Emergency A C Repair, Tune Ups & New Installs

Our Management Team


Al D’Andrea

Al bought McCullough Heating & Air Conditioning from Doug & Joy McCullough in 2002 and rapidly became a leader in the HVAC industry. Al holds a Texas A/C license and has served as president of both the state-wide Texas Air Conditioning Contractors Association and the Austin Air Conditioning Contractors Association. Al served the City of Austin as a member of the Zero Energy Homes Task Force and Energy Efficiency Upgrade Task Force and continues to positively influence local HVAC and energy conservation policy. Al holds graduate and undergraduate business degrees from UT Austin and Purdue University. He holds certifications from BPI, NATE, NCI and RESNET covering energy auditing, weatherization, residential systems design, air balancing and more.


Angus Caddock (A.C.) McCullough

The McCullough Man, Angus Caddock (A.C.) McCullough, was born a time ago in Austin to Carney and Kenzy McCullough, both from the wee town of Bonnybridge. E’er since he was a wee lad, The McCullough Man has been interested in all things mechanical, which made him a natural for a career in heating and air conditioning. The McCullough Man is known for his distinctive voice, but he’s rarely seen, tending to stay busy with fixin’ stuff what does stuff. He doesn’t like haggis, preferring instead a nice plate of huevos rancheros. He’s a romantic at heart, too, choosing the Outlander series  over the Highlander more often than not. The McCullough Man’s main passion is to provide his customers with the best home comfort solutions available, and nothing gets his kilt in a twist quicker than shoddy service. So if yer oxters are dreepin’ or the hoose is dreich, keep the heid! The McCullough Man is here and ready help.


Derek “Bull” Ellington

Weatherization Manager
Derek Ellington aka "Bull" joined the McCullough team over five years ago. He has over 20 years of experience in the construction and maintenance industries. As the Weatherization Manager, Bull oversees a team of technicians that focus on energy saving measures, which supports McCullough whole house approach. He continually expands his education on energy saving measures and currently holds certifications as a Building Analyst, Air Balancing, Carbon Monoxide Analyst, Lead, and EPA. Bull enjoys participating in triathalons with the MS150 as one of his favorites to date. When he is not training for triathalons Bull enjoys completing home improvement projects and cooking for his wife and their dog.