Prolonged heatwaves can significantly increase energy demand, placing considerable pressure on building operations. Balancing resident expectations and energy performance with service quality is crucial. This article examines practical strategies that enable management to operate efficiently while minimising costs during high-temperature periods. 

Key operational challenges during the summer 

As outdoor temperatures rise, so do the expectations on cooling systems. Central air-conditioning, ventilation systems, and cooling towers often run at full capacity to maintain comfort levels resulting in elevated energy consumption. This increases operating expenses and can also put critical systems at risk of overload, potentially compromising safety and service reliability. 

Common challenges include: 

• Escalating utility bills as costs spike by 20–40% during peak months and are amplified by the EVN rate adjustment effective from 10 May 2025. 

• An increase in wear and tear on mechanical HVAC equipment carries a higher risk of system failures without timely maintenance. 

• Occupant discomfort and complaints, particularly where aggressive energy-cutting strategies affect living quarters comfort. 

Overcoming these issues demands energy-efficient solutions that balance system performance with occupant well-being.  

Read more: What are the Highest Cost Factors for Building Operations? 

7 Practical solutions to improve energy performance 

1.Precisecontrol of HVAC systems

• Maintain zone temperature: A standard 27–28°C in circulation areas and 25–26°C in high-usage or occupied zones. 

• Apply real-time smart controls with environmental sensors, occupancy tracking, and time-of-day reports. 

• Move to predictive maintenance models through BMS insights, extending equipment life and minimising inefficiencies. 

• Track key metrics, such as the Coefficient of Performance (COP) for chillers, and compare them against baseline efficiency targets.

2.Maximise passive cooling and daylighting

• Design for cross ventilation through operable windows, air wells, and louvred vents in stairwells and corridors. 

• Install automatic lighting timers that adjust based on natural daylight hours, particularly in lobbies, waiting areas, and external corridors. 

• Lead with thermal comfort finishes, including high-reflectance surfaces, insulated glazing, and UV-resistant window films.

3.Retrofit with high-efficiency technology

• Replace legacy equipment with inverter-driven systems and appliances carrying the Viet Nam Energy Label (Grade 5). 

• Deploy occupancy-based lighting with motion and daylight sensors in low-traffic areas. 

• Install variable-frequency drives (VFDs) for pumps and fan systems. 

4.Strengthen electrical infrastructure

• Perform a comprehensive pre-summer electrical audit to identify areas of overload, wear, or capacity shortfall risks. 

• Document asset status with a preventive maintenance plan and investment roadmap for upgrades. 

5.Use real-time energy data as an operational guide

• Leverage Building Management Systems (BMS) or Energy Management Systems (EMS) to monitor usage patterns. 

• Adjust operations based on real-time analytics by zone, floor, or function. 

• Produce scheduled energy reports for internal oversight and open communication with residents. 

6.Raise awareness among residents

• Launch a targeted summer campaign using digital boards, email newsletters, and visual tips in lifts or lobbies. 

• Promote responsible behaviours: optimising AC use, leveraging natural daylight, and managing hot water schedules. . 

• Encourage community engagement through activities such as Earth Hour or internal energy-saving competitions. 

7.Prepare contingencies for heat-related risks

• Develop a proactive emergency plan covering equipment failure, temporary shutdowns, and occupant safety. 

• Conduct drills and readiness assessments to ensure teams respond swiftly under extreme conditions. 

Conclusion 

In today’s high-cost energy environment, optimising summer operations is necessary and strategically advantageous. With the right tools, data, and collaboration between building management and end-users, properties can exemplify operational efficiency, tenant comfort, and environmental responsibility. 

Find out more about our Consultancy and Property Management services. 

Read more: 

• Energy-Saving Strategies for Buildings – Part 1 

• Energy-Saving Strategies for Buildings – Part 2