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Generator installers in Sandwich

Avatar for Power Moves Electric, LLC
Power Moves Electric, LLC
Plaza Village Road
5.00(
11
)
Approved Pro
Power Moves Electric, LLC
Plaza Village Road
5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
52 local quotes requested

Power Moves Electric, LLC focuses on being top notch for all electrical projects no matter how big or small. You will find that we provide a variety of services with our expert services ranging from a simple panel swap to wiring a brand new home here at Power Moves Electric we pride ourselves on providing quality work and showing up when we say we are going to! Give us a call today at 603-481-0480 and let our work speak for itself thank you!

"On time and fair price"

Jeremy C on June 2023

Power Moves Electric, LLC focuses on being top notch for all electrical projects no matter how big or small. You will find that we provide a variety of services with our expert services ranging from a simple panel swap to wiring a brand new home here at Power Moves Electric we pride ourselves on providing quality work and showing up when we say we are going to! Give us a call today at 603-481-0480 and let our work speak for itself thank you!

"On time and fair price"

Jeremy C on June 2023


Avatar for Granite State Solar
Granite State Solar
57 Ryan Rd
New on HomeAdvisorNew on Angi
Approved Pro
Granite State Solar
57 Ryan Rd
New on AngiNew on HomeAdvisor
Approved Pro
34 local quotes requested
17 years of experience

Granite State Solar creates resilient energy systems for homes and businesses throughout New Hampshire. We meet your energy needs with custom generator, battery backup and solar panel installations.

Granite State Solar creates resilient energy systems for homes and businesses throughout New Hampshire. We meet your energy needs with custom generator, battery backup and solar panel installations.


Avatar for Robert Electrical Services
Robert Electrical Services
PO Box 1141
4.86(
159
)
Approved Pro
Robert Electrical Services
PO Box 1141
4.86(
159
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
20 local quotes requested

Martin Robert Electric Service is a family owned, full-service, electrical systems installation & repair company. With over 30 years of experience in both the electrical and communications fields, we have the expertise to take on your next new construction, remodeling project, or emergency call. As an authorized Generac generator dealer, consult with us when considering emergency back-up power for your home or business facility. Include us as a member of your team of select contractors for updating your kitchen, attic, basement level ling space, or your entire home. We also perform wiring projects in support your ever increasing personal/business computing needs, ie., computer, phone, cable TV. Customer care is of the highest priority, we see satisfied customers as the "engine" driving our future success. Maintaining good communications with you is our guarantee. Recent customer submitted reviews can be accessed through the "Testimonials" page at our website. Martin Robert Electric Service looks forward to working with you and promises competitive pricing on your next project. NH Lic. #8409M, Maine Lic. # MS60018611

"Marty was kind, professional, and fair with pricing. We would definitely recommend using him!"

Juliet P on September 2024

Martin Robert Electric Service is a family owned, full-service, electrical systems installation & repair company. With over 30 years of experience in both the electrical and communications fields, we have the expertise to take on your next new construction, remodeling project, or emergency call. As an authorized Generac generator dealer, consult with us when considering emergency back-up power for your home or business facility. Include us as a member of your team of select contractors for updating your kitchen, attic, basement level ling space, or your entire home. We also perform wiring projects in support your ever increasing personal/business computing needs, ie., computer, phone, cable TV. Customer care is of the highest priority, we see satisfied customers as the "engine" driving our future success. Maintaining good communications with you is our guarantee. Recent customer submitted reviews can be accessed through the "Testimonials" page at our website. Martin Robert Electric Service looks forward to working with you and promises competitive pricing on your next project. NH Lic. #8409M, Maine Lic. # MS60018611

"Marty was kind, professional, and fair with pricing. We would definitely recommend using him!"

Juliet P on September 2024


Avatar for Callahan Electric
Callahan Electric
76 Old Marsh Hill Road
5.00(
5
)
Approved Pro
Callahan Electric
76 Old Marsh Hill Road
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
54 local quotes requested

New construction/ Remodels Kitchen and Bathrooms Pools and Spas Heating and cooling systems Whole House and Portable Generators Service upgrades and Panels changes Solar and Battery Systems EV Car Chargers

"Jerry was very communicative and explained everything very clearly. He arrived on time, completed the work quickly, and was affordable. Overall we are very happy with his service!"

Abbygail Z on January 2025

New construction/ Remodels Kitchen and Bathrooms Pools and Spas Heating and cooling systems Whole House and Portable Generators Service upgrades and Panels changes Solar and Battery Systems EV Car Chargers

"Jerry was very communicative and explained everything very clearly. He arrived on time, completed the work quickly, and was affordable. Overall we are very happy with his service!"

Abbygail Z on January 2025


Vertex Contracting Inc.
Located In:
5.00(
5
)
Approved Pro
Vertex Contracting Inc.
Located In:
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
79 local quotes requested

3rd generation electrician. We specialize in re-wiring historical sites, electrical services, repairs, installs, troubleshooting, lighting, panel upgrades, ceiling fans, EV/Electric Charging Stations, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"They are outstanding!"

