Trusted Heating & Cooling Services in Austin, TX Since 1977

My AC wouldn’t run due to a short somewhere in the system. Shawn did a great job finding and fixing the short in a couple of hours, as well as testing my system to make sure everything else looked good!

Sean — Was very knowledgeable technician. Keep us informed & very prompt service and friendly staff. Everyone at McCullough is great. We have 17 rentals in Austin and they take care of them all!

McCullough has handled our Heating & AC maintenance for a number of years. Their technicians are well trained, respectful of property, and very knowledgeable. McCollough also recently replaced one of our units and did a great job! I appreciated that they used an outstanding quality control inspector to verify that the job was done right. I couldn't give a higher recommendation.

We hired McCullough to install a new AC and weatherize several years ago and we also have them perform regular maintenance checks on our system. They are knowledgeable, dependable and honest. Josh was our most recent technician and he was very professional, careful and friendly. Josh and this company are a pleasure to work with. We highly recommend them.

Fantastic service. The tech that showed up (Joey), was on time, professional, and personable. He fixed our problem and presented options concerning our system. He was very knowledgeable and shared that knowledge with me. Great tech! Install team arrived on Friday for replacement of A coil in unit in the attic. Ricardo and Adrian did great job. Another problem arose with compressor. It had gone out. Joey came back and replaced the outside unit, making sure my wife and I had cool air for the weekend. He stayed until he was sure everything was operating correctly. We were pleased with the great service! 9/18, Joey came back to check levels from work done last week and recommend added fixes to get the system to peak performance. He provided estimate of costs and what these improvements would actually do. As always, it was a pleasure dealing with him. Henry came by to perform spring service on Thursday 5/1/25. Very courteous and thorough. He advised of issues with A/C system, and made arrangements to return to install another intake and clean motor. Very good technician, listed all performance checks and was a pleasure to deal with. 5/8/25 Henry & Dylan returned to perform work. They were efficient, on time, performed the job in an excellent manner. Great job!