Install the perfect air conditioning and relax in comfort all year long

DC Service is a premier Long Island, New York air conditioning company. We serve Nassau County and Suffolk County, New York.

We use the latest technology and the best systems to condition the indoor living spaces quietly, efficiently and enjoyably.

Comfy-cool air conditioning

Installing Air conditioning is really about designing an indoor living space. We take your dreams and create an environment in which you and your whole family can enjoy. Let us make your dream indoor living space a reality.

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Why Choose a Ductless AC System?

Ductless air conditioning systems, also known as "mini-split" systems, are an excellent way to cool and heat a space.

How do Central AC Systems work?

Everything you ever wanted to know about how central air conditioning systems work but were afraid to ask.

Best AC System for a Small Office?

The Mitsubishi MSZ-FH15NA is a great indoor unit. Paired with the appropriate outdoor unit, this model has a cooling capacity of 15,000 btus and a heating capacity of 18,000 btus.


I hired DC Service to install a ductless system at our Huntington, NY office. They showed up on time with everything I wanted, installed and setup the whole system in a very professional manner. I couldn't recommend DC Service more.

Chris J.
- Huntington, NY