New Air Conditioning Installation on Long Island, NY

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 516.488.1800.

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 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 air conditioning on Long Island, including Nassau County, Suffolk County and the following areas:

From the first phone call to inquire about the service to the team leaving the completed job, everyone walked me through the process to set my expectations. It was my first experience working with a service company that treats you like family. I will continue to use them for maintenance services and highly recommend them to anyone looking for heating and cooling services.

J.R. - Franklin Square, NY