Top-rated generator install pros.

Get matched with top generator install pros in Stamford, CT

There are 11 highly-rated local generator install pros.

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    Verified generator installs reviews

Generator install pros in Stamford

Avatar for Costanzo Electrical & Mechanical, LLC

Costanzo Electrical & Mechanical, LLC

161 Lake Drive West
4.80(
90
)
Approved Pro

Costanzo Electrical & Mechanical, LLC

161 Lake Drive West
4.80(
90
)
Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
66 local quotes requested

We are a full service Electrical contracator in both residental and commercial. Our motto is "No Problems, Just Solutions." We take this very serious. We have found by taking time to find out our customers needs and wants that there is always a way to meet their expectations. We mean it when we say there is no job to small, if you have an electrical need we want to be there to help.We are licensed, fully insured and bonded. You can find us on facebook, twitter, and our website has pictures and testimonials. We provide free estimates, so gives us a call today!

"I rarely take the time to write reviews. But I must say, August Costanzo, his son who works with him, and their secretary Lisa have been an absolute pleasure to deal with. I received prompt replies after normal business hours, and August even sent me an unprompted e-mail on the 4th of July asking me details of the EV charger I needed installed. I had a small issue with paperwork on the install day, and not only did Lisa follow up on the paperwork, it was all ready and the job was done the next business day, with absolutely perfect work and a very clean install - and I take my electronic installs seriously. August gave me the most reasonable estimate out of 4 estimates, beat the next lowest estimate by 35%, and did fantastic work, all while taking care of the permits. Lisa, his secretary, will bend over backwards to help you, also responding to calls after hours. I can NOT recommend Costanzo Electrical enough. I wish I could give TEN stars."

Michael N on July 2025

We are a full service Electrical contracator in both residental and commercial. Our motto is "No Problems, Just Solutions." We take this very serious. We have found by taking time to find out our customers needs and wants that there is always a way to meet their expectations. We mean it when we say there is no job to small, if you have an electrical need we want to be there to help.We are licensed, fully insured and bonded. You can find us on facebook, twitter, and our website has pictures and testimonials. We provide free estimates, so gives us a call today!

"I rarely take the time to write reviews. But I must say, August Costanzo, his son who works with him, and their secretary Lisa have been an absolute pleasure to deal with. I received prompt replies after normal business hours, and August even sent me an unprompted e-mail on the 4th of July asking me details of the EV charger I needed installed. I had a small issue with paperwork on the install day, and not only did Lisa follow up on the paperwork, it was all ready and the job was done the next business day, with absolutely perfect work and a very clean install - and I take my electronic installs seriously. August gave me the most reasonable estimate out of 4 estimates, beat the next lowest estimate by 35%, and did fantastic work, all while taking care of the permits. Lisa, his secretary, will bend over backwards to help you, also responding to calls after hours. I can NOT recommend Costanzo Electrical enough. I wish I could give TEN stars."

Michael N on July 2025


Avatar for Mazzucco Electric LLC

Mazzucco Electric LLC

PO Box 320342
4.88(
67
)
Approved Pro

Mazzucco Electric LLC

PO Box 320342
4.88(
67
)
Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
36 local quotes requested

Established in 2001, Mazzucco Electric is located in Fairfield County, CT. We are fully licensed and insured electrical contractors that provide all aspects of electrical service. Our goals are to provide responsible, skilled and courteous electrical service on time and for a fair price, Keeping informed with the latest in the industry so you the customer are informed. CT license #191080 Generator supply and installs. 2 employees. Additional email: [email protected].

Established in 2001, Mazzucco Electric is located in Fairfield County, CT. We are fully licensed and insured electrical contractors that provide all aspects of electrical service. Our goals are to provide responsible, skilled and courteous electrical service on time and for a fair price, Keeping informed with the latest in the industry so you the customer are informed. CT license #191080 Generator supply and installs. 2 employees. Additional email: [email protected].


Avatar for Frank's Generator Sales Service & Repair

Frank's Generator Sales Service & Repair

311 Guinea Road
5.00(
18
)
Approved Pro

Frank's Generator Sales Service & Repair

311 Guinea Road
5.00(
18
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
62 local quotes requested

Generator Sales Service & Repair 25 years experience I am a generator specialist tier4 diesel gas propaine. Free estimates emergency service 24-7 I work regularly for the NYS DEP , NYC Power Authority , Hillview Resevour who provides 2 billion gallons of water to most of NYC. I partner with the best electrician in the industry fully lisenced to give you outstanding service.Generac Dealer. I guarantee I will beat any estimate you get by 10% or more. Contact me for a estimate to beat and we will work together to give you outstanding service.

