Air Conditioning Systems in Nassau County, NY

Nassau County Air Conditioning SystemsMother Nature has turned up the heat once again in Nassau County, NY, and your old air conditioning system is working overtime to keep you cool. But, you’re not as comfortable as you’d like to be, and your utility bills are through the roof! If your air conditioning system is more than 10 years old and seems to be underperforming more and more each summer, it’s probably time to start thinking about a replacement.

There’s no need to suffer when the weather outside in Nassau County 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 Nassau County residents – we’ve been doing so for more than 85 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 Nassau County residents 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. Simply call us at 516.488.1800.

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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

    Choose T.F. O’Brien for the new air conditioning system in your Nassau County, NY home.

    At T.F. O’Brien, we’re proud to say that we always make our customers our number one priority. When you need a new air conditioning system for your Nassau County, NY home, we’re ready to assist you. We take great pride in helping you get the right AC system for your home, your lifestyle and your budget, and we work with you every step of the way, from installation to your yearly maintenance. In fact, T. F. O’Brien is a full service air conditioning contractor. In addition to air conditioning system installations, we’re also pleased to provide:tfo areas served