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Cimas Technologies
4.7(
19
)
Fixed Generator - RepairGenerator - Repair - For Business

Serving Key Largo, FL and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

"They diagnosed the problem we had with our generator just by the description given to them on the phone. We hire them on a regular basis now to do the generator maintenance. They have us on a yearly schedule and up to now we are satisfied with their work and believe me we have had other companies before and you cannot compare, very professional."
Recommended by100%of homeowners
Avatar for Florida Standby Power Systems
Florida Standby Power Systems
5.0(
2
)
Generator - Repair - For Business

Serving Key Largo, FL and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Florida Standby Power Systems is A great company to work with. They are professional and have very high standards. The work they do is done correctly, on time, and professionally. I would recommend them for anyone who has industrial generators that need to be serviced or repaired."
Radiator install
Damaged transfer
Repaired switch
Maintenance
Response time6 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for AP Electric
AP Electric
New to Angi
Generator - Repair - For BusinessPortable Generator - InstallPortable Generator - Repair

Serving Key Largo, FL and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Hi, my name is Alejandro. I’m a licensed electrician with years of experience in residential and commercial electrical work. I specialize in safe, reliable wiring, troubleshooting, and installations, from lighting and outlets to full electrical systems. My goal is to make sure your home or business runs smoothly and safely, while providing honest advice and quality workmanship you can trust. I’m here to help with any electrical needs you have, no matter the size of the job.

Lights
Lights
Lights
Lights
Full kitchen remodel

+10

Duque Power Solutions
New to Angi
Portable Generator - InstallPortable Generator - Repair

Serving Key Largo, FL and surrounding areas

Approved

Duque Power Solutions provides electrical services for both residential and commercial customers. We offer discounts when applicable. We stand out for our punctuality, clean workmanship, and strict compliance with electrical codes. Every project is completed with attention to detail and full commitment to safety, quality, and customer satisfaction.

Avatar for Global Power Services
Global Power Services
5.0(
6
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Key Largo, FL and surrounding areas

Free estimates

Emergency services offered

Credit card accepted

"Usually I’m always all over the place when selecting a company and have to do a lot of price comparison, but when coming down to it Angi had an amIng price for the service. I’ve recommended them to family and friends due to their quick servicing and hustle mentality! They’ll get it done and that’s for sure !!"
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+10

Recommended by83%of homeowners
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Generator Install questions, answered by experts

Yes, in most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home models. Because these installations involve significant alterations to your home's electrical system and produce exhaust fumes, local governments often require a permit or inspection for safety purposes. A generator permit typically costs between $50 and $250, depending on your location. Your electrician or certified installer can usually handle the permitting process for you, but you will be responsible for the cost. It's a good practice to confirm with your installer that they will pull all necessary permits before work begins.

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

To reduce AC startup power for a whole-house generator, install a soft start kit or hard start capacitor, which lowers the initial surge by gradually ramping up the compressor. Using a smart load manager can also help by staggering startup loads, preventing a system overload and future costly repairs.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

The Key Largo, FL homeowners’ guide to generator installs

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