Furnace Contractor in Nassau County, NY

If you live in Nassau County, NY and need furnace maintenance, repair or installation, you can count on the professionals at T.F. O’Brien Cooling & Heating to help. We’ve been helping people throughout the Nassau County, NY area with their furnace needs for more than 80 years, and we want to help you too. You can trust us to be your reliable, full-service furnace contractor.

At T.F. O’Brien, we’ve been helping people with their furnace needs for so many years for the simple reason that we believe in always putting our customers first. When you need a professional, reliable furnace contractor, you can count on T.F. O’Brien. Our technicians are superior craftsmen with great attitudes and work ethics, and out main objective is meeting your furnace needs with expertise and courtesy. We strive to keep your Nassau County, NY home warm and toasty, no matter how cold the temperature outside.

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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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Choose T.F. O’Brien as the furnace contractor for your Nassau County, NY home.

At T.F. O’Brien, we want you to be completely comfortable in your Nassau County, NY home. We’ve been helping people with their home comfort needs for more than 80 years, and as a full-service furnace contractor, we proudly offer a comprehensive listing of furnace services to meet all of your needs. We’re pleased to offer:

  • Gas Furnaces 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.
  • Oil Furnace Repair in Nassau County, NY: Nobody wants to think about needing an oil furnace repair on the coldest night of winter, but if it happens to you, count on T.F. O’Brien to help. We employ highly trained technicians who will provide a comprehensive evaluation of your oil furnace. Then, they show you the best oil furnace repair solution to make your home as comfortable and energy-efficient as possible. We use the most advanced diagnostic equipment, instruments and tools available so that we’re able to help you save time and money.
  • Oil Furnace Installation in Nassau County, NY: If your oil furnace isn’t providing you with the comfort you want, and the energy efficiency you require, then you may want to consider a new oil furnace installation from T.F. O’Brien. We’re highly trained experts in the field of home comfort who want to provide you with the best oil furnace products on the market. We offer top-of-the-line oil furnace products from trusted manufacturers – so you can count on your new oil furnace installation to provide you with efficient comfort for many years.
  • Oil Furnace Maintenance in Nassau County, NY: If you want to keep the oil furnace in your Long Island home running in tip-top shape, there’s no better way to do so than with oil furnace maintenance from T.F. O’Brien. We will be happy to fully explain the details of our maintenance programs to you. You’ll discover that we service nearly every make and model of oil furnace ever made. By maintaining your oil furnace, you’ll help it achieve peak performance, which can help you save on future energy bills and repair costs.

At T.F. O’Brien, we complete every job with one goal 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 provides the furnace contractor services you need for your Nassau County, NY home.

tfo areas servedT.F. O’Brien is focused on your needs, and you can count on us to meet the furnace needs of your Nassau County, NY home with expertise. We keep your best interests in mind at all times, and provide exceptional furnace products of the highest quality to ensure expected comfort and safety. All of us at T.F. O’Brien want you to enjoy your experience working with us and to never have to deal with a hassle. We guarantee that you’ll be 100 percent satisfied with the work we do for you, and we never ask you to pay until you are.

We are proud of the furnace contractor services we offer our Nassau County, NY customers. We’re proud of the work we do and the lineup of quality furnaces we provide. The furnaces we install in your home are manufactured to provide you with optimal comfort and efficiency, allowing you to enjoy the highest level of comfort while saving on your utility bills. At T.F. O’Brien, we work hard to make you happy and comfortable, and we’re never satisfied until your completely satisfied with the work we’ve done for you.

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.