​© Copyright 2019

Our Company


Established in 1978.

Proudly serving southern California for over 40 years!


All Temperatures Controlled, Inc. is a mechanical contracting firm, located in the San Fernando Valley, that has been serving southern California for over 40 years. Fully licensed, bonded, and insured with a strong reputation and track record. ATC offers both commercial and residential services and is capable of maintenance, service, new construction, design & build, retrofit, and more. From single-room units to hospitals and malls, ATC is here for you!

Founded by George Mego, All Temperatures Controlled has prided itself in providing fast and excellent service to clients throughout the entire southern California region. Over 40 years later and ATC continues to pride itself on the quality of service and fast, honest communication it provides to its many clients. 

Still family owned and operated, ATC is happy to bring to its customers and projects the same level of professionalism, honesty, and diligence that it has done for so many years.