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Comfort You Can Trust.

Comfort You Can Trust.

Long Island's premier heating and cooling experts.

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All prices are estimates only and not binding. Final pricing may vary based on many factors such as but not limited to, site conditions, permits, code requirements, electrical or gas upgrades and equipment selection.
Our Promise

Why Choose K2

Licensed & Insured

Fully certified technicians you can trust in your home.

24/7 Emergency

We are here when you need us most, day or night.

Expert Repairs

We fix it right the first time, every time.

Fair Pricing

Transparent quotes with no hidden fees.

Special Offers

Limited Time Savings

LIMITED TIME

5% Off All Services (New Clients Only)

Special offer for new clients: Get 5% off on all heating, air conditioning, and indoor air quality services across Long Island.

NEWCLIENT5

Valid until: Dec 31, 2026

LIMITED TIME

Refer a friend, get $50 off on your next service

Refer a friend or neighbor to K2 and receive a $50 discount on your next HVAC repair or maintenance service.

REFER50

Valid until: Dec 31, 2026

LIMITED TIME

$250 off new Installation

Save $250 on any new high-efficiency central air conditioning, heat pump, furnace, or boiler installation.

SAVE250

Valid until: Dec 31, 2026

24/7 Emergency Service

Our technicians are standing by to help restore your comfort.

15-Mile Fast Dispatch Radius

Areas We Serve

Dispatched 24/7 directly from our central headquarters at 60 S 2nd St V, Deer Park, NY. We proudly serve every community within a 15-mile radius across Suffolk and Nassau counties.

Deer ParkSuffolkHQWyandanchSuffolk2miWheatley HeightsSuffolk2.1miNorth BabylonSuffolk2.2miDix HillsSuffolk2.3miWest BabylonSuffolk3.4miBrightwatersSuffolk4.1miWest IslipSuffolk4.1miBabylonSuffolk4.6miBrentwoodSuffolk4.6miMelvilleSuffolk5miBay ShoreSuffolk5.1miElwoodSuffolk5.2miLindenhurstSuffolk5.7miCommackSuffolk5.9miFarmingdaleNassau6.4miIslipSuffolk6.5miOld BethpageNassau6.6miCopiagueSuffolk6.8miGreenlawnSuffolk7miCentral IslipSuffolk7.1miSouth FarmingdaleNassau7.1miHuntington StationSuffolk7.2miIslip TerraceSuffolk7.3miPlainviewNassau7.3miAmityvilleSuffolk7.4miEast NorthportSuffolk7.8miHauppaugeSuffolk7.9miEast IslipSuffolk8miBethpageNassau8.1miPlainedgeNassau8.3miWoodburyNassau8.4miIslandiaSuffolk8.6miMassapequa ParkNassau8.6miHuntingtonSuffolk8.9miCenterportSuffolk9miGreat RiverSuffolk9.4miSmithtownSuffolk9.4miKings ParkSuffolk9.4miMassapequaNassau9.4miCold Spring HarborSuffolk9.7miNorthportSuffolk9.8miOakdaleSuffolk9.8miVillage of the BranchSuffolk9.8miSyossetNassau10miLevittownNassau10miRonkonkomaSuffolk10.2miHicksvilleNassau10.3miSeafordNassau10.4miHuntington BaySuffolk10.5miBohemiaSuffolk10.7miNesconsetSuffolk11miJerichoNassau11.1miWantaghNassau11.2miAsharokenSuffolk11.4miNorth BellmoreNassau11.5miMuttontownNassau11.9miLloyd HarborSuffolk12miWest SayvilleSuffolk12miSt. JamesSuffolk12.1miLake RonkonkomaSuffolk12.2miEast NorwichNassau12.2miBellmoreNassau12.2miNissequogueSuffolk12.4miEast MeadowNassau12.5miSalisburyNassau12.6miNorth MerrickNassau12.7miOyster BayNassau12.8miEatons NeckSuffolk13miSayvilleSuffolk13.1miHead of the HarborSuffolk13.1miBrookvilleNassau13.2miMerrickNassau13.5miWestburyNassau13.5miHolbrookSuffolk13.6miUpper BrookvilleNassau13.7miBayportSuffolk14.5miCarle PlaceNassau14.8mi
What Our Clients Say

Testimonials

"K2 relocated my thermostat. Great service and polite staff. Fast, efficient, and very neat installation!"

S

Stacy Seecharan

Verified Homeowner
Google ↗

"This was my first time using K2 Cooling & Heating, and I could not be happier with the experience. Waseem arrived on the scheduled day right on time and took the time to listen carefully to the issues I was having with my HVAC unit before beginning any work. He quickly diagnosed the problem and explained everything clearly in a way that was easy to understand. His professionalism, knowledge, and attention to detail were outstanding."

