The Battle
for Air Con
Britain keeps treating overheated homes and workplaces as a weather problem. It is a policy choice — and it is costing lives.
vs >90% in the US & Japan
vs a global average of 37%
This is not weather. It is a choice.
Heat is now a reliable annual killer
England's heat-associated deaths, year by year. The summer of 2022 — when 40.3°C was recorded for the first time in British history — was the deadliest on record.
The 2016–19 PHE point estimates were never revised and academic re-analysis put some years materially higher (~1,700 for 2018); the method changed again in 2022. Treat cross-year comparisons as indicative, not precise — the direction of travel is not in doubt.
We die of heat like nowhere else in northern Europe
Same latitude. Same mild summers. Wildly different death tolls. In 2022 the UK's heat-death rate ran more than ten times Sweden's and roughly twice the Netherlands' — and London's rate approached Rome's.
And it quietly drains the economy
Heat doesn't just kill — it slows everything down. ONS modelling puts the average loss to hot days at over a billion pounds a year, and far more in a bad one.
A worker in a 30°C office is around 9% less productive than at a comfortable 22°C.
↗ eScholarship · British ProgressEvery 1°C rise in summer temperature shaves UK economic growth by about 2.4%.
↗ Manchester Met 2025UK adults say their productivity has been hit by very hot weather (897 surveyed).
↗ Grantham · ImperialThe HSE sets a 16°C minimum but says there is "no meaningful upper limit." Unions are campaigning for a legal cap of 30°C — 27°C for strenuous work. Spain and Germany already have one.
This was never the weather. It's a policy choice
Britain's rules actively discourage cooling — even as the government's own climate advisers now say the opposite. Three quiet decisions are doing the damage:
New homes must limit overheating with passive measures — and treat mechanical cooling as a last resort, precluding AC in many new builds.
↗ Building Regs 2022The "cooling hierarchy" steers major developments to use AC only as a last resort — in the city with the hottest, smallest homes.
↗ The London PlanECO4 and CHMM still exclude air-to-air heat pumps — the one technology that delivers low-carbon heat and cooling. The Boiler Upgrade Scheme finally added them in late 2025, but at £2,500 — a third of its £7,500 air-source grant.
↗ DESNZ · British ProgressThe story is still moving
A compact feed of current UK heatwave pressure points: alerts, broken records, disrupted services, water deaths and the policy gap behind them.
The Battle
for Air Con
Britain still treats air conditioning as a luxury. The numbers above suggest it’s becoming a necessity. Pass them on — the list below only gets in touch when a petition or vote actually opens, nothing else.