Energy Efficiency

Energy efficiency in an existing commercial building starts with understanding how the system is actually operating. This category focuses on practical BAS and HVAC checks that can reveal avoidable runtime, unstable control, simultaneous heating and cooling, poor setpoint coordination, and equipment operating outside the intended schedule.

The articles connect energy performance with maintainability and occupant comfort. Topics include trend review, scheduling, reset strategies, economizer operation, pump and fan control, sensor accuracy, chiller-plant sequencing, and verification after control changes. Recommendations are framed as investigation paths rather than universal savings claims because every building has different loads, sequences, equipment limitations, utility rates, and operating priorities.

Use these guides to identify where data should be collected, establish a defensible baseline, separate control problems from mechanical limitations, and develop better questions before approving upgrades. Changes that affect safety, ventilation, pressurization, freeze protection, equipment warranties, or code requirements should be reviewed by qualified personnel and tested against the approved sequence of operation. Measurable improvement requires trending and verification—not assumptions based only on the BAS graphic.