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BMS Reviews

A Building Management System (BMS) is often used to control equipment in large, commercial buildings , (primarily heating, ventilation and air conditioning (HVAC) systems). In many cases, a BMS does a great job at ensuring occupants are comfortable in the building; however hidden issues with energy performance often exist. A BMS Review identifies hidden energy performance issues and provides solutions to improve occupant comfort and decrease energy consumption.

Rigorous and thorough analysis of historical data from each item of equipment the BMS controls is used to identify issues including (but not limited to):

  • Excessive operating hours
  • Fighting between space heating and cooling
  • Excessive use of outside air when not required
  • Insufficient use of outside air when free cooling is available and required
  • Faulty hardware and poorly tuned controls

The following figure shows an example of a “hunting” (rapidly cycling) control system due to poor controller tuning. The supply air temperature (SAT) varies by up to 5 °C in less than 3 minutes, making it uncomfortable for occupants. In addition, the chiller is cycling between very low and very high load. This is energy inefficient and increases wear on the machine. BMS reviews help to diagnose the issue, develop solutions, and fine-tune them over time.


Please feel free to Contact Us to discuss any of your BMS needs.

Enercon (A division of LTH Ltd)
210 Hazeldean Road, Christchurch (Head Office)
Level 10, Grand Annexe, 84 Boulcott Street, Wellington
72 Matenga Road, Ligar Bay, Takaka
Contact us on 03 384 7905 for a free consultation
Or email: office@linetech.co.nz

© 2017 Enercon Energy and Utility Consultants