How do electronic humidification systems compare to passive systems?

It depends on how wet they are. In general, electronic systems are superior to passive Credo-type humidifiers because they require less maintenance and provide more stable humidity. However, there are some electronic systems on the market that are inferior to good passive systems and simply don’t perform to the manufacturer’s specifications. A good quality electronic system is a must for the cigar smoker seeking to age and preserve cigars over a period of months and years. Among the desirable features to look for in electronic systems: A large water reservoir with a minimum 30 day supply. Time-to-fill water level indicators. An operating range no larger than 5%. Simple and accurate set point adjustment.