Think ecologically and physically and about your health.
In the winter, the best humidity in a room lies between 45% and 65% relative humidity (relh.).
So, 55% relh. is a good value for your muscous membranes and for you plants!
When you heat cool air, then the relh. falls, because warm air absorbs more water.
(at 22.5°C about 20g or 20ml per m³) So, when the relh. in your room is 40%, then there are about ((55-relh.)x0.2)g/m³ water missing to obtain 55% relh..
Buy a hygrometer and do not spill electric-energy for drying your cloth in the winter.
Dry them on a stand near the heater and watch the hygrometer.
That`s good for your health, your plants and the climate (and your purse).
Eine Freundschafts und Partnervermittlung (nicht nur) für Vegetarier: