Can you put the guitars in a smaller room and supplement the whole house humidifiers with a room humidifier?
Turn down the thermostat a few degrees to raise RH?
Hang some laundry to dry?
Keep a pot of water simmering? (I remember a thread from someone here a couple of winters ago involving a crock pot with the lid partly off.)
(editing to add: If you have warmer weather on the way soon, you might not need to do anything. Your guitars should be able to handle a day or two of RH in the 30s.)
Last edited by cmd612; 01-20-2019 at 03:05 PM.
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