Heating & Ventilation: Commercial Building Controls Designing or servicing a building control system? B&B Trade has control experts on staff and the products in stock to help you get the job done, pneumatic or electronic. Contact any of our branches in the GTA or across Southwestern Ontario. Suppliers Website Johnson Controls http://www.johnsoncontrols.com/ Honeywell https://buildingsolutions.honeywell.com/Cultures/en-US/ Invensys http://www.invensys.com/%20 Siemens HVAC http://www.sbt.siemens.com/press/hvac_pr9.asp%20 Siemens Building Automation http://www.sbt.siemens.com/BAU/default.asp Belimo http://www.belimo.com/ California Economizer http://www.hvaccomfort.com/