Just add humidity.
I place a couple of large/wide/shallow enameled metal bowls out when we have Santa Ana winds and/or start using the heat and let the filtered tap water evaporate.
One placed in the main bedroom and one in the living room (both placed on the tops of fairly high 5'+ cabinets due to our cats).
Aside from Hi-fi stuff I also sleep/breathe better .
I used to use an ultrasonic humidifier, but got tired of cleaning/sterilizing it between fills.
The evaporative bowls work just as well.
DeKay