To cut commercial building energy costs, target HVAC first: it is 40-60% of the load. Optimise HVAC scheduling, add demand-controlled ventilation (10-20% savings), fit variable speed drives (30-50% on fans and pumps), upgrade to LED with smart controls, and sub-meter by system.
Why does HVAC scheduling matter most?
Heating and cooling are 40-60% of a commercial building's energy use. Implement:
- Occupancy-based scheduling to reduce runtime during unoccupied hours
- Pre-conditioning strategies to minimize peak demand charges
- Night setback and morning warm-up optimization
What is demand-controlled ventilation and what does it save?
Demand-controlled ventilation (DCV) uses CO2 sensors to adjust ventilation rates to actual occupancy, reducing unnecessary outdoor air intake and the energy needed to condition it. Typical savings: 10-20% on HVAC energy.
Do variable speed drives cut energy use?
Yes. Retrofit constant-speed fans and pumps with variable speed drives (VSDs) to match output to actual demand. VSDs can cut fan and pump energy consumption by 30-50%.
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How do LED lighting and smart controls reduce costs?
Replace outdated lighting with LED fixtures integrated into your BMS. Add:
- Daylight harvesting to dim lights near windows
- Occupancy sensors to turn off lights in unused spaces
- Task tuning to provide appropriate light levels for each area
Why is energy monitoring essential?
Install sub-meters to track energy use by system or zone. Use BMS analytics to identify inefficiencies and benchmark performance over time.
Want to reduce your building's energy costs? Contact Alpha Controls for a comprehensive energy audit and BMS optimization plan.
Alpha Controls Team
Specialist BMS installation, commissioning, and maintenance across London and the South East. SafeContractor Approved, BCIA Member.
