Why experts are quietly moving away from the indoor 19°C rule

The long-standing advice to keep homes at 19°C is being re-evaluated. New research highlights the importance of consistent warmth for health, sleep, and preventing mould, suggesting a range of 18°C to 21°C is more appropriate. Modern heating systems and better insulation mean a flexible approach, rather than a strict temperature, is now more efficient and healthier.

Why experts are quietly moving away from the indoor 19°C rule
The long-standing advice to keep homes at 19°C is being re-evaluated. New research highlights the importance of consistent warmth for health, sleep, and preventing mould, suggesting a range of 18°C to 21°C is more appropriate. Modern heating systems and better insulation mean a flexible approach, rather than a strict temperature, is now more efficient and healthier.