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TRUSTED BY HOLTSVILLE, NY HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon889
    Verified nest installation services reviews

Find Nest installation pros in Holtsville

"I will recommend this company to my friends and family."

Sheena L on October 2025

We are an owner operated Heating & A/C company. We offer installation, repair, and maintenance of various HVAC Systems. The company is staffed by experienced and knowledgeable professionals who are certified and licensed to perform these jobs.

"I will recommend this company to my friends and family."

Sheena L on October 2025


Avatar for ADT

ADT

4.66(
686
)
Approved Pro

ADT

4.66(
686
)
Approved Pro
Super Service Award
Customers say: Terrific value
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
5007 local quotes requested

ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. We have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. All of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.

"My company has an offsite warehouse way out in the country about 15 miles from our main office. We wanted to add surveillance at the warehouse so we don’t have to go out there to check on things as often. We purchased an adt camera package and it has really helped cut down on our travel time. Simple but effective way to add surveillance to our storage warehouse."

Javier G on December 2025

ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. We have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. All of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.

"My company has an offsite warehouse way out in the country about 15 miles from our main office. We wanted to add surveillance at the warehouse so we don’t have to go out there to check on things as often. We purchased an adt camera package and it has really helped cut down on our travel time. Simple but effective way to add surveillance to our storage warehouse."

Javier G on December 2025


Avatar for Advanced Professional Management, LLC

Advanced Professional Management, LLC

4.20(
869
)
Approved Pro

Advanced Professional Management, LLC

4.20(
869
)
Approved Pro
Customers say: Quality work
303 local quotes requested
26 years of experience

Efficient and Honest, Advanced Professional’s has become a reputable and well-known service provider. We are fully licensed and insured so our team is up for every job, whether it is high-quality heating, plumbing, air conditioning, or managing general contractor projects (residential, commercial and industrial) we provide the skills and experience our clients have come to expect available 24/7. We want our customers to be satisfied with our work. When it comes to the job we don’t see our clients as just people we service, we treat them like family.

"Excellent job??????. Excellent customer service and very courteous. Left work area very clean and tidy."

Shirley D on December 2023

Efficient and Honest, Advanced Professional’s has become a reputable and well-known service provider. We are fully licensed and insured so our team is up for every job, whether it is high-quality heating, plumbing, air conditioning, or managing general contractor projects (residential, commercial and industrial) we provide the skills and experience our clients have come to expect available 24/7. We want our customers to be satisfied with our work. When it comes to the job we don’t see our clients as just people we service, we treat them like family.

"Excellent job??????. Excellent customer service and very courteous. Left work area very clean and tidy."

Shirley D on December 2023


"Great job done. Arrived on time, got the job done in a timely manner. Very professional and knowledgeable. Would definitely use again and highly recommend him. Thanks Anthony!"

Gean M on August 2025

With over 20 years of electrical experience, we are here to help you with all your electrical needs. Licensed and insured, we can tackle anything from smart home networking and landscape lighting to service upgrades and Generators

"Great job done. Arrived on time, got the job done in a timely manner. Very professional and knowledgeable. Would definitely use again and highly recommend him. Thanks Anthony!"

Gean M on August 2025


Avatar for Temperature Zone Corp

Temperature Zone Corp

4.86(
44
)
Approved Pro

Temperature Zone Corp

4.86(
44
)
Approved Pro
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
72 local quotes requested

Get the best, forget the rest! By treating clients like we would our family. We are more than just another Heating and Air Conditioning company. We are meticulous problem solvers who dedicate our time to ensure that we we deliver the best quality possible for the best price! As a Father and Son team that have over 30+ years in the business. If you are looking for more than a empty promise you can count on us to keep our word and deliver the quality job you deserve! We also offer financing options that will pre-qualify in 60 seconds with no affect to your credit score.

"Work was neat and quick, and now the house is warm."

Edmond B on October 2025

Get the best, forget the rest! By treating clients like we would our family. We are more than just another Heating and Air Conditioning company. We are meticulous problem solvers who dedicate our time to ensure that we we deliver the best quality possible for the best price! As a Father and Son team that have over 30+ years in the business. If you are looking for more than a empty promise you can count on us to keep our word and deliver the quality job you deserve! We also offer financing options that will pre-qualify in 60 seconds with no affect to your credit score.

