I am a Certified installer for Dampp-Chaser humidity control systems.
Humidity changes are a very important factor in maintaining stability in your piano. It causes tuning instability, sticky keys, sluggish action,rusty strings and is also critical to the stability of your soundboard.
Excessive humidity changes are the greatest cause of soundboard cracks.
The Dampp chaser system offers the most advanced and best humidity control systems available today. Complete systems consist of:
1 or more dehumidifiers
1 humidistat which controls the system to maintain about a 45% humidity year round for your piano.
1 light panel ,1Easy-fill watering tube
Humidity Control Systems