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Average homeowner rating star icon4.8
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Generator installers in Andover

Avatar for HARP Home Services LLC
HARP Home Services LLC
863 Marshall Phelps Rd
4.57(
444
)
Approved Pro
HARP Home Services LLC
863 Marshall Phelps Rd
4.57(
444
)
Approved Pro
Customers say: Super punctual
155 local quotes requested
33 years of experience

We joined Angie's List in August of 2007 and have earned their Super Service Award every year since 2009 when they started that program. HARP Home Services, LLC is here to take care of all your heating and air conditioning needs. Whether you are looking for a free quote on a new central air conditioning system or are ready to install radiant floor heating or a new boiler for those chilly winter months, we're just a phone call (or e-mail) away. Residential & Commercial.

"We had a furnace installed by Harp on July 8th 2024 after it being diagnosed by their technician as to the reason our ac system was not functioning properly. That’s when our troubles with Harp began. The installation was not done properly, we needed 3 service calls to get the ac to work properly. The installers were sloppy. We cleaned up screws and wire and parts from the old furnace for weeks. When heating season began we noticed that the humidifier installed with the furnace was not operating. We scheduled an appointment to have it repaired and they called the day of the appointment and told us they couldn’t come that day and we had to reschedule, so reluctantly we did. They finally came and repaired it. From what the technician told me it was not wired properly. On January 21st 2025( the coldest night of the year) the furnace stopped working. We called Harp to get someone to come to repair it as we had no heat in below 0º weather I was told the best they could do is to come the next day between 2 and 6 pm. I tried to explain that this was an emergency but to no avail. I called my local oil company and they were at my door within 30 minutes( which I would’ve expected from the company who sold us the furnace) the repaired it quickly and told us that one f the wires on the control panel was not attached properly. It cost me $300. I would NOT recommend Harp to anyone. They are not reliable and do not stand behind their promises of service 24/7. Stay as far away from this company as possible. We are sorry we ever started with them."

john j on January 2025

We joined Angie's List in August of 2007 and have earned their Super Service Award every year since 2009 when they started that program. HARP Home Services, LLC is here to take care of all your heating and air conditioning needs. Whether you are looking for a free quote on a new central air conditioning system or are ready to install radiant floor heating or a new boiler for those chilly winter months, we're just a phone call (or e-mail) away. Residential & Commercial.

"We had a furnace installed by Harp on July 8th 2024 after it being diagnosed by their technician as to the reason our ac system was not functioning properly. That’s when our troubles with Harp began. The installation was not done properly, we needed 3 service calls to get the ac to work properly. The installers were sloppy. We cleaned up screws and wire and parts from the old furnace for weeks. When heating season began we noticed that the humidifier installed with the furnace was not operating. We scheduled an appointment to have it repaired and they called the day of the appointment and told us they couldn’t come that day and we had to reschedule, so reluctantly we did. They finally came and repaired it. From what the technician told me it was not wired properly. On January 21st 2025( the coldest night of the year) the furnace stopped working. We called Harp to get someone to come to repair it as we had no heat in below 0º weather I was told the best they could do is to come the next day between 2 and 6 pm. I tried to explain that this was an emergency but to no avail. I called my local oil company and they were at my door within 30 minutes( which I would’ve expected from the company who sold us the furnace) the repaired it quickly and told us that one f the wires on the control panel was not attached properly. It cost me $300. I would NOT recommend Harp to anyone. They are not reliable and do not stand behind their promises of service 24/7. Stay as far away from this company as possible. We are sorry we ever started with them."

john j on January 2025


Avatar for Cannon Electric LLC
Cannon Electric LLC
5.00(
17
)
Approved Pro
Cannon Electric LLC
5.00(
17
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
63 local quotes requested

Our team is led by a master electrician with over 34 years of experience in the electrical and construction industries. With our founder personally overseeing each project, we ensure the highest level of expertise and hands-on attention to detail. Every team member shares the same passion for providing honest, top-quality service. We work closely with our customers, offering customized solutions for both residential and commercial electrical needs. We approach every job with care and professionalism. When you’re looking for electrical contractors, you want a company that offers both expertise and integrity. With over 34 years of our founder’s experience, we are proud to deliver dependable electrical services that meet the highest standards. We stand out because we truly care about providing the best value to our customers. We don’t cut corners or upsell unnecessary services; instead, we focus on honest pricing and high-quality materials.

