When you need repair or maintenance for your ductless heating and cooling system, turn to the experts at T.F. O’Brien. For close to 80 years, T.F. O’Brien has been providing Nassau County residents with expert repair, service and installation, and we want to help you with your ductless needs, too.
When you choose T.F. O’Brien to perform repair or maintenance on your ductless system, you’re choosing professionals the field of home comfort. We’re qualified to fully inspect, maintain and repair your ductless system, regardless of the make or model, and it is always our goal that you and your family are comfortable. That’s why it’s our guarantee that you’re 100 percent satisfied – and you won’t pay until you are.
When you need ductless maintenance or repair in your Nassau County home, you can count on T.F. O’Brien for courteous, professional service. Simply call us at 516.488.1800 and we’ll be pleased to assist you.
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 7/15/21
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.