If you have an area of your home that could benefit from climate control, but ductwork is either impossible or impractical, consider ductless heating and air conditioning from T.F. O'Brien. We’ve been helping Long Islanders stay comfortable for more than 85 years, and we want to help you, too.
Ductless systems deliver the heating and cooling comfort of a traditional system to specific individual spaces in your home – all without the need for additional ductwork. Whether you’re creating a quiet, comfort-controlled home theater room, or simply want to heat or cool and area in your home without ducts, the wide variety of ductless systems give you the efficiency, aesthetics and comfort of a traditional central heating and cooling system. Additionally, a ductless system is also an efficient and quiet alternative to a window air conditioning unit.
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 6/15/23
See how Daikin ductless systems can improve your comfort and save you money
Unlike single speed systems, Daikin ductless inverters offer variable speeds for more efficient home comfort.
Hear the difference in a Daikin ductless system from T.F. O'Brien
Our ductless solutions are engineered to operate under 50 decibels. Comfortably enjoy your home with a Daikin ductless system.
T.F. O'Brien is a full-service ductless contractor. In addition to ductless heating & AC on Long Island, NY we also provide:
When you work with T.F. O'Brien, your comfort always comes first. We believe you’ll be pleased with the variety of ductless heating and cooling services we offer, including:
- Ductless Air Conditioner Contractor
- Ductless AC & Heating Installation
- Ductless Repair & Maintenance
- Ductless System Warranties & Costs
- Ductless Mini Split Repair & Maintenance
- Mini-Split Air Conditioning & Heating
T.F. O'Brien takes pride in providing Long Islanders with the best ductless heating and cooling available. We proudly stand behind our craftsmanship and our quality lineup of ductless products. We’ll strive to make you happy and comfortable, and we’re not satisfied until you are.
At T.F. O'Brien, our focus is on our customers, and we work hard to meet your ductless heating and cooling needs.
We always look out for your best interests and provide exceptional ductless products and services of the highest quality to ensure expected comfort and safety. The T.F. O'Brien team wants you to enjoy your experience working with us and to never have to deal with a hassle. Our guarantee is that you’ll be 100 percent satisfied with the work we do for you – in fact; you won’t pay until you are.When you need a ductless contractor in Long Island, T.F. O'Brien can help. T.F. O'Brien proudly serves all of Long Island, including Nassau County, Suffolk County, and Brooklyn. Just give us a call at 516.488.1800.
Click For Areas We Provide Ductless Services:
We provide Ductless Heating & Air Conditioning on Long Island, including Nassau County, Suffolk County and the following areas:
- Bay Ridge, NY
- Bayside, NY
- Bellerose, NY
- Bensonhurst, NY
- Breezy Point, NY
- Brooklyn, NY
- Brooklyn Heights, NY
- Brookville, NY
- Carroll Gardens, NY
- Commack, NY
- Cold Spring Harbor, NY
- Douglaston, NY
- Dix Hills, 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
- Smithtown, NY
- South Hempstead, NY
- Syosset, NY
- Valley Stream, NY
- West Hempstead, NY
- Westbury, NY
- Whitestone, NY
- Williston Park, NY
- Williamsburg, NY