• slide-image1

  • slide-image2

  • slide-image3

  • slide-image4

  • slide-image5

  • slide-image6

  • slide-image7

  • slide-image8

hvac-control lighting-controlsecurity-control


"We don't have a proprietary bone in our body"

That's because we're all about being open: from what we sell to the way we support our customers. Our name is our philosophy. We offer only open protocol building controls and security to bring you the right solutions-the first time.

We teach customers whatever they want to know, empowering them to easily maintain their systems. If they want to buy, we'll sell. If they want to learn we'll teach.
Customers choose OpenTech because we're designed from the ground up to be the ideal business partner.

24 Hour Emergency Service

San Antonio:210-633-0400
Rio Grande Valley: 956-618-0400
Coastal Bend:361-854-0400