Top-rated heating and air conditioning pros.

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

There are 25 highly-rated local heating and air conditioning pros.

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  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon223
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Sayville

Abreu's A/C & Refrigeration

New on AngiNew on Angi
Approved Pro

Abreu's A/C & Refrigeration

New on AngiNew on Angi
Approved Pro
5 years of experience

Abreu's A/C & Heating Company 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.

Abreu's A/C & Heating Company 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.


Avatar for Energywise, Inc.

Energywise, Inc.

New on AngiNew on Angi
Approved Pro

Energywise, Inc.

New on AngiNew on Angi
Approved Pro
40 years of experience
Emergency services offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers 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 consumers 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 Mayjac Plumbing, Inc.

Mayjac Plumbing, Inc.

4.92(
13
)
Approved Pro

Mayjac Plumbing, Inc.

4.92(
13
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

At MayJac Plumbing Inc. we're dedicated to providing our clients with the very best service, installation, and repairs for all phases of their plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail we put into each of the projects we're involved with. Our goal at MayJac is to maintain a relationship with every customer for life. MayJac Plumbing Inc. is fully licensed and insured. We have over 18 years of experience. Call us today at (631) 909-1829 to discuss your all plumbing needs!

"Joe was great."

Nicholas U on June 2024

At MayJac Plumbing Inc. we're dedicated to providing our clients with the very best service, installation, and repairs for all phases of their plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail we put into each of the projects we're involved with. Our goal at MayJac is to maintain a relationship with every customer for life. MayJac Plumbing Inc. is fully licensed and insured. We have over 18 years of experience. Call us today at (631) 909-1829 to discuss your all plumbing needs!

"Joe was great."

Nicholas U on June 2024


Avatar for Just Chillin HVACR, LLC

Just Chillin HVACR, LLC

4.93(
15
)
Approved Pro

Just Chillin HVACR, LLC

4.93(
15
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
7 years of experience

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers' 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.

"Not only done right but done more expeditiously than expected"

William W on May 2024

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers' 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.

"Not only done right but done more expeditiously than expected"

William W on May 2024


THERMOSOURCE MECHANICAL LLC

4.70(
5
)
Approved Pro

THERMOSOURCE MECHANICAL LLC

4.70(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
8 years of experience

We're dedicated to providing our clients with the very best in installation, service, and repair for all of your Commercial HVAC needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"Great customer service. Friendly and knowledgeable staff."

Harish Y on January 2022

We're dedicated to providing our clients with the very best in installation, service, and repair for all of your Commercial HVAC needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"Great customer service. Friendly and knowledgeable staff."

Harish Y on January 2022


Avatar for RSL Heating & Cooling LLC

RSL Heating & Cooling LLC

5.00(
3
)
Approved Pro

RSL Heating & Cooling LLC

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

RSL Heating & Cooling 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 customers' interests, and make their concerns the basis of our business.

"Highly recommend RSL for any HVAC services, work was thorough and Rich is very knowledgeable. I look forward to his services in the near future!"

Joel M on October 2023

RSL Heating & Cooling 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 customers' interests, and make their concerns the basis of our business.

"Highly recommend RSL for any HVAC services, work was thorough and Rich is very knowledgeable. I look forward to his services in the near future!"

Joel M on October 2023


Avatar for 1-800-Plumber +Air of Central Long Island

1-800-Plumber +Air of Central Long Island

5.00(
8
)
Approved Pro

1-800-Plumber +Air of Central Long Island

5.00(
8
)
Approved Pro
Super Service Award
Customers say: Quick response
245 local quotes requested
1 years of experience

1-800-Plumber + Air of Central Long Island is focused on being the BEST! It's not about being better than everyone else, instead our focus is on providing you with the fast, dependable plumbing and emergency services when you need it most. Our goal is to give you the BEST experience you have ever received from a service based business.

"They cam to change the transformer, then they had much more work to do, and got the work done well!"

Kevin S on November 2025

1-800-Plumber + Air of Central Long Island is focused on being the BEST! It's not about being better than everyone else, instead our focus is on providing you with the fast, dependable plumbing and emergency services when you need it most. Our goal is to give you the BEST experience you have ever received from a service based business.

"They cam to change the transformer, then they had much more work to do, and got the work done well!"

