A severe heatwave in Belgium has triggered a massive rush for new and second-hand air conditioning units across the country.
The surge in demand highlights a growing tension between the immediate need for residential cooling and the resulting strain on the national energy grid. As temperatures climb, the shift toward mechanical cooling is altering electricity consumption patterns in urban centers.
In Brussels, average electricity consumption has risen by 11% [1] during the current heatwave. This spike is attributed to the widespread use of cooling systems as residents attempt to mitigate extreme indoor temperatures.
The demand for installation services has far outpaced the available workforce. Some air-conditioning installers are now fully booked until 2027 [2], leaving many homeowners unable to secure professional help during the peak of the weather event.
This "stormloop," or rush, has extended to the second-hand market. Reports indicate that some retail inventories of cooling units have been completely depleted as consumers scramble for any available options to cool their homes.
The situation has sparked a broader public debate involving officials and environmental advocates. Aimen Horch, chair of Groen, and Flemish Environment Minister Jo Brouns have been central to discussions regarding the sustainability of this cooling trend.
While air conditioners provide immediate relief, the increased energy load puts pressure on the grid and contributes to a cycle of higher energy emissions. The current crisis underscores the lack of passive cooling infrastructure in many Belgian homes, which were historically designed to retain heat rather than repel it.
“Some air-conditioning installers are now fully booked until 2027”
The crisis in Belgium reflects a systemic lag between climate shifts and urban infrastructure. The reliance on energy-intensive air conditioning to combat heatwaves creates a feedback loop where increased electricity demand may strain the grid and exacerbate environmental goals, suggesting a need for long-term architectural adaptation over short-term mechanical fixes.
