Restricting AC Temperature: A Climate-Smart and Health-Safe Cooling Strategy
Kartavya Desk Staff
Syllabus: Energy
Source: TH
Context: The Union Ministry of Power has proposed restricting the operational temperature range of new air conditioners to 20°C–28°C to save energy and safeguard public health.
About Restricting AC Temperature: A Climate-Smart and Health-Safe Cooling Strategy:
What is the Proposal?
• The new guidelines will mandate default AC settings between 20°C and 28°C in all new units used in homes, hotels, and vehicles.
• Unlike the earlier 24°C default advisory in 2018, these norms aim for hardwired compliance in manufacturing.
Why It Matters?
• Rising Cooling Load: India’s cooling demand is projected to reach 200 GW by 2030, placing a heavy burden on power infrastructure.
• Current Consumption: Air conditioners already account for 50 GW—about 20% of peak demand, despite low market penetration.
• Low Household Use, High Growth Potential: Only 6% of households currently use ACs, indicating massive future load if unregulated.
• Cost Implications: Increased cooling demand may force higher electricity tariffs and fossil-fuel-based generation, impacting economic equity.
Health Risks of Low Temperatures (<18°C):
• Cardiovascular Strain: Vasoconstriction below 18°C raises blood pressure by 6–8 mmHg, increasing hypertension risk.
• Respiratory Impacts in Children: Exposure to 16°C or less linked to lower lung capacity and airway resistance, especially in children.
• Mental Health Stress: Cold indoor climates are associated with higher depression and anxiety levels, as seen in UK studies.
• Disrupted Sleep Cycles: Constant overcooling disturbs sleep patterns, weakens immunity, and impairs daily functioning.
• Elderly Vulnerability: Elderly and infants have weaker thermoregulation, leading to higher morbidity in cold homes.
Restricting Temperature Range Helps:
• Energy Savings: Every 1°C increase in AC setting saves 6% power, enabling 20 billion units saved per year.
• Emissions Reduction: Lower consumption curbs CO₂ emissions, supporting India’s net-zero goals.
• System Efficiency: Reduces grid stress during summer, avoiding blackouts and fuel cost escalation.
• Health-Conscious Cooling: Ensures thermal comfort without health trade-offs, especially in densely populated urban areas.
• Model Global Practice: Follows global examples like Japan’s 28°C default, creating behavioral norms for responsible use.
Significance:
• Supports ICAP Goals: Reinforces the India Cooling Action Plan to reduce cooling energy demand by 25–30% by 2038.
• Meets Global Climate Commitments: Contributes to Paris Agreement targets and SDG 13: Climate Action.
• Enables Energy Equity: Helps keep energy affordable and accessible across income groups by controlling demand spikes.
• Public Awareness: Educates users on the health and economic downsides of extreme cooling preferences.
• Long-Term Urban Resilience: Promotes sustainable urban cooling strategies aligned with smart city goals and climate resilience.
Conclusion:
proposed AC temperature norms represent a scientifically backed, eco-friendly, and health-sensitive policy shift. By curbing energy use and public health risks, India takes a crucial step towards sustainable urban living and climate resilience.
• What are the key features of the National Clean Air Programme (NCAP) initiated by the Government of India? (2020)