Piano humidity control

by vkungs


Originally posted on 24/05/2013 12:00

In our last post we briefly looked at the dangers of overly dry or humid conditions around one’s piano. Dry conditions are considerably more common, and can lead to problems such as loose tuning pins,rattling keys, and cracks in the pinblock and soundboard. Overly moist conditions cause wood to swell, crushing sensitive parts under undue pressure, and will cause the thousands of moving parts in the piano’s action to lose proper regulation, leading to sluggish response times/performance. Excess moisture also causes convex bulging in the bridge, putting excess tension on the strings and causing the pitch to go sharp. In dry conditions, the bridge goes flat, and creates the opposite problem.

The solution is quite simple. Keep your instrument away from heat and a/c sources, and maintain proper humidity levels, which can be checked with the qauges mentioned in our last post. There are several ways to go about this. Any standard humidifier/dehumidifier placed under or near the instrument will do the job, but there is a downside to this: cost. While it may seem like the simpler, more affordable fix when compared to buying a dedicated piano humidifying system, the annual cost of operation can be nearly ten times that of the on-board piano system. These dedicated systems, such as the Piano Life Saver from Dampp-Chaser, consist of a humidistat, humidifier, dehumidifier, a water-fill tube and an indicator panel to tell you when to top up the water supply. Not only are they cheaper to operate, they require less work, requiring attention only a couple times a month, as opposed to nearly every single day.

If you’d like to have such a system installed in your upright or grand piano, give IVORIES.CA a call today at 416-871-2550!