- European AC usage is historically low due to cooler past climates, making it unnecessary; adoption rates are higher in southern Europe where temperatures are warmer.
- Climate change is increasing extreme heatwaves in Europe, leading to a reevaluation of AC needs, especially in vulnerable settings like hospitals and care homes.
- AC emissions contribute to global warming, but impacts can be mitigated through decarbonized electricity grids, energy efficiency, and renewable energy integration.
- AC units release heat outdoors, exacerbating urban heat island effects, which is a concern in dense European cities compared to less dense US areas.