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TRUSTED BY SHERMAN, CT HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon20
    Verified generator installs reviews

Find Generator install pros in Sherman

Avatar for Frank's Generator Sales Service & Repair
Frank's Generator Sales Service & Repair
5.0(
21
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+4 more

Serving Sherman, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"10 yr old Generac GP6500E wouldn’t start. Called around and many want to upsell to permanent. Found Franks and what a delight. Honest, down to earth, affordable for senior. Showed up on time. Changed oil, spark plug. Pulled carburetor and found it dirty and fouled. Got used one from his shop(same day) and installed. Gen started right up on one or two pulls. Battery was dead but showed us how to replace. Highly recommend Frank’s Generator."
Generator emergency service call
Generator Project
Generator Service
Generator emergency service call
Generator Project

+29

Response time2 days
18 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Firemans Services LLC
Firemans Services LLC
5.0(
4
)
Portable Generator - Repair

Serving Sherman, 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
Avatar for Coraizaca Electrical Contractors LLC
Coraizaca Electrical Contractors LLC
5.0(
1
)
Portable Generator - InstallFixed Generator - InstallFixed Generator - Repair+4 more

Serving Sherman, CT and surrounding areas

Approved

In business since 2024

Free estimates

Warranties offered

"The owner, Johnny, was very friendly, knowledgeable, and easy to work with. The work was done promptly within the timeframe we needed it to be done. Johnny also helped recommend some ways to improve/save money during our home renovation. Would highly recommend and hire again."
Lighting Fixture Install
Lighting Fixture Install
Lighting Fixture Install
Lighting Fixture Install
Lighting Fixture Install

+14

1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for McCormack Electric, LLC
McCormack Electric, LLC
5.0(
2
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Sherman, CT and surrounding areas

Approved

In business since 2022

Emergency services offered

Credit card accepted

Mccormack Electric is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 12 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

Response time2 days
Recommended by100%of homeowners
Avatar for Coraizaca Electrical Contractors LLC
Coraizaca Electrical Contractors LLC
5.0(
1
)
Portable Generator - Install

Serving Sherman, CT and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

I pride myself on my professionalism, as well as my ability to complete every job to the homeowner's total satisfaction. I never leave a job unfinished, or a homeowner not 100% satisfied with my level of service - Call today!\n

Response time9 hrs
Recommended by100%of homeowners
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Generator Install questions, answered by experts

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.

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.

If you’re wondering if you can use your electric vehicle as a backup battery, it depends on whether your EV is compatible with bidirectional charging. This technology allows energy to flow both ways, enabling vehicle-to-home (V2H) backup power, vehicle-to-load (V2L) for appliances and camping, and vehicle-to-grid (V2G) to support the power grid. Compatible EVs convert stored DC energy into usable AC power, helping reduce energy costs and enhance grid stability while providing emergency backup power.

Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there’s no limit to the supply of natural gas, they don’t need to stop for refills. However, generators do need maintenance, including pauses to check and add oil. Constantly running them will also cause a lot more wear and tear, leading to a shorter lifespan.

The Sherman, CT homeowners’ guide to generator installs

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