There’s no need to suffer when the weather outside on Long Island is sweltering – trust T.F. O’Brien to help you cool off with new air conditioning installation. We’re committed to providing the absolute best customer service and expert advice to Long Island residents – we’ve been doing so for more than 85 years!
T.F. O’Brien will always look out for your best interest and provide exceptional, high-quality, new air conditioning installation to ensure expected comfort and safety. Our entire company strives to make sure you enjoy working with us and never have to deal with a hassle. We guarantee that you, the customer, after purchasing our products and/or services will be 100 percent satisfied – in fact, you won’t pay until you are.
At T.F. O’Brien, we’re pleased to provide Long Islanders with what we believe to be some of the best quality, most efficient, new air conditioning products on the market. If you’re looking for a quiet, attractive and energy efficient air conditioning system, T.F. O’Brien is ready to assist you. T.F. O’Brien proudly serves all of Long Island, including Nassau County, Suffolk County, and Brooklyn. Simply call us at 516.209.3925.
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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.
"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


Review scores last updated 11/30/20
T.F. O’Brien is a full-service air conditioning contractor. In addition to new AC installation on Long Island, NY we also provide:
Click For Areas We Provide Air Conditioning Services:
We provide new air conditioning installation on Long Island, including Nassau County, Suffolk County and the following areas:
- Bayside, NY
- Bellerose, NY
- Breezy Point, NY
- Brooklyn, NY
- Brookville, NY
- 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
- Merrick, NY
- Mineola, 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