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

There are 60 highly-rated local heating and air conditioning pros.

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Average homeowner rating star icon4.4
Average homeowner rating
Verified reviews icon177
Verified heating and air conditioning services reviews

Heating and air conditioning pros in Stony Brook

Avatar for Triple H Insulation
Triple H Insulation
90 Arlington Ave.
4.55(
20
)
Approved Pro
Triple H Insulation
90 Arlington Ave.
4.55(
20
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
106 local quotes requested

Since 1999, woman-owned and operated Triple H Insulation has been providing Long Island customers with the most comprehensive home evaluation services with the utmost integrity and professionalism. We specialize in all aspects of Insulation and Air Sealing, including open and closed-cell Spray Foam, blown in and dense-packed cellulose, crawl space encapsulation and dehumidification. We can perform a free evaluation of your home from your basement or crawlspace to your attic. As a woman-owned company, we are committed to treating everyone with equal respect and focus on direct communication with all the household decision makers so each person is engaged in the process. Our skilled comfort consultants use building science principles to help our clients reduce energy costs and improve their homes' comfort. We hold a Gold Star designation from the Building Performance Institute (BPI.org) and our staff is Gold Star BPI certified. Triple H has Home Improvement Licenses in Suffolk, Nassau and NYC. See our great before and after photos on triplehcontracting.com.

"They are supposed to come tomorrow, they agreed on that. They called and told me that the job is too small and they refused to do the job. Meanwhile I described the job to the woman, the dimensions and the specifics and she agreed but still cancelled it."

Benny C on December 2021

Since 1999, woman-owned and operated Triple H Insulation has been providing Long Island customers with the most comprehensive home evaluation services with the utmost integrity and professionalism. We specialize in all aspects of Insulation and Air Sealing, including open and closed-cell Spray Foam, blown in and dense-packed cellulose, crawl space encapsulation and dehumidification. We can perform a free evaluation of your home from your basement or crawlspace to your attic. As a woman-owned company, we are committed to treating everyone with equal respect and focus on direct communication with all the household decision makers so each person is engaged in the process. Our skilled comfort consultants use building science principles to help our clients reduce energy costs and improve their homes' comfort. We hold a Gold Star designation from the Building Performance Institute (BPI.org) and our staff is Gold Star BPI certified. Triple H has Home Improvement Licenses in Suffolk, Nassau and NYC. See our great before and after photos on triplehcontracting.com.

"They are supposed to come tomorrow, they agreed on that. They called and told me that the job is too small and they refused to do the job. Meanwhile I described the job to the woman, the dimensions and the specifics and she agreed but still cancelled it."

Benny C on December 2021


Avatar for AR AIR CORP
AR AIR CORP
AR AIR CORP
4.92(
50
)
Approved Pro
AR AIR CORP
AR AIR CORP
4.92(
50
)
Approved Pro
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
29 local quotes requested

AR Air has been proudly serving our community since 1999, providing top-quality heating, cooling, and appliance services. We specialize in AC, heating, and water heater solutions, and we’re a Fujitsu Elite contractor for ductless systems. Our expertise also includes rooftop package units, PTAC units, humidifiers, and WiFi thermostats, along with repairs and maintenance on all refrigeration systems.

"Ralphie of AR AIR Corp is the best HVAC technician we've ever had since owning heat pumps for over 3 decades, we're so pleased to have a service contract with AR AIR CORP so we will never have deal with a unskilled technician like last week when the Condenser stopped working in the heat wave with 95 temps I'm my house . The former technician who couldn't find the control board part that I easily found online and missed all other problems in the unit leaving a mess of wires . It took 3 hours in the hot sun Ralphie figured all the problems out in the Condenser and got it working again. Ralphie went out his way to help us because my husband has Parkinson's and he felt for us in his condition and that he is kind person who cares ! Ralphie explains everything in detail and has shown us as the owner of AR AIR CORP IS HE HONEST AND RELIABLE , I will highly recommend AR AIR CORP to my neighbors and friends and put their Business card in HOA CLUBHOUSE . Ralphie being on ANGI'S helped us to find such a skilled kind PROFESSIONAL HVAC TECHNICIAN , THANK YOU ANGI'S .Ralphie texted me immediately this past Saturday even out of town, such great service ABOVE AND BEYOND also love the texting of confirming appointment and on the way texts , thank you Ralphie"

gerr s on July 2025

AR Air has been proudly serving our community since 1999, providing top-quality heating, cooling, and appliance services. We specialize in AC, heating, and water heater solutions, and we’re a Fujitsu Elite contractor for ductless systems. Our expertise also includes rooftop package units, PTAC units, humidifiers, and WiFi thermostats, along with repairs and maintenance on all refrigeration systems.