"Title: Outstanding Service – Fast, Professional, and Thorough! I can't say enough great things about Frank Rinaldi! He did an absolutely amazing job diagnosing and repairing my generator. I was completely blown away by how quickly he responded—honestly, I never expected such fast service. Frank showed up promptly, quickly identified the issue, and had everything fixed in no time. Not only was he professional and efficient, but he also went above and beyond by cleaning and servicing the entire generator. The level of care and attention to detail he put into the job was truly impressive. It’s rare to find someone this reliable and dedicated these days. I highly recommend Frank to anyone in need of generator service or repair—he’s a true pro!"

Thomas W on July 2025

Generator Sales Service & Repair 25 years experience I am a generator specialist tier4 diesel gas propaine. Free estimates emergency service 24-7 I work regularly for the NYS DEP , NYC Power Authority , Hillview Resevour who provides 2 billion gallons of water to most of NYC. I partner with the best electrician in the industry fully lisenced to give you outstanding service.Generac Dealer. I guarantee I will beat any estimate you get by 10% or more. Contact me for a estimate to beat and we will work together to give you outstanding service.

"Title: Outstanding Service – Fast, Professional, and Thorough! I can't say enough great things about Frank Rinaldi! He did an absolutely amazing job diagnosing and repairing my generator. I was completely blown away by how quickly he responded—honestly, I never expected such fast service. Frank showed up promptly, quickly identified the issue, and had everything fixed in no time. Not only was he professional and efficient, but he also went above and beyond by cleaning and servicing the entire generator. The level of care and attention to detail he put into the job was truly impressive. It’s rare to find someone this reliable and dedicated these days. I highly recommend Frank to anyone in need of generator service or repair—he’s a true pro!"

Thomas W on July 2025


Avatar for Newgrange Electric Inc.

Newgrange Electric Inc.

111F Roosevelt Ave
4.64(
69
)
Approved Pro

Newgrange Electric Inc.

111F Roosevelt Ave
4.64(
69
)
Approved Pro
Customers say: Super punctual
43 local quotes requested
17 years of experience

Owned & operated by Edward Byrne. Centrally located in NYC, we serve all of Long Island, the five boroughs (NYC, Brooklyn, Queens, Bronx and Staten Island) and Westchester. We offer 24-hour emergency service, free estimates, quick response times, reasonable rates on service calls and competitive pricing on larger jobs.

"They did a great job for me."

Michael D on December 2021

Owned & operated by Edward Byrne. Centrally located in NYC, we serve all of Long Island, the five boroughs (NYC, Brooklyn, Queens, Bronx and Staten Island) and Westchester. We offer 24-hour emergency service, free estimates, quick response times, reasonable rates on service calls and competitive pricing on larger jobs.

"They did a great job for me."

Michael D on December 2021


Avatar for Universe Home Services

Universe Home Services

3782 Merrick Rd
4.53(
444
)
Approved Pro

Universe Home Services

3782 Merrick Rd
4.53(
444
)
Approved Pro
Customers say: Super punctual
788 local quotes requested
71 years of experience

Since 1954, Universe Home Services has been proudly serving the Nassau County community and customers throughout the entire region. With Universe Home Services, one call solves it all! Their highly trained technicians offer everything from heating and air conditioning to plumbing to appliance repair and electrical services on Long Island and beyond. Whether you’re dealing with an inefficient heating system, a noisy air conditioner, clogged toilet, broken dishwasher, or outdated electrical service panel, you can get the fast, affordable service you need with Universe Home Services. They go above and beyond to ensure that you’re completely satisfied with the quality of their work, offering service guarantees and parts and labor guarantees on new HVAC installations. As a family owned and operated company, Universe Home Services believes in top-quality customer service. They always treat you and your property with respect, working quickly, cleanly, and efficiently to minimize your inconvenience and leave your home in pristine condition. With more than 60 years of experience under their belt, and a commitment to unmatched quality, honesty, and expertise, Universe Home Services is the trusted name for heating, air conditioning, electrical, plumbing, and appliance repair on Long Island and beyond! Call today!

"This was the worst experience i have ever had with a company. They came and damaged my house and kept us without AC for days. They admitted to the extensive damage and went weeks before attempting to repair it. The services were never fully completed and they were paid over 90% of the job. I disputed the last 10% and provided overwhelming evidence of their negligence. And after a year their last ditch effort was to send collections letters. Don't walk, RUN from this company. I will provide pics and my my experience to anyone who is planning on using this company. Used to be family owned and was amazing. Second they sold it went downhill fast."

Marshall R on June 2025

Since 1954, Universe Home Services has been proudly serving the Nassau County community and customers throughout the entire region. With Universe Home Services, one call solves it all! Their highly trained technicians offer everything from heating and air conditioning to plumbing to appliance repair and electrical services on Long Island and beyond. Whether you’re dealing with an inefficient heating system, a noisy air conditioner, clogged toilet, broken dishwasher, or outdated electrical service panel, you can get the fast, affordable service you need with Universe Home Services. They go above and beyond to ensure that you’re completely satisfied with the quality of their work, offering service guarantees and parts and labor guarantees on new HVAC installations. As a family owned and operated company, Universe Home Services believes in top-quality customer service. They always treat you and your property with respect, working quickly, cleanly, and efficiently to minimize your inconvenience and leave your home in pristine condition. With more than 60 years of experience under their belt, and a commitment to unmatched quality, honesty, and expertise, Universe Home Services is the trusted name for heating, air conditioning, electrical, plumbing, and appliance repair on Long Island and beyond! Call today!