Kevin S on November 2025


Avatar for Housitive Pbc

Housitive Pbc

5.00(
7
)
Approved Pro

Housitive Pbc

5.00(
7
)
Approved Pro
Customers say: Quick response
35 local quotes requested
2 years of experience

We are bringing our years of experience with mini-split heat pumps from Central New York to Long Island. Properly installed and maintained mini-splits are an efficient heating and cooling solution for most Long Island homes. At Housitive, we seek to serve our communities by providing the best mini-split installations and the best customer experience. We are committed to raising the bar for quality and efficiency and to creating a smooth, transparent process from first contact to completed project. We believe that mini-splits are a great choice for our homes, our communities, and our environment–and we want you to be as excited about them as we are, so we can together accelerate our transition away from fossil fuels!

"Communication and honestly was great from start to finish. They aligned to the vision we wanted with agreeable recommendations. They were clean and timely with the project and the final outcome was more than what was expected. I recommend them."

Christopher O on June 2025

We are bringing our years of experience with mini-split heat pumps from Central New York to Long Island. Properly installed and maintained mini-splits are an efficient heating and cooling solution for most Long Island homes. At Housitive, we seek to serve our communities by providing the best mini-split installations and the best customer experience. We are committed to raising the bar for quality and efficiency and to creating a smooth, transparent process from first contact to completed project. We believe that mini-splits are a great choice for our homes, our communities, and our environment–and we want you to be as excited about them as we are, so we can together accelerate our transition away from fossil fuels!

"Communication and honestly was great from start to finish. They aligned to the vision we wanted with agreeable recommendations. They were clean and timely with the project and the final outcome was more than what was expected. I recommend them."

Christopher O on June 2025


"They were on time, very efficient and did the work as expected "

Robert B on November 2025

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade, and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business.

"They were on time, very efficient and did the work as expected "

Robert B on November 2025


Avatar for Tedco Group, Inc.

Tedco Group, Inc.

4.54(
324
)
Approved Pro

Tedco Group, Inc.

4.54(
324
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
61 local quotes requested

We are dedicated to providing our clients with the very best in service, installation, and repair for your heating and cooling needs. We are a locally owned and operated company that values honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results and look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"Good service. Nice guys that got us back up and running. Communication could have been a little better but overall, it was a good experience. I will use them again for sure. "

Brian M on August 2025

We are dedicated to providing our clients with the very best in service, installation, and repair for your heating and cooling needs. We are a locally owned and operated company that values honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results and look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"Good service. Nice guys that got us back up and running. Communication could have been a little better but overall, it was a good experience. I will use them again for sure. "

Brian M on August 2025

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Heating and Air Conditioning questions, answered by experts

No, not all HVAC systems have a fresh air intake, but there are many advantages to having one. For example, a fresh air intake can boost the air quality inside your home and help your furnace run more effectively. Plus, it can make your house more energy efficient, possibly saving you money on your utility costs.

Many HVAC manufacturers provide warranties that encompass the cost of a new compressor, with durations ranging from 5 to 10 years, depending on the brand. These warranties cover critical components such as the compressor, condenser, connecting tubing, evaporator, and refrigerant charge. Moreover, they often include the necessary labor for replacement or repairs. Keep in mind that premium-brand compressors may offer lifetime warranty options. It's essential to note that these warranties rarely cover labor costs.

The size window AC you need depends on the BTU and the size of the room you’re cooling. For a room with 8-foot ceilings, look for about 20 BTU per square foot of the room. For example, a 12-by-12-foot room should have an air conditioner with 2,880 BTU. You can buy something slightly more powerful, but don’t overshoot the BTU for a small room, or you’ll waste energy and have higher bills.

While most air conditioners can last between 10 and 20 years, they will only last this long (or longer) if properly taken care of. Routine maintenance and inspections help keep your AC unit running in tip-top shape but understanding what factors will decrease its lifespan will also help keep your unit running cool.

Some things that shorten your AC’s lifespan include:

  • Extreme outdoor conditions, like high humidity or extensive salt spray 

  • Improper installation

  • Extended run times, either by the unit being too small or the thermostat setting too low

  • Not performing required maintenance

A new air conditioner capacitor will cost less than replacing the entire air conditioner system. While a capacitor itself will cost between $8 and $25, paying a professional to replace an AC capacitor will cost $180 on average. It’s not safe to replace an air conditioner capacitor on your own. 

The Sayville, 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.

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