Top-rated heating and air conditioning pros.

Get matched with top heating and air conditioning pros in Holtsville, NY

There are 31 highly-rated local heating and air conditioning pros.

TRUSTED BY HOLTSVILLE, NY HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon208
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Holtsville

Avatar for 212 HVAC

212 HVAC

4.59(
80
)
Approved Pro

212 HVAC

4.59(
80
)
Approved Pro
Super Service Award
Customers say: True professional
164 local quotes requested
12 years of experience

212 HVAC is the preferred service provider for both commercial and residential services. If you need to make sure that your heating and air conditioning is always operating at optimum capacity, give the reliable and reputable services of 212 HVAC a call. In NYC, air conditioning maintenance is also performed by the talented team of service technicians at 212 HVAC. Keeping your furnace in good condition is important to its functionality. If you need any type of heating repair and installation, Manhattan residents will tell you that the best service provider for the job is 212 HVAC. This is because we take our time to get the job done right on our initial visit. Your furnace needs can be taken care of at 212 HVAC at a rate you can afford. If you are actively seeking the services of someone to handle your HVAC repair and installation, New York City businesses and homeowners depend on the services of 212 HVAC. 212 HVAC offers heating and air conditioning services at affordable prices. We can work just about any budget type to provide you with the services that you need at 212 HVAC. Although there are plenty of Manhattan HVAC repair and installation services, the one preferred over the others is 212 HVAC. Find out why we are the preferred service in nyc by calling on us for all of your many HVAC service needs. Allergies are no fun and they can be a lot worse when you have a dirty air duct. When you need air duct cleaning, Manhattan homeowners will often recommend the services of the top rated HVAC service in NYC, 212 HVAC. We inspect your system to make sure we clean everything from the drip pan to the coils. You'll be breathing fresh air again before you know it.

"I've been using 212 HVAC now for a good 4 years. I've always been happy with their services. I find them lovely to deal with. They do our regular cleanings and have replaced a faulty filter for me. I trust them with my building."

Brian C on September 2025

212 HVAC is the preferred service provider for both commercial and residential services. If you need to make sure that your heating and air conditioning is always operating at optimum capacity, give the reliable and reputable services of 212 HVAC a call. In NYC, air conditioning maintenance is also performed by the talented team of service technicians at 212 HVAC. Keeping your furnace in good condition is important to its functionality. If you need any type of heating repair and installation, Manhattan residents will tell you that the best service provider for the job is 212 HVAC. This is because we take our time to get the job done right on our initial visit. Your furnace needs can be taken care of at 212 HVAC at a rate you can afford. If you are actively seeking the services of someone to handle your HVAC repair and installation, New York City businesses and homeowners depend on the services of 212 HVAC. 212 HVAC offers heating and air conditioning services at affordable prices. We can work just about any budget type to provide you with the services that you need at 212 HVAC. Although there are plenty of Manhattan HVAC repair and installation services, the one preferred over the others is 212 HVAC. Find out why we are the preferred service in nyc by calling on us for all of your many HVAC service needs. Allergies are no fun and they can be a lot worse when you have a dirty air duct. When you need air duct cleaning, Manhattan homeowners will often recommend the services of the top rated HVAC service in NYC, 212 HVAC. We inspect your system to make sure we clean everything from the drip pan to the coils. You'll be breathing fresh air again before you know it.

"I've been using 212 HVAC now for a good 4 years. I've always been happy with their services. I find them lovely to deal with. They do our regular cleanings and have replaced a faulty filter for me. I trust them with my building."

Brian C on September 2025


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
585 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 Varsity Home Service

Varsity Home Service

4.30(
83
)
Approved Pro

Varsity Home Service

4.30(
83
)
Approved Pro
Customers say: Super punctual
171 local quotes requested
63 years of experience

Practice makes perfect, and Varsity has been at it for over half a century! What began with a Navy veteran’s simple dream — to teach the value of honest, hands-on work to his children — has grown into one of Long Island’s most trusted resource for plumbing, heating and air conditioning services. Varsity’s mission has always been clear: to serve our neighbors with integrity, solve home service challenges with innovative solutions, and provide lasting results. Our dedicated crew is background-checked, rigorously trained in the latest technology, and excited to exceed your expectations. Above all Varsity is here to EARN your trust—not just for today, but for years to come. Let’s tackle your home service needs with the quality and care you deserve!

"Efficient and clear process, nice crew, quick and clean execution. It would score 4.5 as there were a couple of opportunities for improvement identified (including surprising problems with running a communication cable, and a trivial unnoticed misconnection sorted out the next day by a dedicated technical help call), but overall an outstanding service."

Claudio M on September 2025

Practice makes perfect, and Varsity has been at it for over half a century! What began with a Navy veteran’s simple dream — to teach the value of honest, hands-on work to his children — has grown into one of Long Island’s most trusted resource for plumbing, heating and air conditioning services. Varsity’s mission has always been clear: to serve our neighbors with integrity, solve home service challenges with innovative solutions, and provide lasting results. Our dedicated crew is background-checked, rigorously trained in the latest technology, and excited to exceed your expectations. Above all Varsity is here to EARN your trust—not just for today, but for years to come. Let’s tackle your home service needs with the quality and care you deserve!

"Efficient and clear process, nice crew, quick and clean execution. It would score 4.5 as there were a couple of opportunities for improvement identified (including surprising problems with running a communication cable, and a trivial unnoticed misconnection sorted out the next day by a dedicated technical help call), but overall an outstanding service."

