Heating, Air Conditioning & Indoor Air Quality for the greater Los Angeles area.

In 1978 we selected the name All Temperatures Controlled to describe the business we wanted to create. Our goal was to provide the technical knowledge and skill sets needed to handle any residential or commercial HVAC requirement. To provide ideal indoor comfort control for any unique situation.

Now, 33 years later, that goal has become a reality. Based in Chatsworth, All Temperatures Controlled (ATC) is the leading residential and commercial HVAC contractor for the greater Los Angeles area. Our extensive experience and commitment to the highest quality standards has our customers telling everyone about us. In fact, that is probably what brought you to our site.

Call us today at (818) 882-1478 to receive expert opinions on indoor comfort control options for your home or facility. We look forward to serving you, and enhancing the levels of your indoor comfort control.