Not exact matches
One downside of heating, however, is that it creates an
indoor environment full of
stale and dry
air.
This is because most of the people stay
indoors and breathe the same
stale recycled
air indoors.
You should also open your windows at least twice a month to allow fresher outdoor
air to replace the
stale indoor air.
Extracts humidity from the
air and converts this moisture into negative ions reversing the onset of «
stale air» in
indoor environments.