Rising temperatures call for smarter building practices
Each dry season brings the familiar challenge of rising temperatures and higher electricity costs.
Today, this concern is further complicated by uncertainties in global energy markets, supply constraints, and infrastructure pressures, reminding us that electricity may not always be as reliable or affordable as we expect it to be.
Design challenge
For many homes and offices, the focus has shifted from comfort alone to maintaining comfort affordably and preparing for times when power may be limited.
In many ways, extreme heat is no longer just a weather concern—it is becoming a building management and design challenge.
While long-term solutions may require investment, practical steps can begin with how we manage our buildings. Often, the quickest savings come from using existing resources more efficiently rather than buying new equipment.
Simple decisions
Simple operational decisions can immediately reduce heat gain.
Opening windows during early morning or evening releases trapped heat. Cross ventilation, achieved by opening windows on opposite sides,
improves airflow and reduces reliance on airconditioning.
These same strategies become critical during power interruptions, when natural ventilation becomes the primary source of cooling.
Managing sunlight is another effective strategy. Keeping curtains and blinds closed, especially on windows exposed to the afternoon sun, prevents heat from entering. This simple habit costs nothing but can improve comfort, particularly when mechanical cooling is unavailable.
Thermostat discipline also matters. Airconditioning should provide comfort, not excessive cooling.
Setting temperatures between 23 and 25 degrees Celsius balances comfort and efficiency. Every unnecessary degree of cooling increases electricity use without meaningful benefit.
Community efforts
Collective actions at the community level are equally valuable.
Trees provide shade that cools streets and buildings. Light-colored roofs and exterior finishes reflect heat rather than absorb it. Simple measures such as shaded walkways and small green spaces can help reduce heat in dense communities.
Cooler surroundings reduce the energy required to maintain indoor comfort while improving resilience during power disruptions.
Once building performance is improved, the next opportunity is optimizing daily routines.
Offices may consider earlier work hours to take advantage of cooler mornings. At home, consolidating tasks like laundry and ironing into scheduled days reduces heat buildup and repeated electricity use.
Resilience is not only about surviving the next heat wave, but also about being better prepared for the one after it.
Valuable lessons
Personal adjustments also help. Wearing light, breathable clothing reduces the need for excessive cooling. Staying hydrated helps regulate body temperature and improves comfort even with moderate cooling.
While these actions may seem small, they collectively reduce peak electricity demand and help households and workplaces manage costs during difficult periods.
More importantly, difficult periods provide valuable lessons. When conditions improve, these experiences can guide smarter long-term decisions—better shading, improved insulation, reflective roofing, more trees, and buildings designed for natural ventilation.
These are not only sustainability measures but also practical preparations for a future where both extreme heat and energy uncertainty may become more common.
Tomorrow’s advantages
Today’s adjustments can become tomorrow’s advantages.
While we cannot control the weather or global energy conditions, we can control how we manage our spaces and preparedness. Resilience is not only about surviving the next heat wave, but also about being better prepared for the one after it.
The author is a LEED Fellow, ASEAN Architect, and educator with over 25 years of professional practice in architecture and sustainability.
