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#1 HVAC Services in Long Island
For Residential & Commercial

HVAC Contractor

Emergency Service

Heating Installation
& Repairs

AC Installation
& Repairs

Mini-Splits Installation
& Repairs

#1 HVAC Services in Long Island
For Residential & Commercial

HVAC Contractor

Emergency Service

Heating Installation
& Repairs

AC Installation
& Repairs

Mini-Splits Installation
& Repairs

With 247 HVAC of Long Island You Get Expert Advice & Quality Work

For over 30 years, we have been keeping Long Island homes comfortable, no matter the season.

Over the years, one thing that’s never changed has been our team’s commitment to superior customer service. Our friendly, professional and fully licensed technicians will help you, whether you need emergency HVAC repairs or are looking to replace old equipment.

We’ve served thousands of homes and businesses in Long Island with fast responses, honest pricing, and high-quality workmanship.


Our Residential & Commercial HVAC Services

Customer Reviews

5.0 Average
  • I came across 24/7 HVAC of Long Island when I was looking for a local AC repair company. This company has been in business for over 30 years and has a great reputation for their work. They are prompt and professional, and I always feel safe and satisfied when I call them for work. The technicians that come out are always friendly and knowledgeable. This is a company that I will continue to use in the future and one that I highly recommend.

    Martin Marks

    David did a fantastic job! He cleaned and serviced our air conditioner and installed something that made it run more efficiently (I can’t remember what he called it but it worked!). Also, he took the time to fix the installation of the thermostat that wasn’t quite correct. So professional. We are extremely pleased with today’s service. Thank you 247 HVAC OF LONG ISLAND we signed up for another year maintenance plan.

    Daniela2 Kleinre

    The nicest people and best service! Fixed all our HVAC issues - great people and company and highly recommend!

    Lindsey Owen

    Turned out my emergency switch was off (thanks kids). Edgar was professional and get helpful and did a thorough check on my units. Very pleased!

    John Bailey
  • 247 HVAC OF LONG ISLAND was very professional and knowledgeable. They helped figure out a new system for my old house to make things more efficient and save me money. They set up a whole house heating and ac system and have helped me trouble shoot any problems I may have. I trust this company and we’ll continue doing business with them.

    Yeow Thomas

    I was referred to 24/7 HVAC of Long Island by a friend. The crew was professional and courteous. They communicated well and did a thorough job of repairing my heating system. The price was fair as well!

    Matthew Barreto

    My furnace was super dirty so before the cold I just wanted to mKe sure it was all good. A friend recommended 247 hvac. They came on time did a thorough cleaning of the furnace, replaced a few filters in the house and made sure everything was running properly. Very clean work. Thank you for the service!

    Htet Lin .A

    There was a serious leak coming from my furnace. Matthew came to our house right away, provided excellent service, and solved the problem. He even followed up afterwards to ensure the leak did not persist. Will be using him for my yearly furnace maintenance from now on! Highly recommended!

    Javier Cruz
  • I called 24/7 HVAC of Long Island in the evening and Matthew came 15-20 mins after. He was able to diagnose the issue within 15 mins and provide a fix for us. Thanks to him for a great service.

    Lyric Lamb

    Luis replaced a heat pump. He was very professional, polite, and solved the problem. We would use Luis for other appliance needs..?

    Thomas Morgan

    I'm a long time customer! 247 HVAC is always there for me when I need them for my rental properties!

    Mg Moe Mg Moe

    We had a wonderful experience with 24/7 HVAC of Long Island! They were friendly, knowledgeable, and made sure we understood exactly what was wrong with our AC unit. We will definitely be calling them in the future!

    Maurice Hart
  • I would highly recommend this company; they're professional and reliable. The workers are really knowledgeable and didn't mind going above and beyond, which is why they were able to figure out the source of my heating issues.

    A Google User

    Top of the line work! They installed a mini split in my sons room and we are very happy with the work and service provided by this company!

    Vincent Watkins

    Luis did a great job fitting our new air conditioning unit. Kept us well informed with when the kit was going to be in stock and completed the job in a morning with no fuss or mess. Highly recommend them.

    Thomas Leech

    David and crew did a great job on getting the furnace running again. Thanks for the effort. Will use again this company.

    Mark Sargeant
  • The boiler at my father's house had some issues and I couldn't get anyone to fix it. After getting 3 estimates 247 HVAC came right in the middle so I went with them! I am so happy we did because the work they did is so clean works great and they are very professional!!! I will use this company in the future!

    ko lin

    I want to thank edgar our tech! He was so nice and explained everything he was doing! Thank you for the great service!!

    Louie Gentry

    Excellent service today from David and Edgar of 247 HVAC OF LONG ISLAND ! They arrived promptly and were friendly/comfortable to have in my home. Took care of maintenance issues with our boiler and radiators. So pleased with their service that we signed up for yearly maintenance plan. I highly recommend this company, and these 2 employees in particular.

    Charlie Taylor

    Great Company. They Are really helpful and polite. Thank you 247 HVAC OF LONG ISLAND.

    Emmanuel Deterro

Why Choose Us

You are in safe hands

As one of Long Island's oldest heating and cooling companies, we’ve had over 40 years to perfect the quality of our customer service. While technology keeps improving, we have never forgotten that it’s the people that matter, from our technicians to your family.

Expertise and Reliability

Our technicians who love what they do. It shows in everything from their delight in ongoing education to just arriving at your door on time.

Always Available

We’re there for you 24 hours 7days a week, when you need us. Contact us for a consultation, estimate, or any question you might have about your project or our work.

Service Areas