"Ralphie of AR AIR Corp is the best HVAC technician we've ever had since owning heat pumps for over 3 decades, we're so pleased to have a service contract with AR AIR CORP so we will never have deal with a unskilled technician like last week when the Condenser stopped working in the heat wave with 95 temps I'm my house . The former technician who couldn't find the control board part that I easily found online and missed all other problems in the unit leaving a mess of wires . It took 3 hours in the hot sun Ralphie figured all the problems out in the Condenser and got it working again. Ralphie went out his way to help us because my husband has Parkinson's and he felt for us in his condition and that he is kind person who cares ! Ralphie explains everything in detail and has shown us as the owner of AR AIR CORP IS HE HONEST AND RELIABLE , I will highly recommend AR AIR CORP to my neighbors and friends and put their Business card in HOA CLUBHOUSE . Ralphie being on ANGI'S helped us to find such a skilled kind PROFESSIONAL HVAC TECHNICIAN , THANK YOU ANGI'S .Ralphie texted me immediately this past Saturday even out of town, such great service ABOVE AND BEYOND also love the texting of confirming appointment and on the way texts , thank you Ralphie"

gerr s on July 2025


Avatar for Natural Breeze LLC.
Natural Breeze LLC.
5.00(
6
)
Approved Pro
Natural Breeze LLC.
5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
62 local quotes requested

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

"Really happy with the work performed. Great communication, they arrived when they said they would, and quickly and successfully repaired the issue!"

Steven G on June 2024

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

"Really happy with the work performed. Great communication, they arrived when they said they would, and quickly and successfully repaired the issue!"

Steven G on June 2024


Avatar for JB Comfort Heat and Air Conditions
JB Comfort Heat and Air Conditions
4.78(
36
)
Approved Pro
JB Comfort Heat and Air Conditions
4.78(
36
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
56 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!!

"Joe was great! Put my sofas together. Cleaned up boxes, debris. I had a question and he came back (he was nearby) to help me :)"

Eve S on January 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!!

"Joe was great! Put my sofas together. Cleaned up boxes, debris. I had a question and he came back (he was nearby) to help me :)"

Eve S on January 2025


Avatar for KS Mechanical Services
KS Mechanical Services
481 Johnson Ave
4.67(
12
)
Approved Pro
KS Mechanical Services
481 Johnson Ave
4.67(
12
)
Approved Pro
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
217 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 Arvada Mechanical Corp.
Arvada Mechanical Corp.
15 Cuttermill Rd Suite 105
4.73(
15
)
Approved Pro
Arvada Mechanical Corp.
15 Cuttermill Rd Suite 105
4.73(
15
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
84 local quotes requested

? End of winter special for all new customer! ? ?$69.99 special diagnostic fee for troubleshooting or general heating system evaluations. ? ? Call now at (516) 260- 4328! HVAC Gurus. That’s what the competition calls Arvada Mechanical. We are the company that your local company calls when they don’t know what to do. We specialize in all Heating, Air Conditioning and Water Heater Repairs. We are certified by some of the most prestigious Boiler, AC and Water Heater companies in the nation and it shows in our work and professionalism. This includes: AO Smith, American, Whirlpool, John Wood. We are Certified by BAXI and Weil McLain as authorized reps. We have been in the industry since 1997 and we’re not going anywhere anytime soon. Family owned and operated and every customer is treated like family!

