With respect to Lance Laforgue's comments about the lack of sensitivity of Dampp-Chaser humidistats, I can only say that I haven't experienced that problem. If I could keep the RH within a range of 6%(46% to 52%) on all the pianos I service I would be one extremely happy camper. If you live in a very humid place, Lance, and find yourself constantly adding water to the D-Ch. humidifier, the likely problem is a poor placement of the humidistat resulting in improper feedback from the humidifier, or even having the humidifier plugged into the dehumidifier outlet on the humidistat. Although I live in a desert area, the humidity in July and August is fairly high (the RH in my shop in the early morning has been over 80% for the last week, and I haven't added water to the humidifier in the piano in there since early July), and neither I nor any of my customers who have the systems use much water during this time span. In fact, customers notice how little water they're using and sometimes wonder if the systems are working. They always are. They just don't use any water if the humidity is high enough. Bob Anderson Tucson,AZ
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