"Tim and Stacy got us into their schedule very quickly, and Tim did a very nice job installing our new outlet. He did quality work and restored everything well. The price of the project was reasonable and was right on track with the initial estimate."

Michael W on February 2025

Our team is led by a master electrician with over 34 years of experience in the electrical and construction industries. With our founder personally overseeing each project, we ensure the highest level of expertise and hands-on attention to detail. Every team member shares the same passion for providing honest, top-quality service. We work closely with our customers, offering customized solutions for both residential and commercial electrical needs. We approach every job with care and professionalism. When you’re looking for electrical contractors, you want a company that offers both expertise and integrity. With over 34 years of our founder’s experience, we are proud to deliver dependable electrical services that meet the highest standards. We stand out because we truly care about providing the best value to our customers. We don’t cut corners or upsell unnecessary services; instead, we focus on honest pricing and high-quality materials.

"Tim and Stacy got us into their schedule very quickly, and Tim did a very nice job installing our new outlet. He did quality work and restored everything well. The price of the project was reasonable and was right on track with the initial estimate."

Michael W on February 2025


Jennings Electric
1764 Main St.
5.00(
2
)
Approved Pro
Jennings Electric
1764 Main St.
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 years of experience

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the 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 in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"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."

Priscilla P on December 2022

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the 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 in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"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."

Priscilla P on December 2022


Avatar for Clear Electrical Solutions, LLC
Clear Electrical Solutions, LLC
8 Volpi Road
5.00(
5
)
Approved Pro
Clear Electrical Solutions, LLC
8 Volpi Road
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 years of experience

We are committed to customer satisfaction at a reasonable price. Providing residential, and commercial electrical services for all of Connecticut. We look forward to earning your business.

"On time. Under budget. Quick to respond. Courteous. Conscientious. Knows what he's doing. Took the time to vacuum up after completion. Everything works. Came up with less costly options. Took notes when we initially spoke and knew exactly what to do when he arrived. Just an "honest-a-goodness" hard working person whom I'd highly recommend."

Tak S on June 2020

We are committed to customer satisfaction at a reasonable price. Providing residential, and commercial electrical services for all of Connecticut. We look forward to earning your business.

"On time. Under budget. Quick to respond. Courteous. Conscientious. Knows what he's doing. Took the time to vacuum up after completion. Everything works. Came up with less costly options. Took notes when we initially spoke and knew exactly what to do when he arrived. Just an "honest-a-goodness" hard working person whom I'd highly recommend."

Tak S on June 2020


Avatar for Extel Communications, Inc.
Extel Communications, Inc.
953 Tunxis Hill Road
4.96(
37
)
Approved Pro
Extel Communications, Inc.
953 Tunxis Hill Road
4.96(
37
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
38 years of experience

We're a local family-owned and operated business started in 1987 with hundreds of satisfied customers throughout Connecticut and New York. We install and maintain hosted-cloud and on-premise telephone systems and provide service for your existing telephone system. Additionally, we offer telco & cable company network services, troubleshoot WiFi issues including installing wireless access points for WiFi connectivity, install data, fiber and voice cabling, security cameras and computer networks. Contact us today for a no charge, no obligation survey for all of your telecom and data needs!

"Immediate response. Expert, knowledgeable work. Excellent customer service. Very reasonable price. Would hire them again without question."

Brian M on December 2023

We're a local family-owned and operated business started in 1987 with hundreds of satisfied customers throughout Connecticut and New York. We install and maintain hosted-cloud and on-premise telephone systems and provide service for your existing telephone system. Additionally, we offer telco & cable company network services, troubleshoot WiFi issues including installing wireless access points for WiFi connectivity, install data, fiber and voice cabling, security cameras and computer networks. Contact us today for a no charge, no obligation survey for all of your telecom and data needs!

