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There are 5 highly-rated local generator install pros.

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    Verified generator installs reviews

Find Generator install pros in Dennis

Avatar for Cotti-Johnson Heating-Cooling-Electrical

Cotti-Johnson Heating-Cooling-Electrical

30 Waverly St
4.68(
155
)
Approved Pro

Cotti-Johnson Heating-Cooling-Electrical

30 Waverly St
4.68(
155
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
964 local quotes requested

Experiencing issues with your heating, air conditioning, plumbing, or electrical systems? Cotti-Johnson is your reliable one-stop shop for all home comfort needs. From simple fixes to large-scale projects, our professional team handles everything with honesty and expertise. We offer 24/7 emergency services and specialized design services for landscape and indoor lighting. Trust us for top-notch, efficient, and transparent service. Visit our website at callcotti.com or call us at (833) 826-8844 to see how we can improve your home's comfort and efficiency.

"Happy with the work, and the customer service. Will definitely call on them for future work."

Fran P on June 2025

Experiencing issues with your heating, air conditioning, plumbing, or electrical systems? Cotti-Johnson is your reliable one-stop shop for all home comfort needs. From simple fixes to large-scale projects, our professional team handles everything with honesty and expertise. We offer 24/7 emergency services and specialized design services for landscape and indoor lighting. Trust us for top-notch, efficient, and transparent service. Visit our website at callcotti.com or call us at (833) 826-8844 to see how we can improve your home's comfort and efficiency.

"Happy with the work, and the customer service. Will definitely call on them for future work."

Fran P on June 2025


Avatar for Mr Cape Electrician

Mr Cape Electrician

Located In:
4.63(
8
)
Approved Pro

Mr Cape Electrician

Located In:
4.63(
8
)
Approved Pro
Customers say: Quick response
67 local quotes requested
5 years of experience

Mr Cape Electrician: Your Trusted Electrical Expert For years, Mr Cape Electrician has been the leading electrical service provider in the region, offering a unique blend of comprehensive expertise, cutting-edge solutions, and a commitment to quality. As a family-owned business, we've built a reputation on precision, reliability, and putting the customer first. Whether you're exploring the benefits of smart home systems, need a quick outlet replacement, or embarking on a major commercial rewiring project, our team has the skill and dedication to light up your world. Our portfolio boasts a wide range of services, including residential wiring, advanced smart home solutions, electric car charger setups, and commercial electrical solutions. Each member of our crew is trained to be detail-oriented, ensuring every project meets the highest safety and quality standards. And while our expertise stands out, it's our approach to customer service that truly sets us apart. We believe in transparent flat-rate prices, always ensuring our customers know what to expect. We understand the changing dynamics of the electrical world and pride ourselves on staying ahead of the curve. Our commitment doesn't end when the job is done – with our yearly subscription service plans, we offer a lifetime warranty on labor, ensuring you have peace of mind for years to come. Choose Mr Cape Electrician for a brighter, safer, and smarter tomorrow. Reach out today and experience the difference!

"The crew left without finishing the project which admittedly was a large scope of complicated mess left by the previous contractor who had drinking problems, but they knew that coming in. The main thing I asked the folks to do was to make sure heating works, that was priority #1, this is what they left in October when disappeared: - Heating main room, the first floor, only one radiator out of 3 working. - Heating second floor living room - none of the radiators were working, - They spend time running new wire to the first floor radiators because they thought the old wire was nicked, apparently nothing was nicked and the new wire wasn't needed at all as well as three 6" holes that they left in ceilings and walls , one of the original wires were just mis-labled that was the reason why heat didn't work - but instead of double checking they went for brute force - lets rewire the thing and didn't even finish that correctly. - Left one room completely without power to the outlets, to add more to that the switch in that same room was wired, but the wire wasn't screwed in at all, it was just taped to the terminal using electrical tape!!! It was shorting when I was moving it around! This is after the crew of 4 people spend 2 days checking all outlets and switches for code compliance. And then there is a ton of small stuff: - 3 way switch weren't wired correctly - closet light not wired Did I try contacting them? Oh yes, - Left 4 emails, 2 voicemails over the course of 6-7 weeks. What did I get back? One email that someone will contact me shortly... of course no-one did contact me shortly not after 1 day, 3 days, 3 weeks. Why am I leaving 2 starts and not one star ? Because the crew did do a lot and a lot of things they did were fine, like they installed CO2/Smokedetectros throughout the house, installed thermostats everywhere, so for small projects they may be great, but nothing that requires time or patience to figure out more complex electrical problems as I guess there is no money to be made in solving complex problems."

