In the last two columns, I explored BAS integration to factory-mounted controls and controls additions to existing BAS. This month, I will cover the last major reason for considering integration: upgrading old BAS.
Why? Old BAS don’t fail in totality; instead, partial system failures typically become more frequent and/or more challenging to resolve. Also, many components such as sensors, wiring/conduit, and even some controllers may still be usable. So, while a total and all-at-once system replacement may sound like a good idea, financial considerations may dictate otherwise. Therefore, it makes sense to consider a phased approach to the upgrade and/or an upgrade that retains some of the existing controllers. So upgrading an old BAS often involves integration to a new BAS.