Get matched with top generator install pros in Old Greenwich, CT
There are 5 highly-rated local generator install pros.
TRUSTED BY OLD GREENWICH, CT HOMEOWNERS
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25 Verified Reviews for Generator Install pros in Old Greenwich, CT
*The Angi rating for Generator Install companies in Old Greenwich, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.
*The HomeAdvisor rating for Generator Install companies in Old Greenwich, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.
Last update on August 06, 2025
Generator install pros in Old Greenwich
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.
"10 yr old Generac GP6500E wouldn’t start. Called around and many want to upsell to permanent. Found Franks and what a delight. Honest, down to earth, affordable for senior. Showed up on time. Changed oil, spark plug. Pulled carburetor and found it dirty and fouled. Got used one from his shop(same day) and installed. Gen started right up on one or two pulls. Battery was dead but showed us how to replace. Highly recommend Frank’s Generator."
Dennis H on October 2024
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.
"10 yr old Generac GP6500E wouldn’t start. Called around and many want to upsell to permanent. Found Franks and what a delight. Honest, down to earth, affordable for senior. Showed up on time. Changed oil, spark plug. Pulled carburetor and found it dirty and fouled. Got used one from his shop(same day) and installed. Gen started right up on one or two pulls. Battery was dead but showed us how to replace. Highly recommend Frank’s Generator."
Dennis H on October 2024
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
Smart Electrical Solutions, 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 customer's interests and make their concerns the basis of our business. Please give us a call today!
"Very professional and friendly. Very member of the team was flexible and efficient. I will be using them again."
Aaron B on August 2022
Smart Electrical Solutions, 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 customer's interests and make their concerns the basis of our business. Please give us a call today!
"Very professional and friendly. Very member of the team was flexible and efficient. I will be using them again."
Aaron B on August 2022
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
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our absolute best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
"The Steadfast Electrical team is very professional and easy to work with. There are a number of electricals projects they are working on for me and I will continue to use Steadfast for all of my electrical projects. "
DOREEN A on June 2025
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our absolute best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
"The Steadfast Electrical team is very professional and easy to work with. There are a number of electricals projects they are working on for me and I will continue to use Steadfast for all of my electrical projects. "
DOREEN A on June 2025
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
St. Lawrence Electric is dedicated to providing its customers the highest quality electrical work paired with exceptional customer service and great attention to detail.
"Kevin was great. I called him with a few questions about the process and he was able to answer them quickly and accurately. He was also able to schedule me and get the job done quickly. I would highly recommend St. Lawrence Electric. "
Alex C on May 2025
St. Lawrence Electric is dedicated to providing its customers the highest quality electrical work paired with exceptional customer service and great attention to detail.
"Kevin was great. I called him with a few questions about the process and he was able to answer them quickly and accurately. He was also able to schedule me and get the job done quickly. I would highly recommend St. Lawrence Electric. "
Alex C on May 2025
With 40 plus years of experience at West Electric, LLC, our work and customer service far exceeds our competition. We make sure that any concerns that the customer has are addressed quickly and correctly. We treat them the way we would expect to be treated as well. Your Home Electrictrification Specialists, providing you with commetive pricing for your EV, SOLAR, AND BATTERY STORAGE needs.
"West Electric did very good work. They were able to get the job done quick and efficient. They were responsive when I had questions. They were very reasonable priced. Would definitely hire again in the future "
Skott W on June 2025
With 40 plus years of experience at West Electric, LLC, our work and customer service far exceeds our competition. We make sure that any concerns that the customer has are addressed quickly and correctly. We treat them the way we would expect to be treated as well. Your Home Electrictrification Specialists, providing you with commetive pricing for your EV, SOLAR, AND BATTERY STORAGE needs.
"West Electric did very good work. They were able to get the job done quick and efficient. They were responsive when I had questions. They were very reasonable priced. Would definitely hire again in the future "
Skott W on June 2025
Corporate Electric SRBA, LLC proudly serves its customers with pride, integrity, and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!
Corporate Electric SRBA, LLC proudly serves its customers with pride, integrity, and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!
Founded in 2007, Wa/ve Sound and Security, LLC has evolved as an industry leader in providing innovative solutions for the security, entertainment, and productivity of our customers. Our focus is to educate the customer so they can make the most informed decision on the products they are looking to purchase. We maintain a clean work environment, cleanup is important to us - we strive to leave the work site better than how we found it!
"Wes did an amazing job getting our dental practice music back up and running after a power surge took it out. His prompt attention brought the morality back up in the office while treating the patients. He was extremely communicative throughout the whole process. Thank you Wes!"
Samantha V on March 2025
Founded in 2007, Wa/ve Sound and Security, LLC has evolved as an industry leader in providing innovative solutions for the security, entertainment, and productivity of our customers. Our focus is to educate the customer so they can make the most informed decision on the products they are looking to purchase. We maintain a clean work environment, cleanup is important to us - we strive to leave the work site better than how we found it!
"Wes did an amazing job getting our dental practice music back up and running after a power surge took it out. His prompt attention brought the morality back up in the office while treating the patients. He was extremely communicative throughout the whole process. Thank you Wes!"
Samantha V on March 2025
FAQs for generator install projects in Old Greenwich, 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
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