Top-Rated Air Conditioning Repair in Long Island, NY
24/7 Emergency Service

Reach out to the experts at Rebmann Plumbing, Heating & Air Conditioning if you have a plumbing or HVAC emergency in Long Island. We’re here to help 24/7. If your furnace goes out in the winter or your AC stops cooling in the middle of summer, we’ll repair it day or night. Call our team at 516-746-5678 for emergency services in Long Island, Roslyn, or Port Washington, NY. Residential and commercial repairs available.

Trusted AC Repair in Long Island, NY

Air conditioner maintenance being performedThanks to Long Island’s warm and humid summers, residents need efficient and effective cooling systems to keep their homes comfortable all season. Trust Henry Rebmann Plumbing and Heating LLC for superior AC repair services when your system isn’t up to the task. Our licensed and insured technicians offer service for all brands and receive continual training to ensure you get the best service. Plus, with our 24/7 emergency service, you can trust we’ll be there for you!

Don’t suffer in the heat! Call us to schedule AC repairs in Port Washington or Roslyn, NY.

24/7 Emergency Air Conditioning Repair

If your AC breaks down on an 80-degree day, it’s more than an inconvenience — it’s an emergency. Especially for families with children or older adults in the home, a lack of AC can put your health and safety at risk. With same-day repairs from Henry Rebmann Plumbing and Heating LLC, you’ll get fast service to restore your cooling and comfort.

5 Signs Your AC System Needs Repairs

If your system isn’t operating at peak performance, it may be time for professional repairs. Signs you need our help include:

  • Warm air: When your AC blows warm air, it could be an issue with a compressor or your system’s refrigerant.
  • Foul odors: Unusual bad smells could indicate everything from electrical issues to mold contamination and should be diagnosed by a professional.
  • Minimal airflow: Reduced airflow is often a sign that your system can’t function efficiently and may be due to blockages.
  • Leaks: If you see liquid at the base of your system, it may be water or refrigerant and should be repaired immediately.
  • Strange noises: Rattling, buzzing, and grinding are all signs that you have an issue with your system’s components.

Air Conditioning Systems We Service

The expert technicians at Henry Rebmann Plumbing and Heating LLC are highly trained and have experience working on a variety of cooling systems, including:

Why Choose Us?

Since 1938, Henry Rebmann Plumbing and Heating LLC has provided superior service and unmatched professionalism to the residents of Long Island. Our same-day emergency services ensure that your comfort is never compromised. Plus, we offer FREE replacement estimates and financing options if repairs don’t cut it. It’s all part of our dedication to providing our customers with only the best service.

Ensure your cooling can keep up with the Long Island or Garden City summer heat! Request AC repair today by calling us or contacting us online. 


There are many reasons that your AC may not be cooling even when it’s running. The most common causes include:

  • Frozen evaporator coil
  • Clogged air filters
  • Tripped breaker
  • Dirt on the condenser
  • Refrigerant leak
  • Leaky ductwork

For an accurate diagnosis, contact our experts and get the repairs needed to restore your system.

When your mini-split won’t turn on, it’s often a problem with the power supply or a faulty thermostat. Our expert technicians can perform a thorough inspection to determine the source of the issue and perform the necessary repairs.

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Rebmann Service Partner Plans

What To Expect

Discover the Rebmann Difference

24/7 On-Call Emergency Service
Minimum One-Year Warranty on all Products and Services
Family-Owned Since 1930
Convenient Service Partner Plans
Low Interest, Flexible Payment Financing Options
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Our Reviews

See What Your Neighbors Are Saying

I was very happy I chose to work with Rebmann. They were very professional and courteous. Finished the install in record time and back up their work as well.

Jeff F.

Jeff F.

Very happy with the service provided. The team knows what they are doing, they are professional, efficient, punctual, nice. They follow up to make sure everything is OK. I would definitely recommend.

Hubert A.

Hubert A.

First time customer and couldn’t be more happy with the service I received. Professional, caring and knowledgeable!! Will definitely call again.

Regina V.

Regina V.

Rebmann installed a new gas furnace. I couldn't have been more satisfied with the experience in every respect. Professional, competent, punctual and polite. I recommend highly. My technician and the rest of the crew were outstanding.

Eileen M.

Eileen M.

Rebmann is an excellent service provider. We've been using them for 20 years! They are always very responsive and their technicians are professional, courteous, friendly and knowledgeable.

Dennis P.

Dennis P.