"No service / No Contact"

Martyt A on January 2021

? End of winter special for all new customer! ? ?$69.99 special diagnostic fee for troubleshooting or general heating system evaluations. ? ? Call now at (516) 260- 4328! HVAC Gurus. That’s what the competition calls Arvada Mechanical. We are the company that your local company calls when they don’t know what to do. We specialize in all Heating, Air Conditioning and Water Heater Repairs. We are certified by some of the most prestigious Boiler, AC and Water Heater companies in the nation and it shows in our work and professionalism. This includes: AO Smith, American, Whirlpool, John Wood. We are Certified by BAXI and Weil McLain as authorized reps. We have been in the industry since 1997 and we’re not going anywhere anytime soon. Family owned and operated and every customer is treated like family!

"No service / No Contact"

Martyt A on January 2021


Avatar for BB O Construction Corp
BB O Construction Corp
245 South Broadway
5.00(
3
)
Approved Pro
BB O Construction Corp
245 South Broadway
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
699 local quotes requested

We have been in the Real Estate business for over 25 years. Owner of the company has extensive experience in every aspect of a home building and maintainance process. As an HVAC services provider we have helped countless customers to get their needs met and or exceeded their expectations. We are approved by NYSERDA ( NYS) Special financing offer for Heat Pump through which we are able to offer loans up to $25,000 with interest rates as low as 4% with terms up to 15 years! keep the payments Affordable and low. We are also Approved Contractor for Con Edison Rebate program, Saving our customers Thousands. Most of our jobs are completed in One Day! Call us today and lets get your Heating & Cooling issues resolved. We do not offer Boiler services.

"Was happy with the work and product installed"

Anthony I on February 2025

We have been in the Real Estate business for over 25 years. Owner of the company has extensive experience in every aspect of a home building and maintainance process. As an HVAC services provider we have helped countless customers to get their needs met and or exceeded their expectations. We are approved by NYSERDA ( NYS) Special financing offer for Heat Pump through which we are able to offer loans up to $25,000 with interest rates as low as 4% with terms up to 15 years! keep the payments Affordable and low. We are also Approved Contractor for Con Edison Rebate program, Saving our customers Thousands. Most of our jobs are completed in One Day! Call us today and lets get your Heating & Cooling issues resolved. We do not offer Boiler services.

"Was happy with the work and product installed"

Anthony I on February 2025


RVM Heating & Air Conditioning
48 Heyward St
New on HomeAdvisorNew on Angi
Approved Pro
RVM Heating & Air Conditioning
48 Heyward St
New on AngiNew on HomeAdvisor
Approved Pro
288 local quotes requested
5 years of experience

With over 5 years of experience, RVM Heating & Air Conditioning is committed to excellence 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. Call us today! Free Estimates!

With over 5 years of experience, RVM Heating & Air Conditioning is committed to excellence 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. Call us today! Free Estimates!


Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
35 COURT ST
4.68(
60
)
Approved Pro
All Weather Heating & Cooling
35 COURT ST
4.68(
60
)
Approved Pro
Customers say: Super punctual
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
443 local quotes requested

All Weather Heating & Cooling has been serving Nassau & Suffolk County of Long Island since 1969. We are now celebrating 54 years of exceeding customer expectations. All Weather provides sales, installation, service and maintenance of residential and commercial heating, air conditioning & water filtration systems.

"They installed a minisplit cooling system, with 3 exchanges June 2021. Since then it is not operating the way it should. In my bedroom with the door closed at night on cool at 70 degrees the humidity goes up to 80%. I wake up uncomfortable, change it from cool to dry mode. The humidity will go down into the 50% range but the temperature drops down to 62 or less! So in cool or dry mode I can't get a good nights sleep! They come and look at it and tell me everything is fine. I'm going to buy a window air conditioner tomorrow which seems insane because i spent $10,000 on this minisplit AC system!"

JIM G on June 2023

All Weather Heating & Cooling has been serving Nassau & Suffolk County of Long Island since 1969. We are now celebrating 54 years of exceeding customer expectations. All Weather provides sales, installation, service and maintenance of residential and commercial heating, air conditioning & water filtration systems.