S

Shahid Ali

Verified Homeowner
Google ↗

"This is my second (distinct) job with K2 HVAC and I could not be more appreciative of their prompt and quality services. The first job (a replacement of my heating unit) was handled excellently by Shelby and the second (a replacement of my hot water unit) was amazingly handled by Waseem. The backend customer support is fantastic too, as Sadia is ever responsive by text and phone call. All said, I recommend their services wholeheartedly!"

t

tobi bell

Verified Homeowner
Google ↗

"Waseem is excellent. He checked my heating system, diagnosed the problem and fixed the whole system. Now the heat is working excellently. I am highly recommending this company to any person house. He is very thorough and spent as much as was needed to repair the heat. We are very thankful. He is excellent. Thank you so much to your company."

T

Tamara Shashiashvili

Verified Homeowner
Google ↗

"Nice company, good experience, nice people and nice workers. Very respectful technicians who treat your home with care."

M

Mevlut Cil

Verified Homeowner
Google ↗

"Great customer service, fair prices and good work. Will definitely be using again!"

A

Ariba Hashmi

Verified Homeowner
Google ↗

"K2 relocated my thermostat. Great service and polite staff. Fast, efficient, and very neat installation!"

S

Stacy Seecharan

Verified Homeowner
Google ↗

"This was my first time using K2 Cooling & Heating, and I could not be happier with the experience. Waseem arrived on the scheduled day right on time and took the time to listen carefully to the issues I was having with my HVAC unit before beginning any work. He quickly diagnosed the problem and explained everything clearly in a way that was easy to understand. His professionalism, knowledge, and attention to detail were outstanding."

S

Shahid Ali

Verified Homeowner
Google ↗

"This is my second (distinct) job with K2 HVAC and I could not be more appreciative of their prompt and quality services. The first job (a replacement of my heating unit) was handled excellently by Shelby and the second (a replacement of my hot water unit) was amazingly handled by Waseem. The backend customer support is fantastic too, as Sadia is ever responsive by text and phone call. All said, I recommend their services wholeheartedly!"

t

tobi bell

Verified Homeowner
Google ↗

"Waseem is excellent. He checked my heating system, diagnosed the problem and fixed the whole system. Now the heat is working excellently. I am highly recommending this company to any person house. He is very thorough and spent as much as was needed to repair the heat. We are very thankful. He is excellent. Thank you so much to your company."

T

Tamara Shashiashvili

Verified Homeowner
Google ↗

"Nice company, good experience, nice people and nice workers. Very respectful technicians who treat your home with care."

M

Mevlut Cil

Verified Homeowner
Google ↗

"Great customer service, fair prices and good work. Will definitely be using again!"

A

Ariba Hashmi

Verified Homeowner
Google ↗

"K2 relocated my thermostat. Great service and polite staff. Fast, efficient, and very neat installation!"

S

Stacy Seecharan

Verified Homeowner
Google ↗

"This was my first time using K2 Cooling & Heating, and I could not be happier with the experience. Waseem arrived on the scheduled day right on time and took the time to listen carefully to the issues I was having with my HVAC unit before beginning any work. He quickly diagnosed the problem and explained everything clearly in a way that was easy to understand. His professionalism, knowledge, and attention to detail were outstanding."

S

Shahid Ali

Verified Homeowner
Google ↗

"This is my second (distinct) job with K2 HVAC and I could not be more appreciative of their prompt and quality services. The first job (a replacement of my heating unit) was handled excellently by Shelby and the second (a replacement of my hot water unit) was amazingly handled by Waseem. The backend customer support is fantastic too, as Sadia is ever responsive by text and phone call. All said, I recommend their services wholeheartedly!"

t

tobi bell

Verified Homeowner
Google ↗

"Waseem is excellent. He checked my heating system, diagnosed the problem and fixed the whole system. Now the heat is working excellently. I am highly recommending this company to any person house. He is very thorough and spent as much as was needed to repair the heat. We are very thankful. He is excellent. Thank you so much to your company."

T

Tamara Shashiashvili

Verified Homeowner
Google ↗

"Nice company, good experience, nice people and nice workers. Very respectful technicians who treat your home with care."

M

Mevlut Cil

Verified Homeowner
Google ↗

"Great customer service, fair prices and good work. Will definitely be using again!"

A

Ariba Hashmi

Verified Homeowner
Google ↗
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Our Blog

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Can I Actually Afford This? Let's Talk Monthly.

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