"This was the worst experience i have ever had with a company. They came and damaged my house and kept us without AC for days. They admitted to the extensive damage and went weeks before attempting to repair it. The services were never fully completed and they were paid over 90% of the job. I disputed the last 10% and provided overwhelming evidence of their negligence. And after a year their last ditch effort was to send collections letters. Don't walk, RUN from this company. I will provide pics and my my experience to anyone who is planning on using this company. Used to be family owned and was amazing. Second they sold it went downhill fast."

Marshall R on June 2025


J.A.C. Electric

40 California Street
4.84(
46
)
Approved Pro

J.A.C. Electric

40 California Street
4.84(
46
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
32 years of experience

J.A.C. Electric is a locally owned and operated company that values honesty, integrity and treats your home as if it were our own. You will find us to be competitively priced, while still paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction. Give us a call today to get your project started!

"We had to reschedule twice but he was very pleasant and completed the job well"

Kendal F on January 2025

J.A.C. Electric is a locally owned and operated company that values honesty, integrity and treats your home as if it were our own. You will find us to be competitively priced, while still paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction. Give us a call today to get your project started!

"We had to reschedule twice but he was very pleasant and completed the job well"

Kendal F on January 2025


Avatar for CD Electric

CD Electric

38 Coppola Terrace
5.00(
4
)
Approved Pro

CD Electric

38 Coppola Terrace
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

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

"He was great, so quick and professional!"

Summer M on May 2024

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

"He was great, so quick and professional!"

Summer M on May 2024


Avatar for E & A Electric

E & A Electric

4 Algonquin Road
5.00(
1
)
Approved Pro

E & A Electric

4 Algonquin Road
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

E&A Electric LLC is a trusted provider of comprehensive electrical services, dedicated to delivering high-quality solutions for residential, commercial, and industrial clients. With a commitment to safety, reliability, and customer satisfaction, our skilled team of licensed electricians is equipped to handle a wide range of electrical projects, from routine maintenance to complex installations.

"Very professional, excellent work, and affordable price."

Jacky R on May 2023

E&A Electric LLC is a trusted provider of comprehensive electrical services, dedicated to delivering high-quality solutions for residential, commercial, and industrial clients. With a commitment to safety, reliability, and customer satisfaction, our skilled team of licensed electricians is equipped to handle a wide range of electrical projects, from routine maintenance to complex installations.

"Very professional, excellent work, and affordable price."

Jacky R on May 2023


Avatar for PNS Holdings

PNS Holdings

64 Alvord Lane
4.82(
11
)
Approved Pro

PNS Holdings

64 Alvord Lane
4.82(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 years of experience

P&S ELECTRICAL CONTRACTORS With over 24 years of residential and commercial electrical experience, as well as PV Solar experience, P&S Electrical Contractors LLC is one of the elite electrical firms in the state of Connecticut. Founded by a father and son (and now a grandson), in Stamford in 2004, P&S has become a trusted company by hundreds of customers, whether for an electrical outlet, or a solar system on your roof. ​ Our mission and commitment is to provide our customers with the most transparent experience, while going above and beyond expectations to achieve 100% customer

"Easy to work with"

Bob F on October 2020

P&S ELECTRICAL CONTRACTORS With over 24 years of residential and commercial electrical experience, as well as PV Solar experience, P&S Electrical Contractors LLC is one of the elite electrical firms in the state of Connecticut. Founded by a father and son (and now a grandson), in Stamford in 2004, P&S has become a trusted company by hundreds of customers, whether for an electrical outlet, or a solar system on your roof. ​ Our mission and commitment is to provide our customers with the most transparent experience, while going above and beyond expectations to achieve 100% customer

"Easy to work with"

Bob F on October 2020


Integrated Lifestyle

115 Portland Ave
New on AngiNew on Angi
Approved Pro

Integrated Lifestyle

115 Portland Ave
New on AngiNew on Angi
Approved Pro
8 years of experience
Free onsite estimate

Integrated Lifestyle , 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.

Integrated Lifestyle , 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.

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FAQs for generator install projects in Stamford, CT

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.

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 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 Stamford, CT homeowners’ guide to generator installs
From average costs to expert advice, get all the answers you need to get your job done.
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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.
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Apr 1, 2025
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Before deciding between a gas generator and a natural gas generator, explore the differences. Compare gas vs. natural gas generator with our informative guide.
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Installing a portable generator can power key appliances during outages. Learn about the best backup generator questions to discuss with a pro.
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Is a whole-house generator worth it? Discover the key factors influencing ROI and whether it's the right choice for your home.
What do you need done? We’ll find top pros.
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