Name: T. F O'Brien
Address: 100 Denton Ave, New Hyde Park, New York, 11040
Telephone: 516) 488-1800
Price range: $$$

If you have a room or space that needs additional heat or air conditioner, but can’t install a traditional HVAC system, you should look into ductless mini-split systems. T.F. O’Brien Cooling & Heating installs ductless heating and cooling systems in Nassau County and surrounding areas.

Ductless mini-split systems are increasingly popular in Nassau County, NY, offering a flexible solution for heating and cooling without the need for extensive ductwork. This makes them ideal for homes where traditional duct systems aren’t a feasible option. In Nassau County, their versatility is particularly valuable for supplementing existing central air systems, providing targeted comfort in any additions, or efficiently climate-controlling spaces like converted garages or home offices. Given this region’s diverse seasonal weather, ranging from hot, humid summers to cold winters, ductless mini-splits offer efficient, year-round comfort. Their popularity around the world is because of their reliability and suitability for similar climate demands that we seen here in Nassau County.

Ductless mini split systems will give you the efficiency, aesthetics and comfort that will fit your situation. Now you can replace that unsightly window air conditioner with something that will give you hot and cool air for a room or section of your home.

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

4.8

1,538 reviews

4.7

63 reviews

T.F. O’Brien review scores as of 3/13/25

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 offers ductless Heating & Air Conditioning products and services for your Nassau County home

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 to residents of Nassau County, including:

T.F. O’Brien is pleased to provide Nassau County residents with the best ductless heating and cooling available. We pride ourselves in our craftsmanship and quality lineup of ductless products. We’ll strive to make you happy and comfortable, and we’re not satisfied until you are.

T.F. O’Brien wants to be your Nassau County ductless mini split contractor.

We always look 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 never have to deal with a hassle. Our guarantee is that you’ll be 100% satisfied with the work we do for you – in fact, you won’t pay until you are.

When you need a ductless contractor in Nassau County, T.F. O’Brien can help. Just call 516.488.1800.