Top-rated generator installers.

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Generator installers in Antrim

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
30 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 Peak Power Solutions
Peak Power Solutions
Local
4.56(
9
)
Approved Pro
Peak Power Solutions
Local
4.56(
9
)
Approved Pro
Customers say: Quick response
58 local quotes requested
7 years of experience

We believe in providing the highest quality electrical work and customer service. Peak Power Solutions LLC is family a owned and operated business and have all intentions of treating every customer as our family!

"Awesome team"

Alison W on May 2025

We believe in providing the highest quality electrical work and customer service. Peak Power Solutions LLC is family a owned and operated business and have all intentions of treating every customer as our family!

"Awesome team"

Alison W on May 2025


Preferred Electrical Services, LLC
3.00(
2
)
Approved Pro
Preferred Electrical Services, LLC
3.00(
2
)
Approved Pro
57 local quotes requested

We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!

"Matt and all his team are top notch. I have Preferred Electrical perform work for both my business and home, they are trustworthy and provide a high quality service and final installation. All electrical wires and locations are clearly marked thoroughly and complete, with the utmost organization."

Earl D on May 2024

We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!

"Matt and all his team are top notch. I have Preferred Electrical perform work for both my business and home, they are trustworthy and provide a high quality service and final installation. All electrical wires and locations are clearly marked thoroughly and complete, with the utmost organization."

Earl D on May 2024


Avatar for Progressive Consulting
Progressive Consulting
187 Juniper Ridge
4.95(
14
)
Approved Pro
Progressive Consulting
187 Juniper Ridge
4.95(
14
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

Progressive Consulting provides voice and data communication solutions to businesses and homes with as few as 2 lines to over 200 lines from infrastructure to application with all the peripheral equipment needed to comprise a total solution. We provide Voice, Data, and Video Surveillance Systems, Equipment, Service, and Installation. Whether you need a custom solution or an "out of the box" system, we can bring you from concept to fruition Our technicians have over 35 years of experience in the communication field and project management and execution experience from infrastructure cabling and outside plant to application implementation across all business sizes from Small Business to Multi-National corporations. We certified on many brands and models of equipment and work on all major manufacturer commercial telephone systems and networking equipment. Service is our specialty and quality is our standard.

"Very friendly and professional; i have an old system he got me back up and running!"

Terri K on April 2020

Progressive Consulting provides voice and data communication solutions to businesses and homes with as few as 2 lines to over 200 lines from infrastructure to application with all the peripheral equipment needed to comprise a total solution. We provide Voice, Data, and Video Surveillance Systems, Equipment, Service, and Installation. Whether you need a custom solution or an "out of the box" system, we can bring you from concept to fruition Our technicians have over 35 years of experience in the communication field and project management and execution experience from infrastructure cabling and outside plant to application implementation across all business sizes from Small Business to Multi-National corporations. We certified on many brands and models of equipment and work on all major manufacturer commercial telephone systems and networking equipment. Service is our specialty and quality is our standard.

"Very friendly and professional; i have an old system he got me back up and running!"

Terri K on April 2020


Avatar for Brandywine Technical Partners, Inc.
Brandywine Technical Partners, Inc.
40 Lowell Road Unit 1
New on HomeAdvisorNew on Angi
Approved Pro
Brandywine Technical Partners, Inc.
40 Lowell Road Unit 1
New on AngiNew on HomeAdvisor
Approved Pro
23 years of experience
Free onsite estimate

We offer over 20 years' experience in the Telecommunication and Security services industry. We've established a solid reputation in security projects for commercial companies. We are committed to providing a personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction. Call today for a free estimate.

We offer over 20 years' experience in the Telecommunication and Security services industry. We've established a solid reputation in security projects for commercial companies. We are committed to providing a personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction. Call today for a free estimate.


