This is a Honeywell evaporative "bypass" type humidifier. It has a drum filter that slowly turns (1rpm) picks up water and allows air to flow through the filter media. I chose this model for several reasons. 1) Absolutely no white dust fallout, 2) water pan with float fill as opposed to the curtain type that runs water continuously during the on cycle, 3) very low power consumption of only 30w when running, 4) overflow drain just in case of a stuck float valve. It is fully automatic and has a capacity of up to 2000 sq ft and can use either hard or soft water. I'm tapping into the soft water just to help keep calcification to a minimum. The filter media is easily replacable ($10) and should be done twice a year.



Here you can see the fan that pulls air through the unit. Since it is a "bypass" type humidifier it normally depends on the house A/C ductwork to push and pull the air through the unit. I bought this 6" "duct booster" fan (250cfm) and attached it where the ductwork bypass would attach. It is controlled along with the drum by the humidistat so that they are both turned on and off at the same time. This should make for a very economical system. Also it should provide ample air circulation within the humidor.