Changing Humidity Level
Hurts Your Piano
Your piano is made primarily of wood, a versatile and beautiful material ideal for piano construction.
However, being made of wood, your piano is greatly affected by humidity.
Seasonal and even daily changes in humidity cause wood parts to swell and shrink, affecting tuning stability and touch. Extreme swings in humidity can eventually cause wood to crack and glue joints to fail.
Other materials in your piano also affected by changes in moisture content in the air.
Felts and leather parts in your piano’s action can change dimension, affecting regulation and function, or stiffness of the touch. Very high humidity can even create condensation on metal parts such as strings, tuning pins, and hardware, eventually causing them to rust.