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Best heating and air conditioning pros near Stony Brook, NY

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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon596
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Stony Brook - Updated Nov 2026

Avatar for AR AIR CORP
AR AIR CORP
4.9(
85
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or Replace+31 more

Serving Stony Brook, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1999

Free estimates

Emergency services offered

"Rafael is an amazing HVAC technician. I have been using him exclusively in both of my businesses and my personal home. He won me over when he came in the middle of zero degree weather to service my heat as it broke that day. I work with children so that was very important to have. He was the only one to answer and come right away. I have used him for over several years. As I write this he also just serviced my unit today for the AC. Couldn’t say enough good things about him!"
Heating and Air Conditioning Project
Heating and Air Conditioning Project
Heating and Air Conditioning Project
Heating & A/C Project
Installation of Merv13 Pleated filters I’m order to comply with State regulations.

+173

Response time9 hrs
Response rate100%
6 neighbors recently requested a quote
Avatar for MSD Heating & Cooling
MSD Heating & Cooling
4.9(
74
)
Central A/C - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+47 more

Serving Stony Brook, NY and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Can't speak highly enough of Ali. Prompt, courteous, but most importantly able to get to the bottom of problem without ripping off the customer. AN HONEST MAN! After many years of searching, I've finally found an HVAC repair company that I can trust! Happy days are hear again."
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+1

2 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for K.N. Heating and Cooling
K.N. Heating and Cooling
4.8(
353
)
Oil Boiler or Radiator Heating System - RepairCentral A/C - InstallDuctless Mini-split A/C - Install or Replace+1 more

Serving Stony Brook, NY and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Pros like Kevin are hard to find - he serviced and repaired my 2 central ac units, came right away, diagnosed the problem real quick, was courteous and professional and the price was reasonable. I have experienced 3 different hvac companies and Kevin is hands down the best - very highly recommended!"
a/c change out
steam oil boiler replacement
steam oil boiler replacement
indirect hot water heater
indirect hot water heater

+13

Response time2 hrs
3 neighbors recently requested a quote
Recommended by96%of homeowners
Just Rite Heating and Cooling
4.9(
132
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceHeat Pump - Install or Replace+6 more

Serving Stony Brook, NY and surrounding areas

Approved

In business since 1995

Free estimates

Credit card accepted

"I am not a review writer at all, however, I felt it only fair to write a review for Eric and Just Rite HVAC after a wonderful experience. This company and Eric the owner are, in a word, the BEST! I needed main floorâ s central AC replaced. A friend recommended me to Eric. I texted him and he responded with a few hours. setting up an appointment was fast and easy. Eric was knowledgeable and timely. My job was extremely difficult based on the location of my air handler and there was a high chance the ceiling would need to be opened for access. When Eric arrived for the job he inspected further and said he was going to try not to have to open the ceiling for access. He and his crew went well beyond what anybody else would have done and meticulously dismantled the old air handler piece by piece. It was time consuming, difficult and energy consuming. But they were able to do and saved me from having a gaping hole in my ceiling. They did an excellent job setting up the new air handler in the same location and even fixed errors the previous installer had made! The entire crew were highly professional, courteous and clean. They put down drop cloths everywhere and cleaned up everything when they were done. I highly, highly, and without reservation, recommend Eric and Just Rite HVAC and will tell anybody I know about them."
Response time5 hrs
4 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for MassAir
MassAir
4.9(
64
)
Gas Furnace / Forced Air Heating System - InstallCentral A/C - InstallDuctless Mini-split A/C - Install or Replace+11 more

Serving Stony Brook, NY and surrounding areas

Approved

In business since 2007

Free estimates

Warranties offered

"The guys at MassAir made having to get new central AC units installed, repairs on older units, new vents and ductwork, etc., actually a pleasurable experience! It is a family owned business, and I found Joe and his son Michael to be a real pleasure to work with. They are an extremely professional, proficient, knowledgeable, honest and hardworking team, and I trust them with any HVAC related projects that I have in the future. I 100% recommend giving these guys a call for your HVAC needs! -Mike Vedder"
Furnace
Ductless mini-split
Air Handler
Condenser
Condenser

