Overview
- Shichao Liu of Worcester Polytechnic Institute says setting 15°C will not cool a home faster than 20–21°C because the unit delivers the same cooling power.
- Jennifer Amann of the American Council for an Energy-Efficient Economy warns that constant temperature changes or power cycling reduces efficiency and raises consumption.
- Specialists advise choosing a comfortable temperature and holding it steady rather than chasing rapid cool-downs that the system cannot deliver.
- Performance improves with simple steps such as closing blinds and curtains during peak sun and keeping filters clean while checking refrigerant levels, with winter flagged as the ideal time for preventive service.
- Health experts in Argentina caution against heavy overnight use that dries airways and disturbs sleep, suggesting moderated fan use and standard heat-wave measures like staying hydrated and protecting vulnerable people.