Nassau County Furnace Contractor

gas furnacesDo you live in the Nassau County area and need furnace maintenance, repair or installation? T.F. O’Brien Cooling & Heating can help. We’ve been Nassau County’s furnace contractor of choice for nearly 80 years, and we want to help you, too.

T.F. O’Brien in the business of furnaces in Nassau County for nearly eight decades because, quite simply, we believe we should always put our customers first. When you need a trustworthy furnace contractor, count on T.F. O’Brien. We employ superior craftsmen with great attitudes and work ethics. Our top priority is meeting your furnace needs with courtesy, professionalism and expertise.

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

    T.F. O’Brien offers Nassau County residents a complete lineup of furnace services.

    tfo areas servedAt T.F. O’Brien, we want you to be perfectly comfortable. That’s why we offer a full listing of furnace services to meet all of your needs, including:

    T.F. O’Brien’s ultimate aim is to offer Nassau County residents the best furnace services possible. We proudly stand behind our workmanship and our entire lineup of furnace products. We will 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 furnace contractor.

    You can rest assured that T.F O’Brien always looks out for our customers’ best interests and provides exceptional furnace products and services of the highest quality to ensure expected comfort and safety. Everyone at T.F. O’Brien wants you to enjoy your experience working with us and to never have to deal with a hassle. We guarantee you’ll be 100 percent satisfied – and you won’t pay until you are.
    When you need a Nassau County furnace contractor, T.F. O’Brien is ready to assist you. Just give us a call at 516.488.1800.