+9

Response time3 hrs
15 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Arvada Mechanical Corp.
Arvada Mechanical Corp.
4.8(
18
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+39 more

Serving Stony Brook, NY and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"This Company is top notch! They quickly responded to my urgent message in regard to no heat in the house and had the service guy arrive to the door right after completing another job. They were very professional and did the repair in no time and price quoted over the phone was exactly what was charged for the service. We will definitely call this Company again for any boiler repairs. Thank you!"
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+4

Response time8 hrs
Recommended by87%of homeowners
Avatar for AC Air Duct Cleaning
AC Air Duct Cleaning
5.0(
30
)
Air Ducts & Vents - Clean

Serving Stony Brook, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"The assigned technician, John, was on-time, knowledgeable, provided suggestions, and thorough. Oftentimes, people don’t realize how important this service is. If I were you, I would book AC Air Duct cleaning!"
Additional Photos
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+29

Response time7 hrs
Response rate100%
2 neighbors recently requested a quote
Absolute Zero Air Conditioning & Heating
4.8(
100
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Repair+5 more

Serving Stony Brook, NY and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"Kyle installed my AC system in 2023 and I have nothing but good things to say about him and his company. I had him come back recently to trouble shoot my heating system and he really went above and beyond what I expected. I would recommend this company for any of your HVAC needs."
Response time7 hrs
8 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Wise Aire Mechanical Inc
Wise Aire Mechanical Inc
4.7(
50
)
Ductless Mini-split A/C - Install or ReplaceDuctless Mini-split Heating System - Install or Replace

Serving Stony Brook, NY and surrounding areas

Approved

In business since 2017

Free estimates

Small jobs welcome

"Everyone was very professional. They came and looked around and took measurements for ductless mini split ac units. They gave me a reasonable price and finished all the work in reasonable time as agreed to. Everyone was prompt and professional. They did clean work inside and outside the house and cleaned up after themselves when were done. If I ever need anymore work done I would definitely use these guys!!! Units work great! They answered all my questions abs continue to answer them as needed. Only a text away! Highly recommend!!!"
18k Ductless unit in family room & living room
Bedroom unit
Bedroom unit
Mitsubishi Condenser
Bedroom unit

+3

Response time7 hrs
1 neighbors recently requested a quote
Recommended by91%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

Freon will go in the refrigerant lines near the back of your AC unit. Look for small ports with caps on a thin copper line—the Freon goes into those ports. You are best off hiring a licensed HVAC professional who can complete the job safely and correctly.

The cost to replace an AC evaporator coil is typically between $600 and $2,500, with an average cost around $1,300 to $1,350. The price of the coil itself can range from $550 to $1,100, depending on the brand, size, and style, with professional labor adding around $700. Replacing a condenser coil is generally less expensive, costing about $800. Because this repair involves handling refrigerants, it requires a licensed AC professional. Regular inspections, which cost between $200 and $600, can help prevent costly coil replacements.

Your AC might not cool after a power outage because of a tripped circuit breaker, blown fuse, or damage to the compressor or capacitor. If you notice your AC not working after a power outage, in most cases, the breaker has tripped or the system has built-in brownout and blackout protection. Reboot the AC by turning it off at the thermostat, resetting the circuit breaker, and waiting 30 minutes to turn the AC on again. 

It depends on how fast an HVAC technician can resolve the issue. First, if there's a refrigerant leak, you’ll want to keep small children and pets out of the house. Next, you’ll want to turn off the AC unit to ensure no more freon enters your home. Finally, you’ll need an AC technician pro to come to your home and fix the leak immediately. Ultimately, it’s best to leave your home if you discover a freon leak—the risk of exposure is very high, and it’s not worth risking your health to stay.

No. Your furnace does not run your air conditioner. Both units use the same system of ductwork to move conditioned air throughout your home, but you can have a furnace without having an air conditioner and vice versa. Furnaces are only for heating your home. You can buy a system that does both, however, like a split system or a heat pump (yes, heat pumps cool, too).

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.