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TRUSTED BY GUILFORD, CT HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon21
    Verified generator installs reviews

Find Generator install pros in Guilford

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 Guilford, 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%
5 neighbors recently requested a quote
JMP Electric, LLC
4.9(
91
)
Portable Generator - Install

Serving Guilford, CT and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"It was a pleasure to deal with this company. They are extremely knowledgeable in designing an electrical charging station in what was a difficult i situation. My breaker panel and garage were on opposite sides of my home. A solution was given at a reasonable price. I could not be happier. All work was done professionally with great attention to detail. If you are in need of electrical services, donâ t look any further. They are without a doubt, the best."
Response time5 hrs
Response rate85%
1 neighbors recently requested a quote
Avatar for Firemans Services LLC
Firemans Services LLC
5.0(
4
)
Portable Generator - Repair

Serving Guilford, CT and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Firemans Services LLC is a trusted, locally owned electrical contracting company dedicated to delivering safe, reliable, and high-quality electrical solutions. We specialize in residential and light commercial work, including service upgrades, panel replacements, generator installations, and custom electrical projects.\n\nWith a strong commitment to craftsmanship and customer satisfaction, our team takes pride in doing the job right the first time—on schedule and within budget. Whether you need a full service upgrade, backup power solutions, or everyday electrical repairs, Firemans Services LLC is your dependable choice for professional service you can count on.

Meter
Tesla Charger
Electrical Connection, Inc.
4.6(
16
)
Fixed Generator - InstallPortable Generator - Install

Serving Guilford, CT and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Great service and Mark was professional at his work and explaining the problem. It wasn't the fan in the master bedroom that went bad, and he suspected the circuit GFI was tripped. We spent a little time to look for the failed GFI and was able to locate it in an odd place. The diagnostic price was a little expensive though."
 Service Van
 Generator Maintenance
Recommended by100%of homeowners
Avatar for Elevate Electric LLC
Elevate Electric LLC
5.0(
4
)
Portable Generator - Install

Serving Guilford, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Credit card accepted

"The electrician Kyle was professional , honest and affordable. He was punctual and courteous. I hired him for the wiring and panel upgrade but I requested he change my six GFCI outlets and check the older outlets. He checked the outlets that I was worried about -they were good. He did need to replace a different inside outlet and 2 of the 4 outside outlets. He was kind and explained why they needed to be replaced. One just was no longer working. The other 2 were not up to code actually were a fire hazard. I am female senior citizen grateful I hired Elevate Electric."
Response time9 hrs
3 neighbors recently requested a quote
Avatar for SPI, LLC
SPI, LLC
5.0(
3
)
Fixed Generator - InstallPortable Generator - InstallPortable Generator - Repair

Serving Guilford, CT and surrounding areas

Approved

In business since 2020

Free estimates

Small jobs welcome

"We've worked with Mike on three major kitchen/bathroom remodels now, and he has always managed the projects expertly, ensuring that everything was done to an extremely high standard. What's more, he and his co-workers are a pleasure to have around the house. Renovations are inherently stressful, but Mike takes care of everything for you. My only reservation in recommending him and his company is that he'll get so booked up he won't be available to help on our future projects! Highly recommend."
Response time1 day
4 neighbors recently requested a quote
Recommended by100%of homeowners
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Generator Install questions, answered by experts

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

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

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

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

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

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.

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. 

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

The Guilford, CT homeowners’ guide to generator installs

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