although i really like flow-through furnace humidifiers, because they don’t grow germs, they also waste a lot of water. i’d like to put an art controller on the solenoid valve to “pulse” it on and off – once the evaporator panel is wet, you can turn off the flow instead of leaving it running, and save 80-90% of the water. the art controller is almost perfect for this, with its programmability and relay output. but…
the humidifier and its solenoid valve run on a 27vac transformer. is there an easy way to power the art controller from that?