DDC (direct digital controls) and BAS (building automation systems) are systems which are used to control the environment inside a building.  The DDC system is generally referring to the control system for the HVAC (heating, ventilating, and air conditioning) systems.  The BAS system is generally referring to DDC plus any other systems which may being monitored and or controlled via the same network.  This may or may not include lighting, building access, fire alarm system, energy power monitoring, security, automatic signage and other systems.


We would recommend the following sites for your general information.


For an unbiased look at most of the different DDC systems currently on the market, visit www.ddc-online.org


For good information concerning current products and trends in the DDC/BAS business, visit www.automatedbuildings.com

Our Industry

Class 1 Controls, Inc.

1720 Elmview

Houston, TX 77080

To contact us:

Phone: (713) 467-8397

Fax: (713) 467-8398

E-mail us

“We are in business to provide professional services and high quality products to make critical environments function properly. Critical environments are those which must be maintained to a high degree of accuracy, reliability and safety.  We intend to be a leader in the area of control systems integration and to provide a high quality product, superior service and expertise to our customers at a fair price. We intend to operate our business with integrity, honesty, hard work and commitment to doing what is right.”