For years, 19°C (66°F) has been promoted as the “perfect” indoor temperature—comfortable, economical, and healthy. But according to recent expert insights, this one-size-fits-all rule is now considered outdated. The truth is, each room in your home has different temperature needs, and adjusting them correctly can improve comfort, health, and energy efficiency.
The image highlights this shift: a thermostat set to 19.3°C marked with a red “X,” symbolizing that this old standard may no longer be ideal.
Why 19°C Is No Longer the Best Choice
Experts now agree that comfort depends on activity level, room function, humidity, and time of day. A single temperature for the entire house can lead to:
- Feeling cold in living areas
- Poor sleep quality
- Higher energy consumption
- Dry air and respiratory discomfort
Instead, modern recommendations focus on room-by-room temperature control.
The New Ideal Temperatures by Room
🛋️ Living Room & Dining Room
Ideal temperature: 20–22°C (68–72°F)
These are active spaces where people sit, talk, and move around. A slightly warmer temperature improves comfort without wasting energy.
🛏️ Bedroom
Ideal temperature: 16–18°C (61–64°F)
Cooler temperatures help the body sleep better by supporting natural melatonin production and deeper rest.
🍳 Kitchen
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