This month, I am continuing my recent exploration of situations where building systems do not pass their commissioning functional performance tests at the end of construction.

Last month’s column (February 2015) addressed the potential situation where the design engineers specify a change to a system which has already passed its commissioning functional performance test.

The commissioning process is intended to follow a logical flow in a logical project delivery process.

Last month, I touched on the impact of changing key personnel on a commissioning team.

I will close out 2014 with this final column about how to avoid excessively long commissioning action lists (CALs).

This month’s column is a continuation of my September and October columns regarding excessively long commissioning action lists (CALs).

Last month, this column introduced the concept of an “excessively long” commissioning action list (CAL).

I am a strong proponent of planning ahead for successful functional performance testing.

Proper air and water balancing is critical to HVAC system performance.