Anatoliy I on December 2022

Mr Cape Electrician: Your Trusted Electrical Expert For years, Mr Cape Electrician has been the leading electrical service provider in the region, offering a unique blend of comprehensive expertise, cutting-edge solutions, and a commitment to quality. As a family-owned business, we've built a reputation on precision, reliability, and putting the customer first. Whether you're exploring the benefits of smart home systems, need a quick outlet replacement, or embarking on a major commercial rewiring project, our team has the skill and dedication to light up your world. Our portfolio boasts a wide range of services, including residential wiring, advanced smart home solutions, electric car charger setups, and commercial electrical solutions. Each member of our crew is trained to be detail-oriented, ensuring every project meets the highest safety and quality standards. And while our expertise stands out, it's our approach to customer service that truly sets us apart. We believe in transparent flat-rate prices, always ensuring our customers know what to expect. We understand the changing dynamics of the electrical world and pride ourselves on staying ahead of the curve. Our commitment doesn't end when the job is done – with our yearly subscription service plans, we offer a lifetime warranty on labor, ensuring you have peace of mind for years to come. Choose Mr Cape Electrician for a brighter, safer, and smarter tomorrow. Reach out today and experience the difference!

"The crew left without finishing the project which admittedly was a large scope of complicated mess left by the previous contractor who had drinking problems, but they knew that coming in. The main thing I asked the folks to do was to make sure heating works, that was priority #1, this is what they left in October when disappeared: - Heating main room, the first floor, only one radiator out of 3 working. - Heating second floor living room - none of the radiators were working, - They spend time running new wire to the first floor radiators because they thought the old wire was nicked, apparently nothing was nicked and the new wire wasn't needed at all as well as three 6" holes that they left in ceilings and walls , one of the original wires were just mis-labled that was the reason why heat didn't work - but instead of double checking they went for brute force - lets rewire the thing and didn't even finish that correctly. - Left one room completely without power to the outlets, to add more to that the switch in that same room was wired, but the wire wasn't screwed in at all, it was just taped to the terminal using electrical tape!!! It was shorting when I was moving it around! This is after the crew of 4 people spend 2 days checking all outlets and switches for code compliance. And then there is a ton of small stuff: - 3 way switch weren't wired correctly - closet light not wired Did I try contacting them? Oh yes, - Left 4 emails, 2 voicemails over the course of 6-7 weeks. What did I get back? One email that someone will contact me shortly... of course no-one did contact me shortly not after 1 day, 3 days, 3 weeks. Why am I leaving 2 starts and not one star ? Because the crew did do a lot and a lot of things they did were fine, like they installed CO2/Smokedetectros throughout the house, installed thermostats everywhere, so for small projects they may be great, but nothing that requires time or patience to figure out more complex electrical problems as I guess there is no money to be made in solving complex problems."

Anatoliy I on December 2022


Avatar for Marcelo R. Soares Electrician

Marcelo R. Soares Electrician

10 Woodspring Farm Lane
5.00(
8
)
Approved Pro

Marcelo R. Soares Electrician

10 Woodspring Farm Lane
5.00(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
32 local quotes requested

I offer a variety of electrical services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!

"Marcelo was fantastic. Responsive, knowledgeable, very friendly and punctual. He diagnosed the problem right away, fixed it on the spot with minimal cost. I would highly recommend him for any job!!"

Donald T on June 2025

I offer a variety of electrical services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!

"Marcelo was fantastic. Responsive, knowledgeable, very friendly and punctual. He diagnosed the problem right away, fixed it on the spot with minimal cost. I would highly recommend him for any job!!"

Donald T on June 2025


Avatar for FM Generator

FM Generator

35 Pequit St
4.70(
20
)
Approved Pro

FM Generator

35 Pequit St
4.70(
20
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
38 local quotes requested

We are a full-service home generator provider offering turnkey residential installations, service contracts, and emergency response, we also install whole home backup batteries.***WE DO NOT SERVICE PORTABLE GENERATORS** Family owned and operated, we have sold, installed and serviced generators for over 40 years! Our history is working with commercial generators, so we know the importance of reliability! Reliability is our product which is why we sell Fortress, an exclusive Briggs and Stratton brand of home generators. We can even save you money on a smaller generator with the Symphony II Home Power Management System! FM Generator - Keeping Families Powered for over 40 years! **Fully installed automatic home power system packages starting at $7,500**

"They were able to send someone to the house within a few days of initial contact. He wasn’t able to troubleshoot the problem directly but he was able to reach out to someone who could and everything was taken care of quickly and efficiently. Would absolutely contact them again in the future!"

