If your old gas furnace is on its last legs, and you’ve been experiencing lower levels of comfort and higher utility bills, then it’s time for a new gas furnace installation in your Long Island, NY home from T.F. O’Brien. For nearly 80 years, we’ve been in the business of providing Long Islanders with the very best in gas furnace installation, and we want to help you stay comfortable and save on your utility bills, too.
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. We only offer premium gas furnace products from trusted manufacturers – so you can count on your new gas furnace installation to provide you with energy-saving comfort for years to come.
If you’re ready for a new gas furnace installation in your Long Island home, trust T.F. O’Brien to provide you with premium products and optimal service. T.F. O’Brien proudly serves all of Long Island, including Nassau County, Suffolk County, and Brooklyn. Simply call us at 516.488.1800 and we’ll be pleased to assist you.
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.
"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


T.F. O’Brien review scores as of 10/18/22
T.F. O’Brien is a full-service furnace contractor. In addition to gas furnace installation on Long Island, NY we also provide:
T.F. O’Brien is a full-service heating contractor. In addition to gas furnace installation, we also provide:
- Long Island Gas Furnace Repair 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.
- Long Island Gas Furnace Maintenance 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.
- Long Island Gas Furnace Service 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.
- Long Island High-Efficiency Gas Furnaces 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.
Click For Areas We Provide Furnace Services:
We provide gas furnace installation on Long Island, including Nassau County, Suffolk County and the following areas:
- Bayside, NY
- Bellerose, NY
- Breezy Point, NY
- Brooklyn, NY
- Brookville, N Y
- Cold Spring Harbor, NY
- Commack, NY
- Dix Hills, NY
- Douglaston, NY
- East Meadow, NY
- East Williston, NY
- Elmont, NY
- Floral Park, NY
- Flushing, NY
- Fort Salonga, NY
- Franklin Square, NY
- Freeport, NY
- Fresh Meadows, NY
- Garden City, NY
- Glen Cove, NY
- Glen Head, NY
- Great Neck, NY
- Greenlawn, NY
- Hauppauge, NY
- Huntington, NY
- Jericho, NY
- Kings Park, NY
- Long Island, NY
- Lloyd Harbor, NY
- Manhasset, NY
- Melville, NY
- Mineola, NY
- Merrick, NY
- New Hyde Park, NY
- Northport, NY
- Oceanside, NY
- Oyster Bay, NY
- Park Slope, NY
- Plainview, NY
- Port Washington, NY
- Queens, NY
- Queens Village, NY
- Rockaway Point, NY
- Rockville Centre, NY
- Roslyn, NY
- South Hempstead, NY
- Smithtown, NY
- Syosset, NY
- Valley Stream, NY
- West Hempstead, NY
- Westbury, NY
- Whitestone, NY
- Williston Park, NY