Get matched with top generator installers in Hempstead, NY
There are 9 highly-rated local generator installers.
TRUSTED BY HEMPSTEAD, NY HOMEOWNERS
4.5 
13 Verified Reviews for Generator Installation pros in Hempstead, NY
*The Angi rating for Generator Installation companies in Hempstead, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Installation needs.
*The HomeAdvisor rating for Generator Installation companies in Hempstead, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Installation needs.
Last update on June 20, 2025
Generator installers in Hempstead
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
Crossland Management & Electric, Inc. is your go-to electrical contractor for your home renovations or home remodeling. Our teams are trained and skilled for all your electrical and low-voltage needs. Don't hesitate to ask us a question or inquire as to why a certain process has to take place. Everyone on staff is friendly and knowledgeable because we know what it's like to be in your shoes. We want you to know just how special you and your project are to us, so we do our very best to ensure that you and your needs always come first. We even have a complimentary estimate where we'll come out to you!
"Initially, he responded within the hour when I posted my request then he came to the house. From there on, in terms of your appointments, there was a back and forth. I was very determined to encourage him. But he had me waited for an hour and it was disrespectful for me. I thanked him when the appointment is kept being cancelled to contact the electric company. He wanted me to do it, he finally did it and then they rescheduled. But now, from this point on where is additional work, that their company wishes the company is requiring. I cannot get the information, the specific information as to what is needed.. And this is now going on over two weeks, everything is a standstill. He is not responding and writing in a text. My interest is just to get the job completed."
Debbie D on September 2023
Crossland Management & Electric, Inc. is your go-to electrical contractor for your home renovations or home remodeling. Our teams are trained and skilled for all your electrical and low-voltage needs. Don't hesitate to ask us a question or inquire as to why a certain process has to take place. Everyone on staff is friendly and knowledgeable because we know what it's like to be in your shoes. We want you to know just how special you and your project are to us, so we do our very best to ensure that you and your needs always come first. We even have a complimentary estimate where we'll come out to you!
"Initially, he responded within the hour when I posted my request then he came to the house. From there on, in terms of your appointments, there was a back and forth. I was very determined to encourage him. But he had me waited for an hour and it was disrespectful for me. I thanked him when the appointment is kept being cancelled to contact the electric company. He wanted me to do it, he finally did it and then they rescheduled. But now, from this point on where is additional work, that their company wishes the company is requiring. I cannot get the information, the specific information as to what is needed.. And this is now going on over two weeks, everything is a standstill. He is not responding and writing in a text. My interest is just to get the job completed."
Debbie D on September 2023
With over 25 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 thousands 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 satisfaction. We are proud to serve Fairfield and Westchester County and beyond, and we look forward to serving you in the near future.
"P&S Electrical did a great job with a few projects at my home and office. They also answered all of my questions both before and after they completed the work. Very professional all around. I definitely recommend them for any electrical work you may need!"
Silvia P on April 2025
With over 25 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 thousands 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 satisfaction. We are proud to serve Fairfield and Westchester County and beyond, and we look forward to serving you in the near future.
"P&S Electrical did a great job with a few projects at my home and office. They also answered all of my questions both before and after they completed the work. Very professional all around. I definitely recommend them for any electrical work you may need!"
Silvia P on April 2025
Our team of Electricians is skilled, professional, and conscientious with years of experience dealing with the unforeseeable circumstances the commercial and residential Industries present. In addition, we partner with teams of architects, engineers, contractors, manufacturers and suppliers to further, strengthen our foundation in the industry. Each new customer that we work with is welcomed with a lifelong commitment to brighten their lives along the way. We care about what we do and it shows!
"It went very well. Derick was prompted, knowledgeable, and friendly."
Felix V on August 2024
Our team of Electricians is skilled, professional, and conscientious with years of experience dealing with the unforeseeable circumstances the commercial and residential Industries present. In addition, we partner with teams of architects, engineers, contractors, manufacturers and suppliers to further, strengthen our foundation in the industry. Each new customer that we work with is welcomed with a lifelong commitment to brighten their lives along the way. We care about what we do and it shows!
"It went very well. Derick was prompted, knowledgeable, and friendly."
Felix V on August 2024
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
Gen Ready, Inc., was established in 1979 to service the surrounding area and provide residents with all their standby electric power solutions. Our staff of knowledgeable and dedicated professionals take pride in providing outstanding, personalized service to our customers and our community. All of our techs are factory trained and certified for warranty repair and maintenance. Call us today and become one of our many satisfied customers. You can visit us online at www.getgenready.com
"After getting several quotes, last year we hired GenReady to install a house generator. Ed, the owner of the company impressed us from the start. He was knowledgeable and patiently explained the process as well as answering our questions. We knew right away that GenReady was the company for us. Lindsay kept us up to date as we moved along in the process. Our generator was installed last July. Andrew and his team installed the generator with expertise and efficiency. They took care to leave our house and yard spotless. Lindsay and Andrew were always happy to answer my questions and address me concerns. We’ve needed the generator only once (thank goodness) when our power went out due to a necessary power line repair after a car crashed into a utility pole on our street. When the power went out, our generator turned on within seconds. Our house was up and running for the four hours the line repair took, and if it weren’t for the blink of lights, we never would have known our generator was running. Every other week, our generator self tests for a few minutes giving us peace mind that it will be here for us if and when we need it. Just like the generator, GenReady is a company that runs efficiently and seamlessly. Just today, Lindsay called to tell me someone would be coming tomorrow to change the oil which reminded me that I am long overdue in submitting this well deserved rave review. Thank you to the entire GenReady team (and to Great White Propane) for all you’ve done to help us know we can weather any power outage."