"Work was neat and quick, and now the house is warm."

Edmond B on October 2025


Avatar for Universe Home Services

Universe Home Services

4.53(
444
)
Approved Pro

Universe Home Services

4.53(
444
)
Approved Pro
Customers say: Super punctual
571 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


Avatar for Ryder Electric

Ryder Electric

5.00(
3
)
Approved Pro

Ryder Electric

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
65 local quotes requested

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!

"Great;however I never received a receipt via e-mail for my payment"

Ralph C on September 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!

"Great;however I never received a receipt via e-mail for my payment"

Ralph C on September 2025


Avatar for GenReady, Inc.

GenReady, Inc.

4.75(
16
)
Approved Pro

GenReady, Inc.

4.75(
16
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
44 local quotes requested

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


Avatar for Ryan & Company

Ryan & Company

4.68(
60
)
Approved Pro

Ryan & Company

4.68(
60
)
Approved Pro
Customers say: Super punctual
105 local quotes requested
76 years of experience

We are a Family owned & operated business. Ryan & Co.,Inc. is a full service Plumbing, Heating and Cooling repair and installation company established in 1949 with a genuine commitment to professional, affordable & personalized service.

"Great job guys. Lovely working with them"

Robert H on July 2024

We are a Family owned & operated business. Ryan & Co.,Inc. is a full service Plumbing, Heating and Cooling repair and installation company established in 1949 with a genuine commitment to professional, affordable & personalized service.

"Great job guys. Lovely working with them"

Robert H on July 2024


Avatar for Matt Greco Electrical Inc.

Matt Greco Electrical Inc.

5.00(
22
)
Approved Pro

Matt Greco Electrical Inc.

5.00(
22
)
Approved Pro
Super Service Award
Customers say: Quick response
89 local quotes requested
2 years of experience

Matt Greco Electrical Inc. offers top quality electrical work at competitive prices. Close to 20 years of residential and commercial electrical experience. Knowledge and constant use of the National Electrical Code. Safe, Clean, trustworthy, and reliable electrical contractor.

"Very neat work, fair price, came on time and left my house cleaner than they found it."

David F on December 2025

Matt Greco Electrical Inc. offers top quality electrical work at competitive prices. Close to 20 years of residential and commercial electrical experience. Knowledge and constant use of the National Electrical Code. Safe, Clean, trustworthy, and reliable electrical contractor.

"Very neat work, fair price, came on time and left my house cleaner than they found it."

David F on December 2025

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Nest Installation questions, answered by experts

The best time to hire a childproofing professional is at least three months before your due date. Although it might seem early, proper childproofing takes time, especially if you need extensive services like a pool fence. Getting your house ready now before your child is on the go only helps to protect them at all stages of life.

In many cases, you can DIY home childproofing with success. You can purchase childproofing tools like cabinet locks, outlet covers, and table-edge guards and install them easily. 

However, it's best to have a professional childproofing service work on larger projects like pool safety or furniture anchoring. These safety measures can take a lot of time and effort to DIY, plus, you want to ensure the tasks are done correctly to keep your child safe.

While tamper-resistant outlets are effective at protecting children from the dangerous electrical outlets, few things can be truly childproof. Children may still try to imitate their parents and adults by inserting a plug into the tamper-resistant outlet. Hiding outlets behind childproofing covers is not an effective solution to this, as those covers can be removed or even swallowed. Tamper-resistant outlets are the safest option to keep children safe in your home, but be sure to always keep a close eye on young children around any outlets or electrical devices.

Many parents, especially first-time parents, agree that professional childproofing is worth it. These professional childproofing services are trained to recognize dangerous home situations that many people would overlook until it's too late. Furthermore, professional childproofing experts have access to top-of-the-line equipment you can't purchase at most stores, providing longevity and peace of mind.

A professional childproofer will first survey your home to identify potentially dangerous locations, including stairs, cabinets, and pools. Once approved, your professional will order and install the safety equipment for you. 

Some ways a childproofing professional will make your home safe include:

  • Anchoring large furniture 

  • Installing safety gates

  • Installing safety latches on cabinets and drawers 

  • Covering railings that could trap a child

  • Covering electrical outlets 

  • Installing a swimming pool fence

  • Removing or covering electrical cords where possible

The Holtsville, NY homeowners’ guide to nest installation services

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.
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