Proudly Serving the Wilmington, NC Area Since 1981.

hvac repair company wilmington nc o'brien service companyWe're Hiring! Work With A Growing CompanyNow Hiring: Service Techs, Install Techs, and Office PersonnelApply Now!



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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“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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AC Repair Wilmington, NC 28411
“The technician was very knowledgeable and figured out why my A/C was not working. It seems a squirrel had decided to enjoy chewing the wiring in my unit. The squirrel made a nest inside. The technician was able to fix the wiring and got the unit running. The technician was very friendly and a pleasure to talk to.” – Pat S.
HVAC Replacement Wilmington, NC 28409
“Always professional, knowledgeable, courteous, and timely! We’ve been using their services for 16 years and always very satisfied and happy with it.” – Janet G.
HVAC Replacement Wilmington, NC 28403
“O’Brien was able to address my issues promptly when my previous system failed. I was given options and each was fairly explained and prices were quoted. I felt no pressure to choose one over the other. Work was completed in a timely manner. My home was pristine when they left. The system is working superbly and the new thermostat gives us easy-to-use options. All technicians were vaccinated. Thank you!” – Karen J.
HVAC Replacement Wilmington, NC 28411
“Our HVAC unit stopped working so we called O’Brien. Tom came out to talk through different units and pricing. He was extremely knowledgeable and was able to answer all our questions. We were lucky enough to have an install within a week. The installers were extremely friendly and professional. At the end of the install, they walked us through the new thermostat and made sure we were comfortable with no further questions. I highly recommend O’Brien to anyone in the market for an HVAC system. This company is A++. I simply cannot say enough about our seamless experience!” – Kimberly V.
HVAC Replacement Wilmington, NC 28412
“O’Brian salesman, Tom, provided a complete and competitive quote to replace our older HVAC system. The installation crew showed up at the time they said they would and the installation went very well. Everything was cleaned up afterward as if they hadn’t been there. O’Brian provided complete documentation of the new system and followed up a week after the install, making sure all was well. So far they would have my recommendation for this kind of work.” – Paul B.
HVAC Maintenance Wilmington, NC 28411
HVAC Maintenance Carolina Beach, NC 28428
“Great bunch of people. Very satisfied as always.” – Steve N.
AC Repair Leland, NC 28451
“The technician was able to validate concerns with the A/C system and provided recommendations on how to fix the problem. I am very pleased with the technician’s professionalism and knowledge of system and how to maintain the units.” – Ardouin B.
AC Repair Wilmington, NC 28405
“We were so relieved to have our A/C repaired so quickly! He got here at the time promised, diagnosed the issues with our capacitor, and got it replaced and working that afternoon. Thank you!!” – Sunny S.
HVAC Maintenance Wilmington, NC 28409
“Kevin was EXCELLENT and appreciate his review of our system and for fixing the electrical wiring problems. I highly recommend O’Brien.” – Barbara G.
AC Repair Wilmington, NC
“Very prompt after-hours service. Very courteous technician.” – Gene and Gladys M.
HVAC Maintenance Leland, NC 28451
“Kevin is so knowledgeable and takes the time to explain everything to us in a way that is understandable. We feel so comfortable having him in our home. He is the real deal when it comes to actually caring about the customer and making sure they get top-notch service. We really appreciate him!” – S. F.


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Ductless Mini Split

The Ductless Mini Split is one of the many popular, energy-efficient heating and air conditioning products O'Brien Service Company offers. Just like

Enter To Win A 2022 Attractions Book!

Enter to Win A 2022 Attractions Book In the form below, enter your Energy Savings Club account information, and let us know your favorite O'Brien

AC Not Working After Power Outage

Here in Wilmington NC, we can experience a fluctuation in weather. From sunny, 75 degree weather to a tumultuous downpour. The coastal weather can get