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

Avatar for R A Buckley & Son Electrical Contractors, LLC
R A Buckley & Son Electrical Contractors, LLC
4.8(
49
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Columbia, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Offers commercial services

"He is extremely attentive to your needs . What he says will happen , does! He keeps all appointments and thoroughly explains what he plans to do. He is one of the most reliable, ethical , conscience businessman I have ever dealt with. I have recommended him to friends . He actually went out of his way to help Ill friends deal with their generator problems even though he had not installed it. He made arrangements for someone to fix the generator when he was not able. Highly recommended !"
Response time5 hrs
Response rate90%
Recommended by91%of homeowners
Avatar for TJF Electric LLC
TJF Electric LLC
5.0(
18
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Columbia, CT and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"Tylor was quick to respond to my inquiry and very accommodating to fix my problem as soon as he could. His expertise was shown as he diagnosed the possible issue over the phone and he had it fixed in no time once he arrived. He even fixed a lesser issue for no extra charge. I found his rates exceptional, and he will always be my first call for any of my future electrical issues."
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Avatar for Electric Solutions Contracting
Electric Solutions Contracting
4.3(
59
)
Fixed Generator - InstallPortable Generator - Install

Serving Columbia, CT and surrounding areas

Approved

In business since 2014

Free estimates

Offers commercial services

"This was the second job I hired ESC for, the first was a hot tub hookup, and this one wasn't a simple one: install a generator hook up that bypassed only some of my critical circuits to the generator, while leaving the rest of the house on the grid. This required a pretty complex panel with multiple switches and breakers. He did a neat and tidy job and was in and out in about 3 hours! He does the work alone, showed up on time, does a timely, high-quality job and is friendly and considerate to my needs, as a COVID-19 Locked down, WFH customer and he also worked with me on the quote, to get the number where I needed it to be. Kevin *IS* his business, meaning he does the jobs by day and the and invoicing and estimates by night. As he told me: he wants the work but, working on jobs all day doesn't leave much time for getting back to quote request and questions. I think he could do a better job of communicating that up front (why he took a slight ding on my customer service rating) but ultimately I was really glad I waited him out. In short, I'd definitely recommend ESC for your household electrical work, just be patient with his getting back to you. I will likely hire him again."
14 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for CHB Contracting LLC
CHB Contracting LLC
5.0(
5
)
Fixed Generator - Install

Serving Columbia, CT and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

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Excavation
5 neighbors recently requested a quote
Recommended by100%of homeowners
Jennings Electric
5.0(
2
)
Generator - Install - For BusinessPortable Generator - Install

Serving Columbia, CT and surrounding areas

Approved

In business since 2006

Free estimates

Offers commercial services

"Highly recommend!! Peter was very professional and easy to work with. Came when he said he would and finished the job on time. He also returned after the installation was complete to make certain furnace was running well and to install a new CO2 monitor when he noticed mine was outdated."
Response time3 days
Recommended by100%of homeowners
Avatar for Stimson & Abney Electric
Stimson & Abney Electric
5.0(
3
)
Portable Generator - Install

Serving Columbia, CT and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"I had a small electrical fire on a Saturday from out dated cloth wire. These guys showed up got it fixed to where my house was safe and came back on a Sunday to get it 100 percent done rewiring my out door lights for my front door. Amazing professional work. They came back a little later and re wiring my entire house for me new panel new wires handled the permit. I can’t say enough about their work and professionalism I have no issue leaving them a key to work while I’m not home. Again amazing quality work"
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Generator Install FAQs, answered by experts

The average cost to install a home generator is $5,200, but total costs can range from $500 to $18,000 or more. The final price depends on several factors, including the generator's size, type, brand, fuel source, and the cost of labor and assembly. The generator's size is the most significant cost factor, as units that can power larger homes with higher energy demands cost more.

Cost breakdowns by generator type are typically as follows:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500–$2,000

  • Partial-Home Generators (9kW–20kW): $2,000–$6,500

  • Whole-House Generators (22kW–48kW): $5,000–$18,000

To ensure you get the right size unit for your needs without overpaying, consider hiring an electrician to calculate the electrical load of your essential appliances. It is also recommended to get at least three quotes from qualified installers to find the best fit for your budget.

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.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

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 are safe to use as long as they are installed and operated correctly according to the manufacturer's recommendations. The most critical safety tips are to never use a portable or fuel-powered generator inside an enclosed space due to the risk of lethal carbon monoxide poisoning; always operate it outdoors where fumes can dissipate away from your home. Additionally, never attempt to connect a generator to your home’s electrical panel yourself—hire a professional to ensure the setup meets safety standards. Finally, avoid overloading the generator by not connecting more appliances than it is rated for, as this can damage your equipment or cause a fire.

The Columbia, CT homeowners’ guide to generator installs

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