Here is a statistic that tends to stop conversations: more than 175,000 people die from heat-related causes in Europe every year. In the United States, roughly 44,000 people die annually from gun violence. The comparison is jarring because it inverts everything Americans and Europeans tend to believe about their respective societies.
Europeans often view gun deaths in America as evidence of a broken culture, a failure of policy so profound it borders on pathological. Americans, meanwhile, rarely think about heat deaths in Europe at all. They should. The 2003 heat wave killed more than 70,000 Europeans. In France alone, nearly 15,000 people died in a matter of weeks. Most were elderly, many were isolated, and almost none had air conditioning. The country was unprepared because it had convinced itself that extreme heat was someone else's problem.
Two Philosophies, Two Outcomes
In the United States, air conditioning is not a luxury. It is infrastructure. According to the U.S. Energy Information Administration, 88% of American households have some form of air conditioning, with two-thirds using central systems. In the South and Midwest, the figure exceeds 92%. The assumption that homes will be climate-controlled is baked into everything from building codes to lease agreements to data center design.
Europe operates under a different set of assumptions. Only about 10 to 20% of European households have air conditioning. In Germany, the figure is 3%. In the United Kingdom, it hovers around 5%. These numbers persist not because Europeans cannot afford air conditioning but because many actively choose not to install it.
The reasons are layered. Older building stock makes retrofitting difficult. Energy costs are higher. There is a cultural belief, particularly in Northern Europe, that air conditioning is wasteful, perhaps even decadent. And then there are the regulations.
When Policy Becomes Obstacle
In some European cities, installing an external AC unit requires navigating heritage preservation laws, conservation area rules, and permit processes that can stretch for months. In Geneva, you may need to demonstrate a medical necessity. In Portofino, Italy, neighbors have reportedly turned each other in for installing units illegally, with fines reaching up to €43,000. France has banned outdoor heating and cooling at restaurant terraces. Spain, Italy, and Greece have imposed limits on how cold public buildings can be set, often no lower than 27°C (about 81°F).
The European Union has not banned air conditioning outright, but its regulatory framework makes adoption harder. The F-gas regulation restricts certain refrigerants. The Ecodesign Directive mandates efficiency standards that effectively ban cheaper models. The Energy Performance of Buildings Directive pushes toward carbon-neutral construction, which in practice often means prioritizing insulation over active cooling. None of this is malicious. Much of it is well-intentioned climate policy. But the cumulative effect is that millions of Europeans face rising temperatures with no technological backstop.
The Cost of Inaction
Europe is warming faster than any other continent, at roughly twice the global average rate. The WHO European Region now accounts for 36% of global heat-related deaths. A study published in Nature Medicine found that 62,775 heat-related deaths occurred across 32 European countries during the summer of 2024 alone. Italy led with more than 19,000 deaths. The study also found that heat-related mortality among women was 46.7% higher than among men, and among those over 75, mortality rates were more than 300% higher than in other age groups.
These are not abstract numbers. They represent people who died preventable deaths because they could not cool their homes. The populations most vulnerable to heat, the elderly, the isolated, those with chronic conditions, are precisely the people least equipped to install air conditioning or navigate bureaucratic permit processes.
America's Quiet Success
The United States has its own heat problems. Record temperatures now strike regions that historically did not need much cooling, and grid strain during peak demand remains a concern. But the widespread adoption of air conditioning has functionally decoupled indoor temperatures from outdoor ones for most of the population. The result is that heat waves, while dangerous, kill far fewer Americans per capita than Europeans.
This is not because Americans are physiologically hardier. It is because they live in buildings designed to stay cool. The infrastructure exists. The cultural expectation exists. The regulatory environment permits it.
The Road Ahead
Europe faces a choice. It can continue treating air conditioning as a cultural vice, a symbol of American excess to be resisted in the name of sustainability. Or it can acknowledge that climate adaptation requires more than open windows and light clothing. The International Energy Agency projects that installed AC units in the EU will rise to 275 million by 2050, more than double 2019 levels. Market forces are already pushing adoption higher, particularly in Southern Europe.
But policy can either accelerate or impede that transition. Streamlining permits, subsidizing heat pumps that double as cooling systems, and updating building codes to require cooling capacity in new construction would all help. So would dropping the pretense that air conditioning is somehow morally inferior to other electrified technologies.
The comparison to gun deaths is imperfect. Guns kill through violence; heat kills through inaction. But both represent policy failures at scale, preventable mortality that societies have chosen to tolerate. Europe lectures America about guns. Perhaps America should return the favor on air conditioning.
