Top-rated generator install pros.

Get matched with top generator install pros in Smithtown, NY

Enter your ZIP and get matched with up to 5 pros

TRUSTED BY SMITHTOWN, NY HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon29
    Verified generator installs reviews

Find Generator install pros in Smithtown

"Excellent work, friendly workers, kept the work area clean, & cleaned up after. I will hire them anytime I need electrical work!"

Thomas B on February 2020

Specializing in landscape lighting, generator hook ups, service upgrades, and recessed lighting. We pride ourselves on being clean, neat and professional. Call Mike at 631- 235-6125 for a free estimate.

"Excellent work, friendly workers, kept the work area clean, & cleaned up after. I will hire them anytime I need electrical work!"

Thomas B on February 2020


Avatar for Universe Home Services

Universe Home Services

4.74(
401
)
Approved Pro

Universe Home Services

4.74(
401
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
576 local quotes requested

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you’re dealing with an inefficient heating system, a noisy air conditioner, clogged toilet, broken dishwasher, or outdated electrical service panel, you can get the fast, affordable service you need with Universe Home Services.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!

"The plumber came out explained the whole process & provided me with a reasonable price that was in my budget & the next day they installed the new system. Mike was fantastic he walked me thru the whole process very neat & professional. The installation was fast & complete great job well worth the money"

Anthony G on November 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!

"The plumber came out explained the whole process & provided me with a reasonable price that was in my budget & the next day they installed the new system. Mike was fantastic he walked me thru the whole process very neat & professional. The installation was fast & complete great job well worth the money"

Anthony G on November 2025


Avatar for Master Cleaning Pros

Master Cleaning Pros

5.00(
6
)
Approved Pro

Master Cleaning Pros

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

We proudly serve our 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. Satisfaction Guaranteed! Give us a call today!

"Juan surveyed the driveway himself with the team on time. Provided a scope of work based on my request. We kept in contact with each other. His team arrived as scheduled. Completed the project in a timely fashion on budget. My wife and I were happy with the service provided by Juan and will reach out to him next time."

Charles H on October 2024

We proudly serve our 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. Satisfaction Guaranteed! Give us a call today!

"Juan surveyed the driveway himself with the team on time. Provided a scope of work based on my request. We kept in contact with each other. His team arrived as scheduled. Completed the project in a timely fashion on budget. My wife and I were happy with the service provided by Juan and will reach out to him next time."

Charles H on October 2024


J.A. WOOD ELECTRICAL CONTRACTORS INC.

New on AngiNew on Angi
Approved Pro

J.A. WOOD ELECTRICAL CONTRACTORS INC.

New on AngiNew on Angi
Approved Pro
5 years of experience

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

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


Avatar for Carlos Home Improvement

Carlos Home Improvement

New on AngiNew on Angi
Approved Pro

Carlos Home Improvement

New on AngiNew on Angi
Approved Pro
15 years of experience
Free onsite estimate

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

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



Avatar for A/C Performance Power, Inc.

A/C Performance Power, Inc.

5.00(
4
)
Approved Pro

A/C Performance Power, Inc.

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

A/C Performance Power, Inc., offers 20 years of experience in the generator industry. We specialize in residential, marine and commercial generator service and repair. We offer ,Sales service contracts and installations. We work on all makes ,models and sizes .We are Natural Gas and Diesel engine Specialists.We're committed to providing a personalized service for each individual project we take on & look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

"I just had my generator repaired by Jim Birch, owner of AC Performance Power. This is the company to use. He actually answers your texts, and He takes your call. He shows up when he tells you. Whether it's 6 am or 10 pm. He or one of his guys (blade the Man) will be there. Not only does he do the job, you know he does it right. It's the busiest season, so Jim and his team work long days to finish the job. I had a really difficult short in my generator, and in the end, Jim needed to field-fix my PC board. I am back up and running. 5 stars to Jim and his crew."

