# Ideal comfort

Temperature perceived is determined by the combination of actual temperature and relative humidity.
The ratio of air humidity and temperature is proportional: the higher the temperature, the more air is capable of retaining steam.

De’ Longhi has identified ideal comfort standards: the graph below highlights the standards that achieve such conditions.

difficult to sustain
ideal
sustainable
SeasonTemperatureRelative humidity
Winter 21°C ÷ 25°C 30% ÷ 75%
Spring 24°C ÷ 27°C 25% ÷ 55%