Jake V on August 2023

3rd generation electrician. We specialize in re-wiring historical sites, electrical services, repairs, installs, troubleshooting, lighting, panel upgrades, ceiling fans, EV/Electric Charging Stations, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"They are outstanding!"

Jake V on August 2023


Avatar for Plymouth Mountain Electric, LLC
Plymouth Mountain Electric, LLC
48 Butternut Ridge
4.80(
5
)
Approved Pro
Plymouth Mountain Electric, LLC
48 Butternut Ridge
4.80(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
7 years of experience

Welcome to Plymouth Mountain Electric! Proudly servicing Grafton and the surrounding counties. Owner and operator, Alex, takes great pride in his professionalism and customer satisfaction. For fast, reliable, and efficient service give us a call today! You won't be disappointed.

"Good job I would call them again"

Melissa H on April 2019

Welcome to Plymouth Mountain Electric! Proudly servicing Grafton and the surrounding counties. Owner and operator, Alex, takes great pride in his professionalism and customer satisfaction. For fast, reliable, and efficient service give us a call today! You won't be disappointed.

"Good job I would call them again"

Melissa H on April 2019


Avatar for Wardtelephone
Wardtelephone
230 North Main Street
5.00(
8
)
Approved Pro
Wardtelephone
230 North Main Street
5.00(
8
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
38 years of experience

Wardtelephone offers an affordable alternative for interior phone service. We can diagnosis problems quickly and save you money. You are not required to use you phone service provider to do interior phone line repairs. This includes copper, fiber optic or wireless systems.

"He answered all my questions and performed the needed work in a timely manner.Will use him again."

George M on November 2015

Wardtelephone offers an affordable alternative for interior phone service. We can diagnosis problems quickly and save you money. You are not required to use you phone service provider to do interior phone line repairs. This includes copper, fiber optic or wireless systems.

"He answered all my questions and performed the needed work in a timely manner.Will use him again."

George M on November 2015



Seventh Gen Solar LLC
26 Oak Street
New on HomeAdvisorNew on Angi
Approved Pro
Seventh Gen Solar LLC
26 Oak Street
New on AngiNew on HomeAdvisor
Approved Pro
5 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!


Avatar for Ourea Solutions
Ourea Solutions
40 Maple St #6
4.88(
8
)
Approved Pro
Ourea Solutions
40 Maple St #6
4.88(
8
)
Approved Pro
Super Service Award
Customers say: Quick response
21 years of experience
Free onsite estimate

We’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"Chris was flexible and worked with my on what type of mount was needed for a large and smaller TV. When he realized neither of us had the size mount needed to properly support the big TV, he went out and got what was required. He was professional, polite and got the job done for a reasonable rate."

Sue L on March 2025

We’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"Chris was flexible and worked with my on what type of mount was needed for a large and smaller TV. When he realized neither of us had the size mount needed to properly support the big TV, he went out and got what was required. He was professional, polite and got the job done for a reasonable rate."

Sue L on March 2025

Showing 1-10 of 41

Generator installations FAQs

Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:

  • Portable generators with 1kW–7.5kW capacity: $500–$2,000

  • Partial generators with 9kW–20kW capacity: $2,000–$6,300

  • Whole-house generators with 22kW–48kW: $5,000–$18,000

When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.

When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 watts

Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running. 

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:

  • Experience frequent or prolonged power outages

  • Work from home

  • Store a lot of cold food

  • Have a sump pump

  • Have a pump for well water

  • Use electronic medical devices

  • Live in a climate requiring heating or cooling

The homeowners guide to generator installations
From average costs to expert advice, get all the answers you need to get your job done.
A portable inverter generator
Mar 3, 2025
Mar 3, 2025
The average cost of a whole-house generator falls between $5,000 and $25,000. Keep reading to learn how much you can expect to spend.
Boy and girl jumping on the couch sofa
Apr 1, 2025
Apr 1, 2025
A whole house generator can keep your home running during a power outage, but can it handle the energy demands of an air conditioner? Here’s what to consider.
A natural gas generator outside a house
Apr 1, 2025
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Natural gas generators emit carbon monoxide, a harmful gas. Learn about what carbon monoxide is and tips to operate your generator safely.
A house generator in the backyard of a house
Apr 1, 2025
Apr 1, 2025
Is a whole-house generator worth it? Discover the key factors influencing ROI and whether it's the right choice for your home.
outdoor diesel power generator
Apr 1, 2025
Apr 1, 2025
Diesel remains a popular fuel option for a variety of home generators, but you will need to plan your maintenance carefully. Here’s how it works.
emergency power supply outside home
Apr 4, 2025
Apr 4, 2025
How much does it cost to run a standby generator? The answer varies based on the type and size of the generator. Find out more.
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