Exceptional Heating and Air Conditioning Service For the Acorn Ponds Community

Acorn Ponds Community Offer

Save $50.00

For any heating or AC repair, or
seasonal tune-up.
All makes and models.

New customer offer. Limit one discount
per location. Expires 6/31/21

Serving Long Island Communities Since 1934.

As an Acorn Ponds resident, you may have seen our trucks in the area. We’re proud to be one of the largest and most trusted area heating and AC contractors and we’d love to help you when you next have a need. Please use this discount with our compliments – we’d be honored to earn your business and call you a customer too.

We also offer emergency service, seven days a week including holidays.

T.F. O’Brien & Co is proud to provide exceptional maintenance and repair services, including emergency service, for residential and commercial customers in Nassau and Suffolk Counties. Get your system back up and running, promptly and professionally.

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Shamrock New System Savings

carrier HVAC systems

If you are in need of a new heating or air conditioning system right now, through 3/17/2021, we have access to manufacturer incentives and discounts available which can save you up to $4,275* on select systems. Let us know right away if you’d like more information.

* Ask us for details about the different financing options available with credit approval. Restrictions may apply. Total savings shown: $625 MERV Air Cleaner, 12-year warranty, $350 Wi-Fi Thermostat, and $3,300 manufacturer and utility rebate available on select systems. Ask dealer for details. Offer Expires 3/17/21.

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.

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    "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

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    85+ years of service

    To Your Success


    Five Stars

    1,767 reviews



    Five Stars

    1,183 reviews

    T.F. O’Brien review scores as of 4/12/24

    The T.F. O’Brien Difference

    When you choose T.F. O’Brien Cooling & Heating for your heating and air conditioning needs, you’re choosing a company trusted to help people stay comfortable throughout the Long Island, NY area for 80 years. Our technicians are trained and NATE certified, and we consider them master craftsmen in the field of home comfort. They will provide a comprehensive evaluation of your air conditioning repair needs and find the solution that will make your home as comfortable and energy efficient as possible.

    At T.F. O’Brien our entire team is committed to your complete satisfaction and we want your experience to be exceptional too. We promise

    • Attention to detail
    • Courtesy
    • Excellence
    • Integrity
    • Honesty & Transparency
    • Energy-efficient products

    T.F. O'Brien HVAC service area on long island

    It’s team commitment

    We strive to be different from other companies – different in how we treat our customers, how we treat our team members, and in the results we achieve.

    T.F. O'Brien HVAC team

    It’s a commitment to quality that dates back to 1934, when Thomas Francis O’Brien founded the company. He believed that have to do your best work every day, and treat your customers the way you’d want to be treated. Those are standards we still live by at T. F. O’Brien today. We’re proud that so many customers trust us with their home comfort, and we’re grateful for the opportunity to serve you.