"Immediate response. Expert, knowledgeable work. Excellent customer service. Very reasonable price. Would hire them again without question."

Brian M on December 2023


Avatar for W B Lightning Rods
W B Lightning Rods
560 Peoples Plaza Unit 234
4.93(
297
)
Approved Pro
W B Lightning Rods
560 Peoples Plaza Unit 234
4.93(
297
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
117 local quotes requested

WB Lightning Rods is a third-generation lightning protection contractor. Family Owned and operated for over 60 years. installing U.L. Listed Lightning protection systems, All Over the East coast, Midwest south east and south west regions of the U.S. Installations on Residential Homes, Estate Properties, Agricultural and Equestrian Properties. Lightning Protection for trees is also available. No job to big or small References upon Request. Contact us today for a no cost or obligation estimate. We look forward to working with you on your Lightning Protection Project. Thank you. **WE ARE NOT ELECTRICIANS** **WE ONLY INSTALL LIGHTNING PROTECTION SYSTEMS **

"Great company, they were fast, friendly, & accommodating. I would definitely use them again."

Jennifer B on October 2024

WB Lightning Rods is a third-generation lightning protection contractor. Family Owned and operated for over 60 years. installing U.L. Listed Lightning protection systems, All Over the East coast, Midwest south east and south west regions of the U.S. Installations on Residential Homes, Estate Properties, Agricultural and Equestrian Properties. Lightning Protection for trees is also available. No job to big or small References upon Request. Contact us today for a no cost or obligation estimate. We look forward to working with you on your Lightning Protection Project. Thank you. **WE ARE NOT ELECTRICIANS** **WE ONLY INSTALL LIGHTNING PROTECTION SYSTEMS **

"Great company, they were fast, friendly, & accommodating. I would definitely use them again."

Jennifer B on October 2024


Avatar for Crown Joules Electric, LLC
Crown Joules Electric, LLC
182 South Main Street
4.97(
43
)
Approved Pro
Crown Joules Electric, LLC
182 South Main Street
4.97(
43
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
35 local quotes requested

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! Book with us online or feel free to give us a call today

"Yes, Juan was on-time, professional and quickly fixed my broken light switch. On top of all that, he was personable too. Will definitely call him again for any future electrical problems. Highly recommend."

Susan T on March 2025

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! Book with us online or feel free to give us a call today

"Yes, Juan was on-time, professional and quickly fixed my broken light switch. On top of all that, he was personable too. Will definitely call him again for any future electrical problems. Highly recommend."

Susan T on March 2025


Avatar for MB Industries, LLC
MB Industries, LLC
105 Spring Garden St
5.00(
3
)
Approved Pro
MB Industries, LLC
105 Spring Garden St
5.00(
3
)
Approved Pro
102 local quotes requested
3 years of experience

MB Industries LLC 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.

"He was very friendly and explained the job after he was done."

SHARELL R on March 2025

MB Industries LLC 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.

"He was very friendly and explained the job after he was done."

SHARELL R on March 2025


Avatar for MT Electric, LLC
MT Electric, LLC
740 N River Rd
5.00(
23
)
Approved Pro
MT Electric, LLC
740 N River Rd
5.00(
23
)
Approved Pro
Customers say: Quick response
9 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!

"Mark was very knowledgeable about what needed to be done to be up to standards & code. The estimate to the job completion was done in a very appropriate time. He was responsive to all questions prior to and during the job! We couldn’t be happier with our panel upgrade that allowed us to get our generator hooked up!"

Alyssa I on April 2025

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!

"Mark was very knowledgeable about what needed to be done to be up to standards & code. The estimate to the job completion was done in a very appropriate time. He was responsive to all questions prior to and during the job! We couldn’t be happier with our panel upgrade that allowed us to get our generator hooked up!"

Alyssa I on April 2025


JS Royalty LLC
No reviews
JS Royalty LLC
No reviews

Electrical Services Solar Panel Cleaning Services Roof Leak Services Roof Cleaning Services

Electrical Services Solar Panel Cleaning Services Roof Leak Services Roof Cleaning Services

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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.
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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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