Amanda F on January 2025

We are a full-service home generator provider offering turnkey residential installations, service contracts, and emergency response, we also install whole home backup batteries.***WE DO NOT SERVICE PORTABLE GENERATORS** Family owned and operated, we have sold, installed and serviced generators for over 40 years! Our history is working with commercial generators, so we know the importance of reliability! Reliability is our product which is why we sell Fortress, an exclusive Briggs and Stratton brand of home generators. We can even save you money on a smaller generator with the Symphony II Home Power Management System! FM Generator - Keeping Families Powered for over 40 years! **Fully installed automatic home power system packages starting at $7,500**

"They were able to send someone to the house within a few days of initial contact. He wasn’t able to troubleshoot the problem directly but he was able to reach out to someone who could and everything was taken care of quickly and efficiently. Would absolutely contact them again in the future!"

Amanda F on January 2025


Avatar for NAX Electrical Services, LLC

NAX Electrical Services, LLC

1070 Iyannough Rd #311
4.36(
7
)
Approved Pro

NAX Electrical Services, LLC

1070 Iyannough Rd #311
4.36(
7
)
Approved Pro
Customers say: Quick response
3 years of experience
Emergency services offered

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! 508-296-0552

"Great job done"

William B on August 2022

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! 508-296-0552

"Great job done"

William B on August 2022


Avatar for East West Associates, LLC

East West Associates, LLC

PO Box 86
5.00(
3
)
Approved Pro

East West Associates, LLC

PO Box 86
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

We pride our company on reliability, great communication, integrity and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business.

"A very nice young professional who knows his stuff and puts your mind at ease when dealing with sophisticated electronics. I highly recommend him for Seniors who just can t manage all this technology. Also,very polite!"

David W on June 2020

We pride our company on reliability, great communication, integrity and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business.

"A very nice young professional who knows his stuff and puts your mind at ease when dealing with sophisticated electronics. I highly recommend him for Seniors who just can t manage all this technology. Also,very polite!"

David W on June 2020


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 JP Mechanical Contractors, LLC

JP Mechanical Contractors, LLC

97 Chuckles Way
5.00(
3
)
Approved Pro

JP Mechanical Contractors, LLC

97 Chuckles Way
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 years of experience

JP Mechanical Contractors LLC 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 10 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!

"Julius was very professional and returned all calls and questions promptly …. We enjoyed meeting him and when he said he was going to follow up on anything we needed, he did… We highly recommend using JP Mechanical Contractors… If the need to use this company again comes up, , we certainly would call Julius… Danka Piekarski"

Danka P on June 2021

JP Mechanical Contractors LLC 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 10 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!

"Julius was very professional and returned all calls and questions promptly …. We enjoyed meeting him and when he said he was going to follow up on anything we needed, he did… We highly recommend using JP Mechanical Contractors… If the need to use this company again comes up, , we certainly would call Julius… Danka Piekarski"

Danka P on June 2021


Springer Electric, Inc.

70 Bishops Terrace
5.00(
3
)
Approved Pro

Springer Electric, Inc.

70 Bishops Terrace
5.00(
3
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 years of experience

We have over 15 years of experience serving Barnstable county with all of their electrical needs. We take on a wide range of electrical projects to include full installation for additions and remodels as well as generator installs, service change-outs and panel upgrades, and a variety of other jobs. We take pride in our quality of work and our commitment to outstanding results. Our services are customizable based on the specific project needs of each homeowner and business. We look forward to building strong, long-term relationships with all of our clients. Give us a call today to learn about how we can meet all of your electrical needs!

"Springer Electric team ( Dave, Nick, Zack) worked at my home doing full upgrade of all electrical on my basement. Additionally added outlets, fixed light fixtures and added over 7 smoke carbon alarms. They did a superior job! They show up on time and on schedule. They are all professional, respectful, efficient, knowledgeable and very experienced. They cover the floors and do a thorough cleanup too. I have had them do work on my home over the last 15 years. Nancy"

Nancy C on September 2024

We have over 15 years of experience serving Barnstable county with all of their electrical needs. We take on a wide range of electrical projects to include full installation for additions and remodels as well as generator installs, service change-outs and panel upgrades, and a variety of other jobs. We take pride in our quality of work and our commitment to outstanding results. Our services are customizable based on the specific project needs of each homeowner and business. We look forward to building strong, long-term relationships with all of our clients. Give us a call today to learn about how we can meet all of your electrical needs!

