Case study
Industry: General manufacturing · Region: Carolinas · Services: Energy Audits · Ventilation
Challenge
Rising utility spend with no clear tie between interval data, constant-volume exhaust, and makeup air systems. Leadership needed ranked retrofits without halting production.
Approach
ASHRAE-aligned facility energy audit mapped utility spend to ventilation and process loads. Ranked ECMs by ROI, implementation risk, and uptime constraints.
Results
22% of annual utility spend tied to constant-volume exhaust and makeup air; 12% verified energy reduction within one operating season. Phased retrofit plan with zero extended shutdowns. Related demand-charge analysis identified $180K/year in addressable waste.
Results vary by facility, baseline, and scope. SIEC documents assumptions and measurement approach for every engagement.
Stephen M. Smith, PE — Principal Engineer, SIEC