Why do you feel cold inside your house even though it is 19°C?

The Individual Perception of Cold

The sensation of cold varies from one person to another. This phenomenon, called thermoception, relies on skin receptors that respond to contact temperatures and thermal variations. Sometimes, a simple drop of a few degrees is enough to trigger a shiver, while others seem immune. This discrepancy explains why some wear winter clothing while others flaunt tank tops. An ambient temperature of 19°C, perceived as mild by some, can feel icy to others.

The Role of Humidity Levels in Indoor Air

The humidity level greatly influences the sensation of cold. Relatively dry air, especially in winter, exacerbates the evaporation of skin moisture. This loss combined with an already cool atmosphere intensifies the perception of cold, particularly for those prone to sweating. Conversely, an overly humid environment traps moisture on the skin, also leading to an unpleasant sensation. Ideally, the humidity level in a home should fluctuate between 40 and 60%.

Air Currents, Formidable Enemies

Air currents, whether minor or more pronounced, undeniably cause an additional sensation of cold. Often, neglected areas, such as the joints of poorly insulated windows or doors, allow cold air to infiltrate your home. Spaces under doors also serve as prime entry points for the cold. A simple bead of silicone or the installation of threshold bars can work wonders in blocking these unwanted intrusions.

The Impact of Thermal Insulation

Poorly insulated walls and windows are true sources of chills. When cold to the touch, they absorb heat from the indoor air, thus influencing thermal comfort. A heating system, although effective, only brings superficial warmth if the walls remain icy. Strengthening insulation, especially with eco-friendly materials, will help maintain a pleasant and constant temperature, far from the discomforts caused by cold walls.

Physiological Factors and the Subjectivity of Sensation

The perception of cold is also conditioned by physiological elements. Studies reveal that women generally show greater sensitivity to thermal variations. This can be explained by biological differences, such as lower muscle mass and slightly slower metabolism. Other factors like age, circulatory disorders, or specific illnesses increase sensitivity to cold. Each individual thus has a unique experience regarding thermal comfort.

Frequently Asked Questions About the Sensation of Cold Inside Your Home

Why do I feel cold at home when it’s 19°C?
The sensation of cold may be caused by poor insulation of your home, air currents entering through cracks or poorly sealed joints, or a humidity level that is too high, which enhances the perception of cold.
How does humidity influence my sensation of cold?
A high humidity level indoors can make the air feel colder to the touch, as it prevents the evaporation of sweat and thus intensifies the cool sensation on your skin.
Do cold walls play a role in my sensation of cold?
Yes, poorly insulated walls or cold surfaces will absorb heat from the ambient air, causing a more pronounced sensation of cold, even when the air temperature is at 19°C.
Can indoor air circulation affect the perceived temperature?
Absolutely! Air currents from drafty windows or improperly closed doors can create cold spots in your home, enhancing the feeling of low temperature.
Why do some people feel colder at 19°C than others?
The perception of cold varies from person to person, influenced by factors such as age, metabolism, and health conditions. Generally, older adults or those with circulatory disorders feel the cold more.
What adjustments can I make to improve thermal comfort in my home?
To improve your comfort, it is advisable to check the insulation of walls and windows, regulate the humidity level through proper ventilation, and use threshold bars to block air currents.
Does indoor air quality affect my comfort sensation?
Yes, air that is too dry or too humid can affect your thermal comfort. Ideally, the humidity level should be between 40 and 60% to optimize the sensation of warmth.