Air Conditioning Systems on Long Island, NY

Long Island Air Conditioning SystemsThere’s no need to suffer when the weather outside on Long Island NY is sweltering – trust T.F. O’Brien to help you cool off with a new air conditioning system. We’re committed to providing the absolute best customer service and expert advice to Long Island residents – we’ve been doing so for more than 75 years!

T.F. O’Brien will always look out for your best interest and provide exceptional, high-quality air conditioning systems of to ensure expected comfort and safety. Our entire company strives to make sure you enjoy working with us and never have to deal with a hassle. We guarantee that you, the customer, after purchasing our products and/or services will be 100 percent satisfied – in fact, you won’t pay until you are.

At T.F. O’Brien, we’re pleased to provide Long Islanders with what we believe to be some of the best quality, most efficient, new air conditioning products on the market. If you’re looking for a quiet, attractive and energy efficient air conditioning system, T.F. O’Brien is ready to assist you. T.F. O’Brien proudly serves all of Long Island, including Nassau County, Suffolk County, and Brooklyn. Simply call us at 516.209.3925.

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Call T.F. O'Brien Cooling & Heating at (516) 488-1800 or complete our short form below and a representative will reach out to you.

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"Exceeded Expectations Throughout"


"The installation of a new central a/c unit exceeded expectations throughout the entire process...a true professional team throughout.

Thorough explanation of available options, responsive scheduling, seamless installation in one day by a diligent crew that took great care to be neat and clean, including the complete removal of the old system.

Would highly recommend the T. F. O’Brien team for installation of a new A/C system."

Jim Graf - Satisfied T.F. O'Brien Customer

72 reviews
72 reviews
229 reviews
229 reviews

T.F. O’Brien is a full-service air conditioning contractor. In addition to air conditioning systems on Long Island, NY we also provide:

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