Robert C on July 2023

A/C Performance Power, Inc., offers 20 years of experience in the generator industry. We specialize in residential, marine and commercial generator service and repair. We offer ,Sales service contracts and installations. We work on all makes ,models and sizes .We are Natural Gas and Diesel engine Specialists.We're committed to providing a personalized service for each individual project we take on & look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

"I just had my generator repaired by Jim Birch, owner of AC Performance Power. This is the company to use. He actually answers your texts, and He takes your call. He shows up when he tells you. Whether it's 6 am or 10 pm. He or one of his guys (blade the Man) will be there. Not only does he do the job, you know he does it right. It's the busiest season, so Jim and his team work long days to finish the job. I had a really difficult short in my generator, and in the end, Jim needed to field-fix my PC board. I am back up and running. 5 stars to Jim and his crew."

Robert C on July 2023


Avatar for OptimizedVoIP

OptimizedVoIP

5.00(
13
)
Approved Pro

OptimizedVoIP

5.00(
13
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

Call 212-779-4188 & talk with an Engineer. We provide complete phone service (on-premise phone system, toll-free and local number, fax, phone line, data/voice wiring, etc...).Through our innovative communication solutions, you're able to stay connected anywhere, anytime. Designed specifically to meet your small business needs. We believe in upfront honesty and of course, our estimates are free of charge.

"I comparison shopped before hiring Manny and couldn't have been more satisfied with my choice.He is extremely knowledgeable, knows his business and very easy to work with. He was onsite after the installation and made whatever changes and adjustments needed without any difficulties. Great experience."

Dennis B on September 2017

Call 212-779-4188 & talk with an Engineer. We provide complete phone service (on-premise phone system, toll-free and local number, fax, phone line, data/voice wiring, etc...).Through our innovative communication solutions, you're able to stay connected anywhere, anytime. Designed specifically to meet your small business needs. We believe in upfront honesty and of course, our estimates are free of charge.

"I comparison shopped before hiring Manny and couldn't have been more satisfied with my choice.He is extremely knowledgeable, knows his business and very easy to work with. He was onsite after the installation and made whatever changes and adjustments needed without any difficulties. Great experience."

Dennis B on September 2017


Avatar for AvenueBits

AvenueBits

5.00(
3
)
Approved Pro

AvenueBits

5.00(
3
)
Approved Pro
Customers say: Quick response
10 years of experience
Free onsite estimate

AvenueBITS provides quality and professional Computer Networks and Telephone Systems services for Bohemia, NY, and surrounding areas. We can handle any project and look forward to working with you. Don't hesitate to give us a call, schedule an installation or service, and leave a review to let us know how we did.

"Gustavo was professional,knowledgeable and efficient. The work was done in a timely manner and he gave me some ideas on how to improve my business while saving money."

Geoff H on May 2020

AvenueBITS provides quality and professional Computer Networks and Telephone Systems services for Bohemia, NY, and surrounding areas. We can handle any project and look forward to working with you. Don't hesitate to give us a call, schedule an installation or service, and leave a review to let us know how we did.

"Gustavo was professional,knowledgeable and efficient. The work was done in a timely manner and he gave me some ideas on how to improve my business while saving money."

Geoff H on May 2020


"Frank did a great job. Highly recommended!!!"

PAUL N on June 2024

We are a full service electrical company. We are committed to serving our customers.There is no job that is too big or too small so please give us a call!

"Frank did a great job. Highly recommended!!!"

PAUL N on June 2024

...
Showing 1-10 of 178
Generator Install questions, answered by experts

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

If you’re wondering if you can use your electric vehicle as a backup battery, it depends on whether your EV is compatible with bidirectional charging. This technology allows energy to flow both ways, enabling vehicle-to-home (V2H) backup power, vehicle-to-load (V2L) for appliances and camping, and vehicle-to-grid (V2G) to support the power grid. Compatible EVs convert stored DC energy into usable AC power, helping reduce energy costs and enhance grid stability while providing emergency backup power.

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. 

The Smithtown, NY homeowners’ guide to generator installs

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

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"