Furnace Contractor in Suffolk County, NY

Do you live in Suffolk County, NY and need furnace maintenance, repair or installation? Then you should count on the professionals at T.F. O’Brien Cooling & Heating to assist you. For more than 80 years, we’ve been helping people all throughout the Suffolk County, NY area with their furnace needs, and we want to assist you as well. You can trust us to provide you with reliable, full-service furnace contractor service.

T.F. O’Brien has been helping people with their furnace needs since 1934 because of one simple reason – we believe in always putting the customer first. People all throughout the Suffolk County, NY area know that when they need a professional, reliable furnace contractor, they can count on T.F. O’Brien. We employ technicians who are at the top of their craft, with great attitudes and work ethics. Their primary focus is meeting the furnace needs of your home expertly and courteously. We work hard to help you keep your home warm and comfortable, no matter what the weather outside may be.

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.

Please briefly describe your HVAC needs:







We won't share your contact info or spam your inbox.

"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

facebook review
70 reviews
Google Star Rating 4.6
291 reviews

T.F. O’Brien wants to be the furnace contractor for your Suffolk County, NY home.

T.F. O’Brien wants you to be completely comfortable in your Suffolk County, NY home. We have been helping people with their furnace needs for more than 80 years because we strive to help people with any and all of their furnace needs. As a full service furnace contractor, we proudly provide a complete listing of furnace services to meet your needs which includes:

  • Gas Furnaces in Suffolk County, NY
  • Gas Furnace Repair in Suffolk 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 Suffolk 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 Suffolk 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 Suffolk 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 Suffolk 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 Suffolk 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 Suffolk 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 Suffolk 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.

All of us at T.F. O’Brien focus on every job we do with one primary goal, which is to provide you with the optimal furnace contractor services for your Suffolk County, NY home. We strive to ensure your complete satisfaction, and no job is ever finished until you’re entirely happy with the work we’ve done for you.

Choose T.F. O’Brien for the furnace contractor needs of your Suffolk County, NY home.

tfo areas servedAt T.F. O’Brien, we’re focused on your needs and you can rely on us to help you with the furnace in your Suffolk County, NY home. We’ll meet your needs expertly and with your best interests in mind. You can trust us to only offer you exceptional furnace products of the highest quality, to ensure the comfort and safety of your family. Everyone at T.F. O’Brien wants you to enjoy working with us, and to never have to contend with a hassle. Our guarantee is that you’ll be completely satisfied with the work we’ve done for you – in fact; you won’t pay until you are.
All of us at T.F. O’Brien focus on every job we do with one primary objective, which is to provide you with the best furnace services available for your Suffolk County, NY home. We strive to ensure your complete satisfaction, and no job is ever finished until you’re entirely happy with the work we’ve done for you.