Claudio M on September 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
68 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 Ryan & Company

Ryan & Company

4.68(
60
)
Approved Pro

Ryan & Company

4.68(
60
)
Approved Pro
Customers say: Super punctual
116 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


"I will give Luis a 10 stars! Very knowledgeable and know what he is doing."

Frank L on November 2025

Heating and A/C business is locally owned and operated. We feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today! 631-652-8910

"I will give Luis a 10 stars! Very knowledgeable and know what he is doing."

Frank L on November 2025


Avatar for KS Mechanical Services

KS Mechanical Services

5.00(
11
)
Approved Pro

KS Mechanical Services

5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
154 local quotes requested

At KS Mechanical Services we take great pride in our experience, expertise, quality and customer service 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. KS Mechanical's expertly trained staff will work with you to design new systems for your home or office to keep within your budget. Our reputation is based on service, safety and quality, regardless of how large or small the job. **10% SENIOR CITIZEN DISCOUNT **FREE ESTIMATES FOR NEW INSTALLATIONS AND REPLACEMENTS **FINANCING AVAILABLE

"Excellent! Exuded confidence a dedication.Lance did a great job. Very kind as well."

Sarah P on May 2025

At KS Mechanical Services we take great pride in our experience, expertise, quality and customer service 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. KS Mechanical's expertly trained staff will work with you to design new systems for your home or office to keep within your budget. Our reputation is based on service, safety and quality, regardless of how large or small the job. **10% SENIOR CITIZEN DISCOUNT **FREE ESTIMATES FOR NEW INSTALLATIONS AND REPLACEMENTS **FINANCING AVAILABLE

"Excellent! Exuded confidence a dedication.Lance did a great job. Very kind as well."

Sarah P on May 2025


Avatar for JB Comfort Heat and Air Conditions

JB Comfort Heat and Air Conditions

4.72(
43
)
Approved Pro

JB Comfort Heat and Air Conditions

4.72(
43
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
46 local quotes requested

I’m a US veteran that continue serving to the community by providing the best service in home repairs. I’m honest man if I can’t do, it I will tell you on the spot. I can fix many things; plumbing, Electrical issues, Decks, heating and Air conditioner, Power washing, Roof patching., Fences repair and install. Text me for free estimates!!

"I hired a pro to fix my heating issue and the tech came 2 days and couldn't resolve the issue . Charged me $100 day one for the visit and charged me $165 day two for a part that was replaced which was working fine. The issue was not with that part and pro replaced it with no reason. Spend couple of hours day two without any resolution . Today I hired a licensed installed and he came and fix the problem within 3 hrs . I wasted 2 half day of my time and also $365"

Tito P on December 2025

I’m a US veteran that continue serving to the community by providing the best service in home repairs. I’m honest man if I can’t do, it I will tell you on the spot. I can fix many things; plumbing, Electrical issues, Decks, heating and Air conditioner, Power washing, Roof patching., Fences repair and install. Text me for free estimates!!

"I hired a pro to fix my heating issue and the tech came 2 days and couldn't resolve the issue . Charged me $100 day one for the visit and charged me $165 day two for a part that was replaced which was working fine. The issue was not with that part and pro replaced it with no reason. Spend couple of hours day two without any resolution . Today I hired a licensed installed and he came and fix the problem within 3 hrs . I wasted 2 half day of my time and also $365"

Tito P on December 2025


Avatar for Advanced Professional Management, LLC

Advanced Professional Management, LLC

4.61(
726
)
Approved Pro

Advanced Professional Management, LLC

4.61(
726
)
Approved Pro
Customers say: Quick response
271 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


"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

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Showing 1-10 of 210
Heating and Air Conditioning questions, answered by experts

The average life span of an HVAC system is 15 to 20 years. Even if your old air conditioner is still functional, it isn't as energy-efficient as a newer system (especially one with an Energy Star designation). Older HVAC systems aren't as efficient, and the 10-year mark is when you should start making full system replacement plans. Twenty years in, that plan should be well underway rather than waiting for the unit to die.

To extend your HVAC system’s lifespan, it’s crucial to keep up with maintenance. This includes changing filters and thermostat batteries, keeping the outside unit clean and clear of clutter, and lubricating moving parts. Watch out for leaks, mold buildup, and blockages to ensure your unit stays in good working order. Spotting these issues early can be the difference between a simple, wallet-friendly repair and an expensive replacement.

HVAC replacement doesn't always include ductwork replacement. It depends on the condition of the existing ductwork. You can reuse your ducts if they are in good shape, adequately sized, and meet current standards. However, if the ducts are damaged, poorly designed, or not appropriately sized for the new system, they may need to be replaced or upgraded. HVAC contractors will assess the condition of the ductwork during the replacement process and recommend any necessary modifications or replacements to ensure the new HVAC system operates efficiently and distributes air effectively throughout your home.

Whether an HVAC damper should be open or closed depends on the season, the zone it controls, and the temperature in that zone. In the summer, open upstairs dampers and close lower-level dampers to get the most efficient cooling possible. In the winter, do the opposite. Cool air will naturally flow down to lower levels, while warm air will rise. This keeps your system from working harder and helps prevent common AC problems.

While all portable AC units will collect moisture as part of their cooling and dehumidifying process, whether and how often you need to drain them depends on what kind of unit you have and the natural humidity levels where you live. For example, if you live in a very dry area and have a self-evaporating unit, you may not need to drain your portable AC very often at all. Some units may automatically drain collected moisture out the window through their exhaust vent.

The Holtsville, NY homeowners’ guide to heating and air conditioning 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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