Avatar for Digital City Technology, Inc.
Digital City Technology, Inc.
68 Mountain Gate Road
5.00(
5
)
Approved Pro
Digital City Technology, Inc.
68 Mountain Gate Road
5.00(
5
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
13 years of experience

Digital City Technology, Inc. (Digital City) is based in Ashland, MA, supporting greater Boston and New England since 2008. We are a Telecommunications, Network, Low Voltage and Fiber Optic professional service provider. Digital City installs VOIP Phone systems, LAN/WAN, IP Surveillance and Audio/Visual Systems. We specialize in Phone/Internet cutovers, Data Center installations, Network and System design, CAT 5 & 6 and Fiber Optic cabling, Structured Cabling and Wireless Internet implementation. Digital City has participated in Technology Roll-outs for Fortune 500 companies and performed Technology, Network and Wi-Fi deployments, VOIP installs etc. Our main goal is to provide cost-justifiable, top quality IT services designed to meet business, customer and user demands.

"Low voltage work was clean and labeled!"

Shane H on February 2020

Digital City Technology, Inc. (Digital City) is based in Ashland, MA, supporting greater Boston and New England since 2008. We are a Telecommunications, Network, Low Voltage and Fiber Optic professional service provider. Digital City installs VOIP Phone systems, LAN/WAN, IP Surveillance and Audio/Visual Systems. We specialize in Phone/Internet cutovers, Data Center installations, Network and System design, CAT 5 & 6 and Fiber Optic cabling, Structured Cabling and Wireless Internet implementation. Digital City has participated in Technology Roll-outs for Fortune 500 companies and performed Technology, Network and Wi-Fi deployments, VOIP installs etc. Our main goal is to provide cost-justifiable, top quality IT services designed to meet business, customer and user demands.

"Low voltage work was clean and labeled!"

Shane H on February 2020


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



Avatar for PRECISE ELECTRIC
PRECISE ELECTRIC
180 Mapleton Road
4.89(
41
)
Approved Pro
PRECISE ELECTRIC
180 Mapleton Road
4.89(
41
)
Approved Pro
Customers say: Quality work
3 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality and customer service that we provide to meet your needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"James did a great job. Very responsive, showed up as promised. Coordinated “off” and “on” power with the utility for updating the service entrance. Cleaned up after. Highly recommend. "

Charles W on May 2025

We take great pride in our experience, expertise, quality and customer service that we provide to meet your needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"James did a great job. Very responsive, showed up as promised. Coordinated “off” and “on” power with the utility for updating the service entrance. Cleaned up after. Highly recommend. "

Charles W on May 2025


Avatar for Generator Supercenter of New Hampshire
Generator Supercenter of New Hampshire
28 Portsmouth Ave
4.93(
30
)
Approved Pro
Generator Supercenter of New Hampshire
28 Portsmouth Ave
4.93(
30
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
35 local quotes requested

Generator Supercenter of New Hampshire is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. As a father and son-owned business, we’re committed to the best service. When you call us, our estimates are free, so you can meet with a member of our team to learn about your options with no strings attached!

"I want to thank the staff at the Stratham NH location. As a new customer, we got off to a bad start with a scheduling misunderstanding. After my earlier review, I want to acknowledge that they reached out to me to turn a negative experience into a positive one. It's nice to know that this company cares about their customers. I am very happy with the service they performed on my recent Generac generator. The customer service department and the technician were very professional and courteous. I would recommend this company for your generator needs."

Roger C on August 2024

Generator Supercenter of New Hampshire is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. As a father and son-owned business, we’re committed to the best service. When you call us, our estimates are free, so you can meet with a member of our team to learn about your options with no strings attached!

"I want to thank the staff at the Stratham NH location. As a new customer, we got off to a bad start with a scheduling misunderstanding. After my earlier review, I want to acknowledge that they reached out to me to turn a negative experience into a positive one. It's nice to know that this company cares about their customers. I am very happy with the service they performed on my recent Generac generator. The customer service department and the technician were very professional and courteous. I would recommend this company for your generator needs."

Roger C on August 2024

Showing 1-10 of 27

FAQs for generator installation projects in Antrim, NH

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 Antrim, NH homeowners’ guide to generator installations
From average costs to expert advice, get all the answers you need to get your job done.
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Whole house generator sizing can be tricky to figure out if you don’t know a few key factors. Our guide can help you determine what size works best for your needs.
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