Mini-Split Air Conditioning & Heating in Long Island, NY

If there’s a space in your home that needs air conditioning or heating, but the installation of ductwork is either impossible or impractical, then it may be time to consider mini-split air conditioning and heating from T.F. O'Brien. With nearly 80 years of experience keeping Long Islanders comfortable, T.F. O'Brien has the expertise to provide mini-split AC and heating to help you and your family stay more comfortable.

Mini-split air conditioning and heating systems provide comfort to specific spaces in your home – without additional ductwork. No matter what your mini-split air conditioning and heating needs, there are many mini-split systems available that will provide you with the efficiency, aesthetics and comfort of a traditional system, with higher efficiency than a window air conditioning system or a space heater.

When you’re ready to install a mini-split air conditioning and heating system in your Long Island home, turn to the experts at T.F. O'Brien for courteous and professional service. T.F. O'Brien proudly serves all of Long Island, including Nassau County, Suffolk County, and Brooklyn. Just call us at 516.488.1800 and we’ll be happy to assist you.

ductless systems
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Dual Purpose
Heating and Cooling

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Up To 40% Less Energy Used
Than Traditional Systems

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Save Money
With Lower Energy Bills

Get Started with an Estimate

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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    "Completely Satisfied"

    "I was completely satisfied with the professionalism, quality, and courteousness of your service. I will continue to call on and recommend you all future AC/Heating needs. Thank You."

    - T.F., Baldwin, NY

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    85+ years of service



    Five Stars


    Five Stars

    T.F. O’Brien review scores as of 4/12/24


    See how Daikin ductless systems can improve your comfort and save you money

    Unlike single speed systems, Daikin ductless inverters offer variable speeds for more efficient home comfort.

    Hear the difference in a Daikin ductless system from T.F. O'Brien

    Our ductless solutions are engineered to operate under 50 decibels. Comfortably enjoy your home with a Daikin ductless system.