BMS Servicing & Optimisation
Improving the way buildings breathe, heat and cool through enhanced controls performance. Engineering-led BMS optimisation.
The Untapped Potential of BMS Systems
Building Management Systems control HVAC equipment, lighting, and building services across commercial estates. Despite this control capability, most BMS systems operate at 40-60% of their potential due to poor commissioning, outdated control strategies, and operational drift.
BMS optimisation systematically improves control performance through advanced programming, sensor calibration, control loop tuning, and implementation of sophisticated strategies (weather compensation, demand reset, optimum start/stop). These improvements reduce energy waste by 10-25% without capital investment in plant or equipment.
Optimisation Scope
Control Loops & Tuning
PID (Proportional-Integral-Derivative) control loops regulate temperature, pressure, and flow across HVAC systems. Poorly tuned loops cause instability, overshoot, and excessive actuator wear. Loop tuning optimises P, I, and D parameters to achieve stable control with minimal energy consumption. Properly tuned loops reduce energy use by 5-15% and improve comfort.
Scheduling & Time Programming
Reviewing occupancy schedules and implementing optimum start/stop algorithms. Optimum start calculates the latest possible plant start time to achieve comfort at occupancy—reducing unnecessary pre-heat/cool periods. Optimum stop shuts down plant early, exploiting thermal inertia. Combined savings typically range from 10-20% of heating/cooling energy.
Trend Logs & Data Analysis
Interrogating BMS historical data to identify operational inefficiencies—simultaneous heating/cooling, excessive runtime, equipment cycling, and setpoint drift. Trend log analysis reveals problems invisible during site inspections. Data-driven optimisation targets the most wasteful systems first, maximising ROI.
Sensor Calibration
Testing and recalibrating temperature, humidity, pressure, and flow sensors. Sensor drift causes control errors—a +2°C temperature sensor error can increase heating energy by 15%. Regular sensor calibration (annually) ensures control accuracy and prevents waste.
Fire Interface Testing
Verifying BMS integration with fire alarm systems. When fire alarms activate, BMS systems must shut down AHUs, close dampers, and activate smoke extract. Testing confirms these interlocks function correctly—critical for life-safety compliance and regulatory requirements under BS 5839 and Building Regulations.
Advanced Control Strategies
Implementing weather compensation (adjusting heating/cooling based on outdoor temperature), demand-controlled ventilation (CO₂-based airflow modulation), and load shedding (reducing non-critical loads during peak demand). Advanced strategies reduce energy by 15-30% compared to fixed setpoint control.
ROI from Optimisation
Energy Savings: 10-25% reduction in HVAC energy consumption. For a typical 10,000m² office building spending £100,000 annually on energy, savings range from £10,000-£25,000/year with 1-3 year payback.
Comfort Improvement: Optimised controls deliver more stable temperatures, fewer hot/cold complaints, and improved IAQ. Comfort improvements reduce tenant complaints and enhance satisfaction.
Maintenance Reduction: Properly tuned controls reduce equipment cycling, extend actuator life, and prevent premature failures. Maintenance savings typically represent 5-10% of energy savings.
Carbon Reduction: Energy savings translate directly to carbon reductions. 20% energy saving = 20% carbon saving. Optimisation supports ESG targets and SECR reporting without capital investment.
BMS Servicing vs Optimisation
BMS Servicing
- • Hardware checks and battery replacement
- • Alarm response and fault rectification
- • Basic setpoint adjustments
- • Maintaining existing functionality
- • Reactive maintenance approach
BMS Optimisation
- • Control strategy improvement
- • Energy savings through tuning
- • Sensor calibration and validation
- • Advanced algorithm implementation
- • Performance improvement approach
Related Services
Request BMS Optimisation
Our controls engineers conduct BMS optimisation for commercial, industrial, and public sector estates. We support all major BMS platforms (Trend, Honeywell, Schneider, Johnson Controls, Siemens) and provide ongoing performance monitoring. Contact us for a site-specific proposal.
Request BMS Optimisation