Climate control system
We strongly recommend the "Dampp Chaser" system which employees a sensor, a dryer unit and a moisturizing unit.
That system is working non stop to stabilize the immediate piano humidity microclimate.
It is discrete, it consumes min electrical power and needs water refill approx every 3 weeks and wick replacement every two years.
Works wonders on tuning stability, action friction, uniform voicing and overall instrument longevity.