I am very happy with Mastercraft and highly recommend them!
Mastercraft Plumbing, Inc.
Request a quote
Reviewed in September 2019
The sales man to the installers were great to work with
Cool Aid Air Conditioning
Request a quote
Reviewed in August 2019
Nothing was impossible. Fast service, said yes to bid on Friday and installation was completed on Tuesday.
Cool Aid Air Conditioning Of SW Florida, Inc.
Request a quote

Find Generator install pros in Key West

Florida Standby Power Systems

5.0(

)

Generator - Repair - For Business

Serving Key West, FL and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Brian from Florida Standby Power did a great job repairing my generator. He did what he said he would. He was was on time and very professional. I'll always call them for my generator needs."

4 neighbors recently requested a quote

Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Key West, FL and surrounding areas

In business since 2014

Free estimates

"It went well. He arrived on time and completed the work the same day even provided a couple of recommendations to improve my home."

+15

Recommended by100%of homeowners

Generator - Repair - For BusinessPortable Generator - InstallPortable Generator - Repair

Serving Key West, FL and surrounding areas

In business since 2020

Free estimates

Credit card accepted

We can take on a wide range of residential and commercial service need projects to include full installation and repair of your generator needs, and a variety of home projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

Response time10 mins

Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Key West, FL and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"The quality of work was fantastic. They communicate with you every steps of the way, informative, and and efficient. I would recommend them."

+15

Recommended by66%of homeowners

Request Quote

The Home Depot - Generators

2.5(

)

Fixed Generator - Install

Serving Key West, FL and surrounding areas

In business since 2003

Free estimates

Small jobs welcome

Today, we're proud to be the world's largest home improvement retailer. In 2,300 stores across North America, we aspire to excel in service to our customers, associates, communities and shareholders. That's what leadership means to us. That's The Home Depot difference.

Request Quote

Tomkins electric

New to Angi

Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Key West, FL and surrounding areas

In business since 2018

Free estimates

Tomkins Electric LLC is currently serving Big Pine Key and the surrounding areas. For a job well done with your residential electrical service, please give us a call today. All estimates are free for perspective clients!

Request Quote

S.L ELECTRIC & REMODELING LLC

New to Angi

Fixed Generator - InstallGenerator - Repair - For BusinessPortable Generator - Install

Serving Key West, FL and surrounding areas

In business since 2024

Free estimates

Emergency services offered

We pride our company on reliability, great communication, \nintegrity, and quality work. We are experts in our trade and will do our best \nto keep you as educated as we can on your particular task or project. We look \nforward to earning your business!

Request Quote

U- Electric, Inc.

New to Angi

Generator - Repair - For Business

Serving Key West, FL and surrounding areas

In business since 2003

Free estimates

Warranties offered

I am a master electrical contractor with over 12 years experience in complete electrical service for both residential & commercial customers. From complete wiring to fixtures & fans! Please call U-Electric, Inc., today!

Request Quote

Electric solution of Miami

New to Angi

Portable Generator - InstallPortable Generator - Repair

Serving Key West, FL and surrounding areas

Licensed Electrical Services | Residential & Commercial\nReliable. Clean. Done Right the First Time.\n\nWe specialize in lighting installs, panel upgrades, troubleshooting, outlets, switches, recessed lighting, fans, EV chargers & more. Every job is completed with safety, precision, and attention to detail.\n\nServing Miami and surrounding areas.\nMessage now for a fast quote.

Request Quote

Generator Install questions, answered by experts

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

Setting up utilities on a vacant property usually takes at least a few months, or between 6 weeks to 16 weeks. This process requires working with the local planning and zoning department, hiring a building contractor or engineer to design the utility layout, securing permits, laying the lines, and connecting the utilities.

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

While standby generators provide essential backup power, they can fail when you need them most due to lack of maintenance, fuel supply issues, dead batteries, electrical problems, or improper installation. To avoid costly failures, professional installation and regular maintenance are crucial. Licensed technicians ensure safety, uphold warranty requirements, comply with regulations, and provide expert servicing.

The Key West, FL homeowners’ guide to generator installs

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

See all articles

Alison Kasch
•
Jul 10, 2026Jul 10, 2026
How Much Does It Cost to Install a Generator Transfer Switch? [2026 Data]
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
Taylor Freitas
•
Jul 9, 2026Jul 9, 2026
How Much Does a Whole-House Generator Cost? [2026 Data]
The average cost of a whole-house generator falls between $5,000 and $25,000. Keep reading to learn how much you can expect to spend.
Alison Kasch
•
Jul 8, 2026Jul 8, 2026
How Much Does a Natural Gas Generator Cost? [2026 Data]
Natural gas generators are whole-home standby generators that are connected to your home’s natural gas line. The average cost for a natural gas generator is $12,000.
Dan Simms
•
May 21, 2026May 21, 2026
How to Hire a Generator Installer
Generators should give you peace of mind, but you’ll only get that if your installer knows what they’re doing. Learn how to hire a pro and what red flags to look for.
Heather Ayer
•
Jul 8, 2026Jul 8, 2026
Whole-House Generator Installation: A Complete Guide
Whole home generator installations require a professional hand. Read this guide to help you decide which generator is best for your home.
Becca Lewis
•
Jul 9, 2026Jul 9, 2026
Who Installs Generators? A Complete Guide
Wondering who to hire to install a generator? Consult this guide to learn who to hire to install a generator or a transfer switch.