Trusted Heating & Cooling Services in Austin, TX Since 1977

100% Satisfaction Guaranteed
Locally Owned and Operated

Our Services

Financing options available

We Live Here, We Give Here! 0% financing for up to 6 years
View Financing

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
Book Now

Don’t Miss Today’s Offers

New Carrier AC & Heating system
as low as $72/month-$2.40 a day-Up to $450 Cash Back
+ Potential Federal Tax Credits
Book Now

Expires: 3/31/2025

View All Offers
Contact Us

Quality Service Recognition by Leading Organizations

Proudly Serving Austin and the Surrounding Areas

View All Service Areas

Join our maintenance plan

Ensure Your Equipment is running smoothly Year-Round
See Our Maintenance Plans

WHAT YOUR NEIGHBORS ARE SAYING ABOUT US

3 days ago
Amy Bannerman
McCullough was able to schedule my AC "second opinion" appointment for the morning after I called. Shawn showed up to my rental property promptly, did his inspection and called me twice to discuss his findings and his recommendations. I appreciated his courteous, professional advice, and will call McCullough again if I have a similar AC issue.
3 days ago
Nanou Knisely
McCullough came responded quickly, came out to assess my H-VAC system, gave me a quote on each component separately. Sent a contract via email, scheduled the rapair quickly and came to do the work when they said they would. Responsive business.
4 days ago
Caroline O'Donnell
Motor failed on electric HVAC system, called into MCCullough and was able to schedule an appointment for the next day. Desmond arrived after 30 minute notification, professional and very knowledgeable he verified problem, provided short time fix while we waited for part to arrive and rescheduled repair for following Monday. Again Desmond was very courteous and professional, changed out motor and checked system to make sure everything was in working order. As a still privately owned HVAC company in Austin wouldn’t hesitate to have McCullough to do yearly checks and repairs. Thank you.
4 days ago
Renee
Very nice, fast & efficient!
5 days ago
Ramon Alvarez
Mitchell was so professional, and patient to address questions about our new system. Very clear and thorough explanations to me and my partner. Made programming adjustments to reduce winter heating bill and gave easy-to-follow advice on keeping the system in top shape.
    View All Reviews