They also increase the heat load in the room, a problem in hot climates where air conditioning is necessary. It holds a generous amount of water, and can be switched between two rates of evaporation. A good alternative to air conditioning is a thermoelectric cooling unit. These units are available from manufacturers of wine storage units, and can be found on the Internet under that keyword. Vinotemp is on the Web with one.
Several manufacturers provide temperature and humidity monitors.
Digital-readout designs use thermistors, with better calibration stability . Avoid the temptation to worry about wide short-term swings, because it takes a while for the cigars to react to these variations. You plug a humidifier into it, plug it into the wall, and set the humidifier at full-on. After you set the humidistat where you want it, it turns the humidifier on and off as needed. Scott is an internationally recognized cigar journalist and author.