Furnace Service in Nassau County, NY

Your furnace is one of the most important pieces of equipment in your Nassau County, NY home. You and your family rely on it to keep you warm all winter long, and provide you with energy-efficient heating. One of the best ways you can make sure your furnace will operate at top performance year in and year out is by making sure it’s properly serviced. Furnace service from T.F. O’Brien Cooling & Heating will help you ensure that your system is operating smoothly and efficiently, keeping your family safe and warm now and into the future.

By choosing T.F. O’Brien to help you get the furnace service you need, you’re counting on a company that has helped people all throughout the Nassau County, NY area keep warm since 1934. We believe we’ve been in business for so many years because we always make our customer our top priority. We strive to ensure that our customers get the furnace services they need, and that they’re completely happy with the work we’ve done for them. At T.F. O’Brien Cooling & Heating, we strive to give you the very best furnace services, and we’re not happy until you’re fully satisfied with the work we’ve done for you.

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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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Trust T.F. O’Brien with the furnace service needs of your Nassau County, NY home.

At T.F. O’Brien, your complete comfort is important to us. We’ve been helping people throughout Nassau County, NY with their home comfort needs for more than 80 years. As a full-service furnace contractor, we proudly offer a comprehensive listing of furnace services to meet all of your needs. Aside from furnace service, we’re also 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 Contractor in Nassau County, NY
  • 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.

Count on T.F. O’Brien for furnace service and much more for your Nassau County, NY home.

tfo areas servedT.F. O’Brien Cooling & Heating will provide you with the best furnace services available, completed by our talented, NATE-certified technicians. They receive training throughout the year, and are well qualified to meet all of your furnace needs. They have a comprehensive knowledge of most makes and models of furnaces, and will likely be able to service the furnace in your Nassau County, NY home. Even if you didn’t purchase your furnace from us, chances are we’ll be able to service it for you. We promise your 100 percent satisfaction on any furnace service we provide – you won’t pay us until you’re entirely happy 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.