Trusted Heating & Cooling Services in Austin, TX Since 1977

Super impressed with this whole team. They were extremely thorough during the initial service call, checking my indoor unit, the AC unit outside, and ductwork. They showed me photos and explained exactly what the problem was, what caused it, and answered all my questions. I felt like they were honest about what was needed and gave a competitive price. I ended up needing to replace my ductwork and they were great from start to finish. They sent someone out to measure and make sure I got an accurate quote. The team that did the ducting was on time, respectful, and cleaned up after themselves. And, my AC is working great now! Thanks McCullough for making something stressful much easier on me.

McCullough did a great job with the installation and went above and beyond in working with our schedule. They showed & talked us through all the information we needed to know about our new A/C and HVAC systems.

I'm really happy to write a very positive review for Kyle Stirling, who provided my first seasonal a/c checkup last week since purchasing a new a/c and heater from McCullough last December. Kyle was not the technician who had been scheduled to do the checkup but, when that person was delayed by a much-longer-than anticipated appointment earlier in the day, Kyle stepped in in his place. I am so glad he did. He was so thorough in his inspection! When Kyle spent more time outside than I've ever experienced inspecting /testing the equipment, I asked him if all was okay, and he explained that my a/c had been installed on a cool day in early December 2025 and he wanted to make sure the equipment was calibrated as it should be (my layman understanding of what he said). Kyle, thank you so much for your expertise, professional/kind demeanor and thorough first seasonal inspection of my new a/c with McCullough!

Professional and punctual. Very thorough and a nice respectful technician.

Technician was prompt, knowledgeable, friendly and fast. Very satisfied.