@Klaus said in Why can't women understand thermostats?:
My favorite part of this issue is in the car.
I usually leave the temperature at 21°C (70F) all year round.
Winter, everyone is wearing three layers of clothing. It's 21°C in the car.
Wife: "Turn up the heating, I'm cold".
Summer, everyone is in shorts. It's 21°C in the car.
Wife: "It's too hot in here! Put the AC on max!"
IIRC, comfort also depends on relative humidity, and it’s drier in the winter which makes people feel colder, and wetter in the summer which makes people feel warmer. Latent heat of vaporization and thermodynamics explain this— drier air causes your body to wick more moisture which cools you down. Wetter air contains more heat which also prevents the cooling effect (depending on temp and relative humidity). Look up adiabetic process, which is what modern HVAC systems use to optimize comfort (which can involve both humidifiers and dehumidifiers). Our skin is one large evaporative cooler /heat exchanger.