Ductless Heating & Air Conditioning Repair and Maintenance on Long Island, NY

When you need repair or maintenance for your ductless heating and cooling system, turn to the experts at T.F. O'Brien. For close to 80 years, T.F. O'Brien has been providing Long Islanders with expert repair, service and installation, and we want to help you with your ductless needs, too.

When you choose T.F. O'Brien to perform repair or maintenance on your ductless system, you’re choosing professionals the field of home comfort. We’re qualified to fully inspect, maintain and repair your ductless system, regardless of the make or model, and it is always our goal that you and your family are comfortable. That’s why it’s our guarantee that you’re 100 percent satisfied – and you won’t pay until you are.

When you need ductless maintenance or repair in your Long Island home, you can count on T.F. O'Brien for courteous, professional service. T.F. O'Brien proudly serves all of Long Island, including Nassau County, Suffolk County, and Brooklyn. Simply call us at 516.488.1800 and we’ll be pleased to assist you.

Ductless Air Conditioning
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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

    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.

    We also offer emergency repair services, seven days a week including holidays.

    T.F. O’Brien & Co is proud to provide exceptional maintenance and repair services, including emergency service, for residential and commercial customers in Nassau and Suffolk Counties. Get your system back up and running, promptly and professionally.