"They installed a minisplit cooling system, with 3 exchanges June 2021. Since then it is not operating the way it should. In my bedroom with the door closed at night on cool at 70 degrees the humidity goes up to 80%. I wake up uncomfortable, change it from cool to dry mode. The humidity will go down into the 50% range but the temperature drops down to 62 or less! So in cool or dry mode I can't get a good nights sleep! They come and look at it and tell me everything is fine. I'm going to buy a window air conditioner tomorrow which seems insane because i spent $10,000 on this minisplit AC system!"

JIM G on June 2023


Avatar for Varsity Home Service
Varsity Home Service
1610 Ocean Ave
4.28(
81
)
Approved Pro
Varsity Home Service
1610 Ocean Ave
4.28(
81
)
Approved Pro
Customers say: Super punctual
195 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!

"I would have given 5 stars for quality but the price charged seemed overly excessive It was to replace a leaking faucet in the garage. I was charged less to have a toilet installed."

Alan K on July 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!

"I would have given 5 stars for quality but the price charged seemed overly excessive It was to replace a leaking faucet in the garage. I was charged less to have a toilet installed."

Alan K on July 2025

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FAQs for heating and air conditioning service projects in Stony Brook, NY

Knowing how long your existing HVAC units can last is essential to determine if you need a repair or replacement. Typically, most modern air conditioning units can last between 15 to 20 years, and most furnaces can work properly for 15 to 30 years. If your HVAC system is on the older side and you decide to replace one unit, it might make sense to replace both simultaneously to save on costs and future hassle.

While different HVAC contractors might offer higher or lower prices than competitors, the best time to replace your HVAC system is when customer demand is low. The beginning of summer and the beginning of winter bring the most demand for HVAC systems, so if you can, consider replacing your HVAC units in the early spring or fall. Many HVAC companies offer special off-season coupons that help lower the overall cost.  

The average cost to hire an HVAC contractor is between $50 and $150 per hour if charging hourly. However, some HVAC contractors will charge a flat fee by the type of service they are performing—for example, an inspection can cost between $150 to $500. Keep in mind that emergency repairs—which are made after business hours or around major holidays—generally cost more than scheduled repairs.

Yes, most states require HVAC technicians to be certified, and for good reason. Hiring an unlicensed HVAC technician could lead to poor quality work, costly future expenses, and potential code violations. 

As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include: 

  • The owner, principal, or relevant manager passed a criminal background check

  • Required to have applicable state and local licenses

  • Maintain an average star rating of 3.0 or better on our network, if they have at least one review

  • Paying to advertise their services

  • Meeting any other eligibility criteria required by Angi

Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.

The average cost of HVAC repairs is around $350. However, that price can be as low as $100 or as high as $2,000 or more, depending on the repair. For example, replacing a capacitor is a relatively inexpensive repair, ranging from $100 to $500. However, a compressor repair is a more expensive repair, ranging from $750 to $2,000.  

The Stony Brook, 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.
woman on couch using remote to adjust air conditioner
Apr 28, 2025
Apr 28, 2025
When your window AC isn’t cutting it, but central AC is too expensive, installing a new ductless mini-split AC may be the cooling solution you’re looking for. Find out what a mini-split costs and how to hire the right pros to get the job done.
Father and son playing at home
Apr 24, 2025
Apr 24, 2025
Heating and cooling system on the fritz? Discover the factors that go into HVAC repair costs and how you can save money on this crucial home update.
May 27, 2025
May 27, 2025
Springing for HVAC maintenance costs may seem like an extra—and easy-to-ignore—item on your checklist, but it will save you money in the long run.
An attic turned into a minimalistic bedroom
Apr 6, 2025
Apr 6, 2025
If you’re wondering why your attic is so hot, take a closer look at the ventilation, insulation, and your roof to find the best solution for cooling it down.
Mother helping daughter put on coat
Apr 3, 2025
Apr 3, 2025
Entering your home should remove a chill, not create one. If your house is colder than the outside, talk to a pro to find the cause and fix it.
mother and child adjusting temperature in home
May 29, 2025
May 29, 2025
Wondering 'what tonnage of AC do I need?' Read our guide to learn about AC tonnage, finding the right tonnage for your home's cooling system, calculating the square footage of your home, and who to hire to calculate AC tonnage for you.
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