Top-rated heating and air conditioning pros.

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

Enter your zip and get matched with up to 5 pros

Need a pro for your heating and air conditioning service project in Smithtown, NY?

Select your specific project to find the pro for you.

TRUSTED BY SMITHTOWN, NY HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon605
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Smithtown, NY

*The Angi rating for Heating And Air Conditioning Service companies in Smithtown, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Smithtown, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on July 31, 2025

Find Heating and air conditioning pros in Smithtown

Avatar for AR AIR CORP
AR AIR CORP
4.9(
78
)
Central A/C - InstallCentral A/C - Service or RepairBoiler or Radiator Heating System - Install or Replace+47 more

Serving Smithtown, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1999

Free estimates

Emergency services offered

"Rafael did a wonderful job installing 3 zone split HVAC system. On time, very clean and neat install. All questions gladly answered, just a great experience."
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 rate87%
7 neighbors recently requested a quote
Request Quote
Avatar for MSD Heating & Cooling
MSD Heating & Cooling
4.9(
74
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or Replace+47 more

Serving Smithtown, 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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

2 neighbors recently requested a quote
Recommended by96%of homeowners
Request Quote
Just Rite Heating and Cooling
4.9(
131
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Service or Repair+6 more

Serving Smithtown, NY and surrounding areas

Approved

In business since 1995

Free estimates

Credit card accepted

"Eric showed up for the estimate on time and called back a few days later to check in. Eric and his crew replaced my central air today. They showed up on time and got right to work. The install went quick and it looks professional and neat. Will recommend him to anyone needs HVAC."
Response time5 hrs
5 neighbors recently requested a quote
Recommended by98%of homeowners
Request Quote
Avatar for MassAir
MassAir
4.9(
64
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Service or Repair+11 more

Serving Smithtown, NY and surrounding areas

Approved

In business since 2007

Free estimates

Warranties offered

"Joe and his crew were very professional and my central air conditioner was priced at a very reasonable rate. The job was done on time . I would not hesitate to recommend Massair. Thanks Joe"
Furnace
Ductless mini-split
Air Handler
Condenser
Condenser

+9

Response time3 hrs
10 neighbors recently requested a quote
Recommended by96%of homeowners
Request Quote
Avatar for All Phase Duct Cleaning
All Phase Duct Cleaning
4.9(
71
)
Air Ducts & Vents - Clean

Serving Smithtown, NY and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Very Good I just thought it was expensive I thought they cleaned the outside unit also but all and they were excellent"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
2 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
Avatar for AC Air Duct Cleaning
AC Air Duct Cleaning
5.0(
27
)
Air Ducts & Vents - Clean

Serving Smithtown, 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
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+29

Response time7 hrs
Response rate100%
9 neighbors recently requested a quote
Request Quote
Avatar for Just Chillin HVACR, LLC
Just Chillin HVACR, LLC
4.9(
16
)
Central A/C - Service or RepairDuctless Mini-split A/C - Install or ReplaceDuctless Mini-split Heating System - Install or Replace+24 more

Serving Smithtown, NY and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Everyone from the owner of the business down to the technicians were very professional, cardio, and thorough Any questions that I had, they answered completely, and in a language that I understood. I would highly recommend just chillin!"
West Islip
West Islip
West Islip
Farmingdale
Farmingdale

+7

Response time10 hrs
Response rate85%
Recommended by100%of homeowners
Request Quote
Absolute Zero Air Conditioning & Heating
4.8(
100
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install - For Business+1 more

Serving Smithtown, 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 time8 hrs
4 neighbors recently requested a quote
Recommended by97%of homeowners
Request Quote
Avatar for JB Comfort Heat and Air Conditions
JB Comfort Heat and Air Conditions
4.6(
52
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallOil Boiler or Radiator Heating System - Install+25 more

Serving Smithtown, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"Joe was very respectful, personable and patient and explained what he would do and why to ensure our central air would finally work. It took ALL DAY but he installed an exhaust fan in the ceiling with attic ducts to draw out hot air, performed a chemical wash of the condenser, installed a wifi thermostat that required a new transformer and taught me how to use it. I LOVE being able to monitor indoor and outdoor temps on the app and I can see that our summer tenants are using it and that the AC is working great when needed."
Condenser cleaning
Condenser cleaning
Additional Photos
Additional Photos
Additional Photos

+11

Response time9 hrs
4 neighbors recently requested a quote
Recommended by80%of homeowners
Request Quote
Avatar for Comfort Ductwork Systems, Inc.
Comfort Ductwork Systems, Inc.
4.9(
73
)
Ductless Mini-split A/C - Install or ReplaceHeat Pump - Install or ReplaceDuctless Mini-split Heating System - Install or Replace

Serving Smithtown, NY and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Jonathan and his crew were very professional. There were no hidden costs. Quoted price, installed on time, cleaned up and made sure everything was working accurately. I would highly recommend them to anyone looking for HVAC work. I was very impressed by their quality."
Condensing Boiler & Indirect Hot Water Heater
Central HVAC
Oil Fired Boiler & Indirect Hot Water Heater
New Install
Thermostat Control

+2

Response time11 hrs
26 neighbors recently requested a quote
Recommended by94%of homeowners
Request Quote
...
Showing 1-10 of 827
Heating and Air Conditioning questions, answered by experts

Air conditioners and dehumidifiers are actually quite similar, though they perform different jobs. Dehumidifiers reduce moisture in the air, while air conditioners work to cool the home. A good central AC unit will naturally perform a certain level of dehumidification due to its design, but it will not be able to handle excessive levels of moisture.

If your whole house is cold that’s one thing, but what if you only have a few rooms that are cold? First, you need to determine why this may be happening. A good place to start is to investigate the potential causes listed in this article—heat transfer, airflow, thermostat problems, humidity, and insulation. Once you’ve narrowed down the issue, you’d apply the same principles to the cold rooms as you would to the entire home.

While personal preferences widely vary, sleep experts say the best temperature for sleeping is between 60 and 67 degrees Fahrenheit rather than 78. If you do choose to sleep with your AC unit tuned to 78 degrees, you might want to use only a sheet or light blanket rather than a comforter. You might also consider installing a window unit in your bedroom so that you can be cooler in bed without wasting energy cooling the whole house.

Traditional central air conditioning systems require ductwork to circulate air throughout the home. Alternatively, you can add air conditioning with a mini-split ductless air conditioning system, which can be just as energy efficient as a central air conditioner. This type of system consists of two units–an outside unit that holds the compressor and condenser and an indoor unit that holds an air-handler. With multi-zone ductless systems, there are multiple indoor air handlers tied to a single outdoor compressor/condenser, allowing the system to cool multiple rooms.

The American Society of Heating, Refrigerating, and Air-Conditioning Engineers, or ASHRAE, sets the standard guidelines for air changes per hour in homes and businesses. The International Residential Code, or IRC, also sets ACH requirements for residences and bases those requirements off of ASHRAE standards plus climate specifics related to your location.

The Smithtown, 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.

See all articles