Proudly Serving the Wilmington, NC Area Since 1981.


In-Home Evaluation For HVAC Replacement

Time to replace your heating and air system? O’Brien Service Company offers complimentary in-home evaluations. Watch this video to learn what to expect when an O’Brien Design Specialist visits your home and why it’s important.

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Join The Energy Savings Club

Receive Annual Maintenance Plus Other Benefits


“Just as a tune-up for your car can improve your gas mileage, a yearly tune-up of your heating and cooling system can improve efficiency and comfort.”EnergyStar


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Nancy & John J. (Wilmington, 28412)
"Called before he came, greeted our puppy and did a great job! Thank you!"– Nancy and John J. (Wilmington, 28412)
Rose R. (Wilmington, 28405)
"Prompt, professional service, every time. Good job OBrien!" - Rose R. (Wilmington, 28405)
Richard S. (Wilmington, 28409)
"Five words to describe the service: Prompt, efficient, knowledgeable, personable, professional." - Richard S. (Wilmington, 28409)
Jennifer J. (Hampstead, 28443)
"James was an absolute lifesaver! Helped troubleshoot and fix the problem immediately with my emergency call. Very grateful for his professionalism and courteous manner. " - Jennifer J. (Hampstead, 28443)
Paul W. (Castle Hayne, 28429)
"Josh and Zack from Obrien Service Co came to my home to repair my HVAC and were very professional and knowledgeable. They wore face covering from the time they got out of the truck and were a pleasure to do business with. Obrien Service should be proud to employ these guys, I would definitely use Obrien again. " - Paul W. (Castle Hayne, 28429)
Melody F. (Leland, 28451)
"We could not be happier with the service we have received from OBrien Service Company. Their service people are knowledgeable and courteous and show up on time. They always answer the phone and schedule an appointment promptly. We are satisfied customers!" – Melody F. (Leland, 28451)
Sam R. (Wilmington, 28401)
"I called Obrien Service last Friday and had an appointment for 0800 Monday morning to install the IWAVE product. Our technician, Aaron was courteous, timely, instructive, attentive and made me feel like family. I asked for service contract for annual maintenance on our HVAC system. All good. I asked for a call from a commercial professional at Obrien for a consultation for our church. Dwight called later that day and we met today. Total professional. Great experience. Highly recommended. Five star every day." – Sam R. (Wilmington, 28401)
Gary E. (Wilmington, 28409)
"My family have been clients for many years, and we highly recommend Matt C. and the entire company." – Gary E. (Wilmington, 28409)


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Air Conditioning Repair in Wilmington NC

Needing a repair on your heating and air system is no way to start the Spring and Summer months! A refrigerant leak or a clogged drain line are two

What Is Aux and Emergency Heat?

The weather here in Wilmington, NC can drop to below-freezing temperatures. When this happens, your heat pump and air handler have a back-up function

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