HVAC Maintenance in the Greater Austin Area
Stay comfortable year-round with expert HVAC maintenance in the Greater Austin Area. McCullough Heating & Air Conditioning has served Central Texas homes since 1977 with transparent pricing and neighborly care. We bring a 4.8 rating from 3,091 reviews and local know-how to every tune-up. Serving Greater Austin, including Austin, Round Rock, and Cedar Park. Schedule your maintenance before summer heat or cooler fall nights to prevent breakdowns and lower energy costs. Call or book online today.
Each image is a real worksite photo, reflecting the quality and dedication in every project.
Why Choose Us
What Our Customers Say
"Quick, efficient, honest, and a great maintenance contract."
"It is well worth the $16.95 a month."
"Their technicians are friendly, polite and communicative."
Answers to Common Questions
View All FAQsWhat Is Included in a Typical AC Tune Up Service?
A typical AC tune-up includes a full system inspection, cleaning, testing, and adjustments to restore safe, efficient cooling. Most visits focus on removing coil grime and correcting airflow or electrical issues that build up from dust and vibration. In our Central Texas service area near Georgetown, heavy pollen and attic heat make coil care and airflow checks especially worthwhile. A tech insight we see often: an evaporator coil can look clean from the front—its backside fins hide the real clog, so we open panels to inspect the whole surface.
What’s usually performed:
- Full system inspection and performance testing
- Cleaning of outdoor condenser and indoor evaporator coils and key components
- Refrigerant level check and refill if needed
- Electrical tightening plus safety and control checks
- Lubrication of moving parts
- Airflow verification and thermostat calibration
- Blower motor inspection/cleaning
- Filter replacement guidance or change
- On-the-spot repairs if a failing part is found
Schedule maintenance before summer to reduce breakdown risk and confirm final needs after an on-site check. <br/> Updated: 2026-05-03 <br/> Need help in Georgetown, TX? Call (512) 588-5937 or book online. “Very thorough maintenance inspection along with explaining in detail functionality of system.” — James G.
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Where We Work
What areas do you serve for hvac maintenance?
We serve the Greater Austin Area, including Austin, Round Rock, and Cedar Park. See the full list of communities we cover below for quick scheduling near you.







