Furnaces in Nassau County, NY

People in the Nassau County, NY area count on their furnaces to keep them warm all winter long. They need a furnace contractor who can keep their furnaces running in tip-top condition, and can assist them whether they need furnace repair, installation or maintenance. If you live in Nassau County, NY and want to keep your furnace running its best, then it’s good to know you can count on T.F. O’Brien Cooling & Heating to help you with any of your furnace needs. We’ve been in the business of helping people stay comfortable for more than 80 years, and we want to help you with any and all of your furnace needs, too.

T.F. O’Brien Cooling & Heating has been in the business of furnaces for decades because we have always put our customers first. When you need a furnace contractor you can trust, count on T.F. O’Brien to help. Our technicians are superior craftsmen who have great attitudes and work ethics, and our top priority is helping you with your furnace needs in an expert, professional and courteous manner. From the time you call us for help to the moment we’ve completed the job, we want you to be entirely happy with the furnace services we’ve provided in your Nassau County, NY home.

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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 complete furnace services throughout the Nassau County, NY area.

    At T.F. O’Brien Cooling & Heating, it’s important to us that you’re completely comfortable in your Nassau County, NY home. As a full-service furnace contractor, we offer a comprehensive listing of furnace services to meet all of your needs. Our furnace products and services include:

    • Gas Furnace Contractor in Nassau County, NY
    • Gas Furnace Repair in Nassau County, NY: T.F. O’Brien provides gas furnace repair services on most makes and models of gas furnaces, so no matter what type you currently have installed in your home, we can assist you. We’ll provide you with prompt service as well, so you can count on us having your gas furnace repair completed effectively and efficiently. Our technicians are equipped with top quality diagnostic tools and replacement parts, so you’ll know your gas furnace repair will reflect the professionalism and quality you’ve come to expect from us.
    • Gas Furnace Installation in Nassau County, NY: Has your old furnace seen better days? Then it might be time to consider a gas furnace installation, especially if you’ve been experiencing lower levels of comfort and higher utility bills. By choosing T.F. O’Brien to provide your gas furnace installation, you’re choosing highly trained experts in the field of home comfort – experts who want to provide you with the best gas furnace products on the market. You can count on your gas furnace installation to provide you with energy-saving comfort for years to come.
    • Gas Furnace Maintenance in Nassau County, NY: When the cold weather returns, you want to be sure the gas furnace in your home is operating effectively and efficiently. At T.F. O’Brien, we know that gas furnace maintenance is vital to the life of your equipment. That’s why we offer complete gas furnace maintenance plans to our customers, and why keeping your gas furnace in top condition is a priority to us. By maintaining your gas furnace, you’ll help it achieve peak performance, helping you save on energy bills and repair costs well into the future.
    • High Efficiency Gas Furnaces in Nassau County, NY: If you’ve been paying too much for your utilities and you’re still not staying as comfortable as you’d like during the winter months, then it’s time to call T.F. O’Brien for a high efficiency gas furnace. With nearly 80 years in the business of home comfort, we work hard to bring our customers all the latest innovations, including high efficiency gas furnaces that have been built to keep you comfortable – and help you save energy and money by offering up to 98 percent efficiency.
    • Gas Furnace Service in Nassau County, NY: The gas furnace in your home is one of the most important pieces of equipment you own. You and your family rely on it to keep you warm throughout the winter and to provide you with energy efficient heating. Did you know one of the best ways you can keep your gas furnace operating in top form is by making sure it receives the proper service? T.F. O’Brien can provide you with the gas furnace service to help ensure your system operates smoothly, efficiently and will keep your family warm all winter long.

    The staff at T.F. O’Brien completes every job with one objective in mind – to provide our customers throughout Nassau County, NY with the best furnace services available. We will work hard to ensure your complete satisfaction, and we never consider the job done until you’re entirely happy with the work we’ve done for you.

    T.F. O’Brien is focused on our Nassau County, NY customers and their furnace needs.

    tfo areas servedWe’re proud of our team of skilled technicians who are NATE-certified and trained to offer customers throughout the Nassau County, NY area the best furnace services available. Your best interests are always top-of-mind, and we strive to provide you with exceptional furnace products of the highest quality to ensure expected comfort and safety. It’s important to us that you enjoy your experience working with us, and we never want you to have to deal with a hassle. Our guarantee is that you’ll be 100 percent satisfied – you won’t pay until you are.
    Enjoy comfort all winter long in your Nassau County, NY home when you choose T.F. O’Brien Cooling & Heating for your entire furnace needs. We proudly offer complete furnace maintenance, repair and installation services, and serve all of Long Island, NY including Nassau County. Give us a call at 516.488.1800 and we’ll be happy to help you with all of your furnace needs.