
Comfort You Can Trust.
Limitless Options. One Company.
Cost Estimator
- Instant price ranges for different systems
- Customized for your home size
- No commitment required
HVAC Instant Cost Estimate Tool
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
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.
Valid until: 2027-12-31
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.
Valid until: 2027-12-31
$250 off new Installation
Save $250 on any new high-efficiency central air conditioning, heat pump, furnace, or boiler installation.
Valid until: 2027-12-31
24/7 Emergency Service
Our technicians are standing by to help restore your comfort.
Areas We Serve
Dispatched 24/7 directly from our central headquarters at 60 S 2nd St, Deer Park, NY. We proudly serve every community within a 15-mile radius across Suffolk and Nassau counties.
Testimonials
"K2 relocated my thermostat. Great service and polite staff. Fast, efficient, and very neat installation!"
Stacy Seecharan
Verified Homeowner"This was my first time using K2 Cooling & Heating, and I couldn't 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."
Shahid Ali
Verified Homeowner"This is my second (distinct) job with K2 HVAC and I couldn't 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!"
tobi bell
Verified Homeowner"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's 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."
Tamara Shashiashvili
Verified Homeowner"Nice company, good experience, nice people and nice workers. Very respectful technicians who treat your home with care."
Mevlut Cil
Verified Homeowner"Great customer service, fair prices and good work. Will definitely be using again!"
Ariba Hashmi
Verified Homeowner"K2 relocated my thermostat. Great service and polite staff. Fast, efficient, and very neat installation!"
Stacy Seecharan
Verified Homeowner"This was my first time using K2 Cooling & Heating, and I couldn't 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."
Shahid Ali
Verified Homeowner"This is my second (distinct) job with K2 HVAC and I couldn't 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!"
tobi bell
Verified Homeowner"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's 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."
Tamara Shashiashvili
Verified Homeowner"Nice company, good experience, nice people and nice workers. Very respectful technicians who treat your home with care."
Mevlut Cil
Verified Homeowner"Great customer service, fair prices and good work. Will definitely be using again!"
Ariba Hashmi
Verified Homeowner"K2 relocated my thermostat. Great service and polite staff. Fast, efficient, and very neat installation!"
Stacy Seecharan
Verified Homeowner"This was my first time using K2 Cooling & Heating, and I couldn't 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."
Shahid Ali
Verified Homeowner"This is my second (distinct) job with K2 HVAC and I couldn't 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!"
tobi bell
Verified Homeowner"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's 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."
Tamara Shashiashvili
Verified Homeowner"Nice company, good experience, nice people and nice workers. Very respectful technicians who treat your home with care."
Mevlut Cil
Verified Homeowner"Great customer service, fair prices and good work. Will definitely be using again!"
Ariba Hashmi
Verified HomeownerTrusted Brands We Work With
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