Controls - Engineering Basics HVAC Controls Engineering BasicsA new HVAC Controls Job require some engineering and drafting. Engineering is required to for controller selection, panel building and figuring cost of the overall job. It is important that controllers have the correct amount of points to handle job and all controllers are of the proper type - bacNet, Lon base etc. This is when all such items are check and tested at the HVAC Controls Engineering Level. The app will give you some basic understanding of HVAC Controls Engineering.