London's housing crisis is not just about the lack of affordable homes, but also about the growing threat of overheating. As the city grapples with the impacts of climate change, experts are warning that the current approach to cooling homes is inadequate. The London Assembly Planning and Regeneration Committee is right to examine this issue, as it highlights the need for a more comprehensive strategy to protect residents from the effects of extreme heat.
The focus on 'passive' cooling measures, such as trees, green roofs, and shading, is understandable. These methods are environmentally friendly and can help reduce the urban heat island effect. However, the committee should also consider the importance of 'active' cooling measures, such as air conditioning (AC), in addressing the most extreme heat risks.
The current London Plan's reluctance to encourage AC systems is concerning. The argument that these systems have significant energy requirements and can exacerbate the urban heat island effect is valid, but it ignores the potential for efficient, sustainable active cooling solutions. As temperatures rise, the need for effective cooling becomes more urgent, and the current approach may not be sufficient to protect residents.
Ed Hezlet's point that active measures are crucial in dealing with tail risks of very high temperatures is well-made. The fact that just 5% of British households have AC units highlights the need for a shift in policy. The committee should consider how to encourage the adoption of efficient active cooling systems, such as smart thermostats and heat pumps, which can provide effective cooling without the same environmental impact as traditional AC units.
Anna Mavrogianni's research showing a sevenfold increase in AC installation between 2011 and 2022 is a wake-up call. It suggests that the public is recognizing the need for cooling, but the current approach is not meeting that demand. The committee should explore how to make active cooling more accessible and affordable, while also promoting the use of passive cooling measures.
In my opinion, the committee should take a more balanced approach to cooling London's homes. While passive measures are important, active cooling should not be dismissed as a potential solution. By encouraging the adoption of efficient active cooling systems, the committee can help protect residents from the impacts of extreme heat while also promoting sustainable, environmentally friendly solutions.
The future of London's housing stock depends on the committee's ability to address the issue of overheating. By taking a comprehensive approach that considers both passive and active cooling measures, the committee can help create a more resilient, comfortable, and sustainable city for all its residents.