nancy a on July 2020
Gen Ready, Inc., was established in 1979 to service the surrounding area and provide residents with all their standby electric power solutions. Our staff of knowledgeable and dedicated professionals take pride in providing outstanding, personalized service to our customers and our community. All of our techs are factory trained and certified for warranty repair and maintenance. Call us today and become one of our many satisfied customers. You can visit us online at www.getgenready.com
"After getting several quotes, last year we hired GenReady to install a house generator. Ed, the owner of the company impressed us from the start. He was knowledgeable and patiently explained the process as well as answering our questions. We knew right away that GenReady was the company for us. Lindsay kept us up to date as we moved along in the process. Our generator was installed last July. Andrew and his team installed the generator with expertise and efficiency. They took care to leave our house and yard spotless. Lindsay and Andrew were always happy to answer my questions and address me concerns. We’ve needed the generator only once (thank goodness) when our power went out due to a necessary power line repair after a car crashed into a utility pole on our street. When the power went out, our generator turned on within seconds. Our house was up and running for the four hours the line repair took, and if it weren’t for the blink of lights, we never would have known our generator was running. Every other week, our generator self tests for a few minutes giving us peace mind that it will be here for us if and when we need it. Just like the generator, GenReady is a company that runs efficiently and seamlessly. Just today, Lindsay called to tell me someone would be coming tomorrow to change the oil which reminded me that I am long overdue in submitting this well deserved rave review. Thank you to the entire GenReady team (and to Great White Propane) for all you’ve done to help us know we can weather any power outage."
nancy a on July 2020
HF Home Improvement 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.
"They responded right away. We needed more communication on the details of the work. Language barrier cause some issues, I don't speak Spanish. They were polite and professional. I would recommend them to others."
Gwen B on November 2024
HF Home Improvement 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.
"They responded right away. We needed more communication on the details of the work. Language barrier cause some issues, I don't speak Spanish. They were polite and professional. I would recommend them to others."
Gwen B on November 2024
We specialize in appliance repair for a variety of major brand appliances including, but not limited to, LG, Samsung, Maytag, Whirlpool, Viking, and Subzero. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We look forward to building long-term relationships with our clients and guarantee your satisfaction! We offer a 24 HOUR EMERGENCY SERVICE as well as a ONE YEAR WARRANTY on our appliance repair services.
"Professional, knowledgeable and competent"
Christian B on September 2022
We specialize in appliance repair for a variety of major brand appliances including, but not limited to, LG, Samsung, Maytag, Whirlpool, Viking, and Subzero. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We look forward to building long-term relationships with our clients and guarantee your satisfaction! We offer a 24 HOUR EMERGENCY SERVICE as well as a ONE YEAR WARRANTY on our appliance repair services.
"Professional, knowledgeable and competent"
Christian B on September 2022
KM Communications is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations.
"Kevin was a prompt communicator, the quality of his work was excellent and his fees were very reasonable."
Joe M on October 2022
KM Communications is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations.
"Kevin was a prompt communicator, the quality of his work was excellent and his fees were very reasonable."
Joe M on October 2022
Hephaestus is your go-to service professionals for all residential and commercial areas. We provide services like Interior Painting, Cabinet Installation. Flooring Installation, Custom Closet Organization, and TV wall mount. We do it all and more! We have professional technicians that specialize in their fields so they can deliver the best craftsmanship and customer service to our clients! Contact us at [email protected] or call us! Visit our site for more info.
"Carlos was extremely attentive to what I needed for my closets and provided great recommendations as we were brainstorming different solutions for how to customize for my new condo. He was prompt in all of our correspondences and transparent about the entire process. I have a couple of oddly designed closet doors that we had to work around; but when the drawers I was hoping for weren't available, Carlos said that he would custom build to what I wanted! We hit a speedbump with me catching covid, but Carlos was very supportive and still came through to complete 2 out of the 3 closets I contracted him for while I stayed at the far opposite end of the condo. I was so grateful for the enthusiasm, professionalism, and straight up care Carlos and his partner put into this project. And I am LOVING the work that's been done so far! Can't wait to get better so that we could start back up on the master bedroom closet!"
Kissa F on January 2021
Hephaestus is your go-to service professionals for all residential and commercial areas. We provide services like Interior Painting, Cabinet Installation. Flooring Installation, Custom Closet Organization, and TV wall mount. We do it all and more! We have professional technicians that specialize in their fields so they can deliver the best craftsmanship and customer service to our clients! Contact us at [email protected] or call us! Visit our site for more info.
"Carlos was extremely attentive to what I needed for my closets and provided great recommendations as we were brainstorming different solutions for how to customize for my new condo. He was prompt in all of our correspondences and transparent about the entire process. I have a couple of oddly designed closet doors that we had to work around; but when the drawers I was hoping for weren't available, Carlos said that he would custom build to what I wanted! We hit a speedbump with me catching covid, but Carlos was very supportive and still came through to complete 2 out of the 3 closets I contracted him for while I stayed at the far opposite end of the condo. I was so grateful for the enthusiasm, professionalism, and straight up care Carlos and his partner put into this project. And I am LOVING the work that's been done so far! Can't wait to get better so that we could start back up on the master bedroom closet!"
Kissa F on January 2021
FAQs for generator installation projects in Hempstead, NY
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
- Uniondale
- West Hempstead
- Garden City
- Roosevelt
- Franklin Square
- Mineola
- Malverne
- Carle Place
- Rockville Centre
- Oceanside
- Stewart Manor
- East Meadow
- Merrick
- North Baldwin
- Baldwin
- Garden City Park
- North Hills
- East Williston
- Williston Park
- Freeport
- Lynbrook
- Elmont
- South Floral Park
- New Hyde Park
- Floral Park
- Albertson
- Westbury
- East Rockaway
- North Bellmore
- Bellmore
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