AC Not Working?
Upgrade Your HVAC System Today!
Enjoy amazing rebates, discounts and financing
Time is Running Out!
Prices Will Increase September 30th!
... get on our schedule now to get a no-obligation quote!

Fall Inventory Clearance**
Call to schedule an appointment and take advantage of our lowest prices of the year!
If your AC system is struggling, find out just how affordable it can be to install a new high-efficiency Carrier system.
Now is the best time to replace your old central air conditioner. It's our slow season, so take advantage of incredible off-season discounts, financing, rebates, and special offers.
Don't miss out – schedule your FREE, no obligation quote today! Our experienced Comfort Consultants are available Mondays through Saturdays, days and evenings. When you work with McCullough, you can get :
Find out how affordable it can be to proactively replace your AC system now.

(*) With approved credit. Financing subject to change at any time without notice.
**Offer applies to select systems until November 15th and while supplies last. Offer subject to change without notice at any time. Call for details.
Heating Repair, A/C Repair, New Installation & Maintenance
Let’s get your home back to “ahhhh”, as soon as possible.
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Rebates + Discounts +
0% Financing* -
No Sneaky Upgrades or Hidden Fees
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Free Replacement Estimate
& 2nd Opinions -
Austin Energy Home Performance Audit
$25 COUPON
Signup for our mailing list to receive $25 OFF any heating or cooling repair. No other discounts apply. Not valid on prior estimates. Limit 1 per customer.
*WAC = With Approved Credit. Some restrictions may apply.
Heating Repair, A/C Repair, New Installation & Maintenance
Let’s get your home back to “ahhhh”, as soon as possible.
$25 COUPON
Signup for our mailing list to receive $25 OFF any heating or cooling repair. No other discounts apply. Not valid on prior estimates. Limit 1 per customer.
*WAC = With Approved Credit. Some restrictions may apply.
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Austin A/C Services & Heating Repair
At McCullough, our skilled team can meet your needs, no matter how complex the issue. We will explain all of your repair and replacement options so you can make an informed decision. No sneaky upsells or gimmicks, just honest advice and service.
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Great Technical Skill
Pinpointing heating or cooling system problems and properly fixing them takes skill and knowledge of not only the mechanical systems but also an understanding of HVAC airflow (volume, velocity, and area) and thermodynamics.
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Security & Peace-of-mind
Ensure your HVAC system is running efficiently and smoothly with our seasonal preventative maintenance inspection service - McCullough Comfort Club.
Latest Videos & Articles
5 Reasons Your AC System is Underperforming
Things to Check Before You Call for AC Service
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My Air Ducts?
Filters - Clearing Up the Confusion

The Difference Between Low and High Efficiency Air Conditioning

Efficiency Ratings for Heat Pumps

How to spot furnace problems this winter

5 Ways to Fix Uneven Heating in Your Home

CO poisoning and why HVAC maintenance matters

Maintain Your Heating System to Stay Safe and Save

8 Furnace Warning Signs
Quality Service
Our professional staff will respect your time and home by focusing on delivering superior service without cutting corners. Serving the Greater Austin area since 1977, we can repair every major brand of HVAC. Let our experience work for you.
Service area: We service all or parts of:
Austin, Round Rock, Cedar Park, Pflugerville, Lost Creek, Rollingwood, Leander, Steiner Ranch, River Place, Jester Estates, Tarrytown, Great Hills, Balcones, Andersonmill, Westlake Hills, and Georgetown.
If you don’t see your location or have a question,
please call us at (512) 280-0011.
78701, 78702, 78703, 78704, 78705, 78717, 78719, 78721, 78722, 78723, 78724, 78725, 78726, 78727, 78728, 78729, 78730, 78731, 78732, 78733, 78734, 78735, 78736, 78737, 78738, 78739, 78741, 78742, 78744, 78745, 78746, 78747, 78748, 78749, 78750, 78751, 78752, 78753, 78754, 78756, 78757, 78758, 78759, 78613, 78617, 78619, 78620, 78628, 78634, 78641, 78660, 78664, 78681
*WAC = With Approved Credit. Some restrictions may apply. Financing available through Velocity Credit Union and Austin Energy.
COOLING & HEATING SERVICES:
- Air Conditioning System Repair
- AC System Replacement
- Mitsubishi Ductless Air Conditioners
- Scheduled Maintenance
- Furnace / Heat Pump Repair
- Free Energy Audit
- HVAC Performance Check-up
- Duct Sealing & Repair
- Insulation & Weatherproofing
- 24 x 7 Emergency Repair Service
- Free 2nd Opinion on Repair or Replacement
- Austin Energy Home Performance

BBB

Austin Energy Green Building

Energystar

ACCA

Nate

Angies 5 x

NCI

Mitsubishi

Presidents award