Case Study: Large Hospital Building achieves over $60K in energy savings opportunities and enhanced HVAC fault detection with IBM Envizi ESG Suite

Large Hospital Building Over $60k energy cost savings opportunities identified over the first 8 weeks of operation

Large Hospital Building, a 20,000 m2, 12-level inpatient services facility operating 24/7 with a Siemens Apogee BMS, was hit by rising utility rates and lacked transparency into HVAC performance. Time-poor engineering staff were largely reactive and had no systematic way to find faults or cost‑saving opportunities, so the hospital engaged IBM Envizi ESG Suite and its Equipment Fault Detection Module with software metering to proactively diagnose issues.

IBM Envizi ESG Suite was deployed across 98 HVAC items (35 AHUs, 42 fans, 9 pumps, 3 chillers, 6 cooling tower fans, 3 boilers), uncovering problems such as AHUs and carpark fans running unnecessarily, simultaneous heating and cooling, and unstable control loops. In the first eight weeks the platform identified over $60k in energy cost savings opportunities, enabled low‑cost BMS fine‑tuning with no CAPEX, increased engineering-team visibility into faults and optimization, and paved the way to roll the solution out to five more hospitals.