Trusted Heating & Cooling Services in Austin, TX Since 1977

100% Satisfaction Guaranteed
STILL Locally Owned and Operated

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We Live Here, We Give Here! Special financing for up to 6 years. Subject to credit approval.
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Experience the McCullough Difference

More Than a Service Call—Comfort You Can Count On
  • Trusted Service Since 1977
  • Expert Installation & Quality Repairs
  • Flexible Financing & Satisfaction Guarantee
  • Reliable, Local, Transparent Service
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Expires: 2/28/2026

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WHAT YOUR NEIGHBORS ARE SAYING ABOUT US

13 hours ago
Sean Yeh
After the mild winter storm of 2026, Peter and Eric helped me out with diagnosing what went wrong with my HVAC system. They were both able to come out quickly to help me and were very knowledgeable. Eric helped me made sure I put my new air filter correctly while Peter shared all about how my HVAC system works. Peter succinctly explained what type of HVAC system I have, gave fun facts such as because my system was in an insulated attic, he knew my system was electric and not gas. While explaining the replacement process, Peter was friendly and did not push for me to buy a new system and explained all the pros and cons of each to help me make an informed decision. I had a great experience with McCullough.
20 hours ago
Samuel Wright
Jaiden came by right on time and was very thorough looking over my system. He was straight forward and gave me a good run down on the health of my AC system with recommendations.
22 hours ago
Leslie Parke
Because I bought my home unit from them a few years ago, I recently had them install a minisplit for my re-vamped shed. Evan was great, very responsive and great communication! I continue to be a fan of McCullough 🙂
2 days ago
HS E
Craig was super responsive and very helpful in getting my system repaired. Refreshing!
2 days ago
Leonard Person
It's Ground Hog Day, they only know how to nail the job.. .again!?
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