Emergency Service

For Air Conditioning & Heating Emergency Service on Long Island, call (516) 488-1800

Preventive Maintenance Long Island

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. When you need us, we’ll be there – and we guarantee you’ll be satisfied with our work as we take great pride in our qualifications.

Plus (although we love seeing you and all our customers), with proper annual or seasonal maintenance, we can help you to avoid calling us with an emergency situation. Check out the many benefits of a T.F. O’Brien annual maintenance contract.

Call T.F. O’Brien at 516.488.1800 to learn more about service and annual maintenance. Don’t feel like chatting? You can fill out the form below to get a quote. Or, if you have a specific question, you can ask a tech right now.

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Heating Cooling Both 

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