"Springer Electric team ( Dave, Nick, Zack) worked at my home doing full upgrade of all electrical on my basement. Additionally added outlets, fixed light fixtures and added over 7 smoke carbon alarms. They did a superior job! They show up on time and on schedule. They are all professional, respectful, efficient, knowledgeable and very experienced. They cover the floors and do a thorough cleanup too. I have had them do work on my home over the last 15 years. Nancy"

Nancy C on September 2024


Avatar for Paul Foley Electric Co., Inc.

Paul Foley Electric Co., Inc.

PO Box 308
4.83(
74
)
Approved Pro

Paul Foley Electric Co., Inc.

PO Box 308
4.83(
74
)
Approved Pro
Customers say: Quality work
162 local quotes requested
33 years of experience

When it comes to generators we exclusively install Kohler® Generators, with the best method of installation available and a serious dedication to customer care. We believe strongly in a commitment to our customers and our reputation and the reliability of our work is what we base our business on. We choose to exclusively deal in Kohler® Generators because our experience has been that their quality, longevity and warranties are second-to-none. We simply believe that other manufacturers on the market do no provide the same quality and commitment to longevity as Kohler®. Starting in 1992 as a licensed electrical contracting company, we have built a business based on the concept of putting quality and our relationship with our customers first. We are a fully licensed electrical company that is your 'one-stop solution' for your home or business' emergency power needs.

"This is Topnotch company! Every person that I encountered was amazingly helpful and attentive to my needs and questions. The first employee I met was Brandon, who provided me with a professional approach to the generator proposal and a folder of their work done properly and pics of generators the were not installed properly. Jeannie in the office was patient and curious, delivering information that I asked her to pass on. The responses to my questions were quick and answered thoroughly. The installation team was on site exactly when they said they would be there. The team was all business and when they were done with the job they cleaned everything up including reseeding areas of grass that needed to be replaced. If you are looking for excellence, you need not go any further than Paul Foley inc. you will be happy with them!"

Eugene E on April 2021

When it comes to generators we exclusively install Kohler® Generators, with the best method of installation available and a serious dedication to customer care. We believe strongly in a commitment to our customers and our reputation and the reliability of our work is what we base our business on. We choose to exclusively deal in Kohler® Generators because our experience has been that their quality, longevity and warranties are second-to-none. We simply believe that other manufacturers on the market do no provide the same quality and commitment to longevity as Kohler®. Starting in 1992 as a licensed electrical contracting company, we have built a business based on the concept of putting quality and our relationship with our customers first. We are a fully licensed electrical company that is your 'one-stop solution' for your home or business' emergency power needs.

"This is Topnotch company! Every person that I encountered was amazingly helpful and attentive to my needs and questions. The first employee I met was Brandon, who provided me with a professional approach to the generator proposal and a folder of their work done properly and pics of generators the were not installed properly. Jeannie in the office was patient and curious, delivering information that I asked her to pass on. The responses to my questions were quick and answered thoroughly. The installation team was on site exactly when they said they would be there. The team was all business and when they were done with the job they cleaned everything up including reseeding areas of grass that needed to be replaced. If you are looking for excellence, you need not go any further than Paul Foley inc. you will be happy with them!"

Eugene E on April 2021

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Generator Install questions, answered by experts

In many cases, yes. There are models called dual-fuel generators and fuel switches, but only between certain types of fuel. For example, with the right setup you can convert a generator from natural gas to propane. Some allow switching between diesel and gasoline. There are even tri-fuel generators available in some cases, which adds a large layer of security if you are worried about fuel availability in times of crisis. Always check your generator capabilities and manual instructions before trying to switch fuels. Some generators can use another fuel but may need a fuel conversion kit to prep them first.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

Most homeowners won't be able to claim a home generator as a tax write-off. However, a whole-house generator may be tax-deductible in certain situations depending on its purpose. For instance, if it's needed to power essential medical equipment, it may qualify as a medical expense deduction. Also, in some cases, businesses can deduct a generator as a business expense if it supports operations. Always consult a tax professional to determine eligibility based on your specific circumstances and the applicable IRS regulations.

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

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The Dennis, MA homeowners’ guide to generator installs

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