Wilczynski Music technicians recommend and install the Dampp-Chaser Humidity Control System for all vertical and grand pianos.  Seasonal temperature and humidity level fluctuations are big factors in maintaining a healthy piano.   Excessive humidity causes wooden parts to swell and stick, and causes metal parts to rust.  Excessive dryness causes wooden parts to shrink and crack, tuning pins and glue joints to loosen, and the tuning to go flat.  The Dampp-Chaser system is designed to independently control the temperature and humidity level required to keep your piano in optimum condition regardless of the external ambient  environment surrounding the piano.  Talk to a qualified piano technician about Dampp-Chaser humidity control systems.  E-mail us today!