Discomfort Tiredness Dry skin - Increased levels of dust - Damage to hair Increased static electricity Damage to wooden objects Out of tune musical instruments Discomfort to pets Dry throat
As well as temperature and air purity, another major factor in the maintenance of a healthy room atmosphere is the moisture content of the air. During winter months when rooms are heated, indoor air can dry out, sucking moisture from our skin, hair, mucous membranes in the throat and nose, furniture, plants, animals and anything else in the room.
Medical experts recommend a healthy relative air humidity of between 40-60 % RH. At this level, the moisture content of the air will be in equilibrium at the temperature of the typical indoor environment.