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TRUSTED BY SANIBEL, FL HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon23
    Verified generator installs reviews

Find Generator install pros in Sanibel

Avatar for Always On Generators, LLC
Always On Generators, LLC
4.9(
18
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Sanibel, FL and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"Exceptional value on portable generator installation. William was very helpful, nice guy. Priced right! Big break in that they install gas tank and lines too, so you can do the install in 1 day! Totally trustworthy , highly recommended for your generator needs!"
Always On
Always On
Always On
Always On
Always On

+34

Response time20 mins
36 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Electric POV LLC
Electric POV LLC
5.0(
15
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Sanibel, FL and surrounding areas

Approved

In business since 2023

Free estimates

Offers commercial services

"Would highly recommend to anyone. Professional, detail oriented, and very educational throughout the process. They installed soffit lighting around the perimeter of my new home and the workmanship supersedes expectations. Again, would recommend to anyone in the Fort Myers & Cape Coral area looking for a solid team of electricians!"
Recent work
Recent work
Recent work
Recent work
Recent work

+3

17 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for AAAction Electric
AAAction Electric
4.5(
15
)
Portable Generator - Install

Serving Sanibel, FL and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"went awesome. i will hire them again in 3 yrs when i move into a different house for the same thing. they were 800 dollars cheaper than mr sparkey"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+40

Response time2 days
7 neighbors recently requested a quote
Recommended by78%of homeowners
Avatar for Reliable Power Systems
Reliable Power Systems
4.3(
395
)
Fixed Generator - InstallFixed Generator - Repair

Serving Sanibel, FL and surrounding areas

Approved (Corporate)

In business since 2002

Free estimates

Emergency services offered

"The work is not yet complete, permitting process has just started. All of my contacts with the company so far have been very positive. Sales and customer service are handled in a highly professional manner. The final permits and certificates have been completed and closed. All of the people I dealt with at Reliable Power Systems were polite and professional, keeping me up to date on project status. A word of advice to homeowners considering installing a home generator, be prepared to wait for your city to approve permits and complete inspections. These were the items that took the most time, and over which you and company have no control. It is also best to choose a company, like Reliable Power Systems, that handles 100% of the work. I highly recommend this company."
 Reliable on the Road!
 36KW Generac in Wellington
 125KW Kohler in Miami Beach
 Reliable service truck in Miami
 36kw Generac in Palm Beach Gardens

+45

Response time1 day
89 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for MTF, Inc.
MTF, Inc.
4.3(
392
)
Generator - Install - For Business

Serving Sanibel, FL and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

"Rob was very helpful by explaining how the generator system was to be connected and started to deliver the electricity to the circuit box. He also was very efficient and friendly while installing the equipment and answering questions we had about how to add and remove circuits to stay within the generator's output limit."
Front Lighting
Front Entry Lighting
Kitchen lighting
Inside lighting
Response time12 hrs
12 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for South Florida Electrical Engineering Inc.
South Florida Electrical Engineering Inc.
5.0(
5
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Sanibel, FL and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

At Mavaro Electric (West Coast Division of South Florida Electrical), we provide dependable electrical services for both residential and commercial clients across Naples and the surrounding areas. Whether it’s a planned upgrade or an emergency, we’re equipped to handle projects of any size.\n\nOur licensed team delivers a full range of services, including electrical repairs, new installations, panel upgrades, lighting systems, EV charger installations, generator setups, and preventative maintenance. We also work with smart home systems and energy-efficient solutions tailored to your needs.\n\nAs a state-certified contractor, all of our work meets Florida DBPR standards. Whether you're building new, renovating, or need fast troubleshooting, we’re committed to quality work and prompt service.\n\nContact us to schedule a service or request a quote. Let’s power your project the right way.

Moorings Way Project
Response time1 day
Response rate98%
20 neighbors recently requested a quote
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Generator Install questions, answered by experts

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

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.

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.

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.

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

The Sanibel, FL homeowners’ guide to generator installs

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