Nassau County Ductless Heating & Air Conditioning Contractor

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If you have a room or space that needs additional heat or air conditioner, but can’t install a traditional HVAC system, you should look into ductless mini-split systems. T.F. O’Brien Cooling & Heating installs ductless heating and cooling systems in Nassau County and surrounding areas.

We’ve been helping Nassau County residents stay comfortable for nearly 80 years, and we want to help you too.

Ductless systems deliver the heating and cooling comfort of a traditional system to specific rooms in your home, without additional ductwork. Whether it’s in the garage, attic, or basement in your Nassau County home, we have a wide variety of ductless systems for you.

It will give you the efficiency, aesthetics and comfort of a traditional central heating and cooling system. Additionally, a ductless system is also an efficient and quiet alternative to a window air conditioning unit.

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

    To Your Success


    Five Stars

    1,767 reviews



    Five Stars

    1,183 reviews

    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.


    T.F. O’Brien offers ductless Heating & Air Conditioning products and services for your Nassau County home

    tfo areas servedWhen you work with T.F. O’Brien, your comfort always comes first. We believe you’ll be pleased with the variety of ductless heating and cooling services we offer to residents of Nassau County, including:

    T.F. O’Brien is pleased to provide Nassau County residents with the best ductless heating and cooling available. We pride ourselves in our craftsmanship and quality lineup of ductless products. We’ll strive to make you happy and comfortable, and we’re not satisfied until you are.

    T.F. O’Brien wants to be your Nassau County ductless contractor.

    We always look for your best interests and provide exceptional ductless products and services of the highest quality to ensure expected comfort and safety. The T.F. O’Brien team wants you to enjoy your experience working with us and never have to deal with a hassle. Our guarantee is that you’ll be 100% satisfied with the work we do for you – in fact, you won’t pay until you are.
    When you need a ductless contractor in Nassau County, T.F. O’Brien can help. Just call 516.488.1800.