relative humidity chart

Click on the chart above to view the relative humidity chart.



Just as a window or drawer may stick in the summer time or have failing glue joints, so do changes in humidity affect your piano that is made primarily out of wood. This affects all aspects of your piano's operations.

The main reason your piano gets out of tune is related to changes in humidity. The changes in humidity cause subsequent changes in moisture content to a piano's soundboard. In the summer months, the soundboard swells with moisture increasing its crown; this increases tension on the strings, which results in the pitch going sharp.

In winter, humidity drops significantly as the heat in your home begins to come on regularly. This causes the soundboard to shrink; and lose its crown causing less tension on the strings, which results in the pitch going flat.

Year after year, this heaving results in cracks in the soundboard that can lead to other, more serious, problems. Similar effects can occur to your pinblock and action parts.

Seasonal changes in humidity are drastic in New England. Therefore, the best way to control humidity for your piano is with a Piano LIFESAVER SYSTEM by Dampp Chaser. Visit for additional information on the benefits of a humidity control system for your piano.

Installing a Piano LIFE SAVER SYSTEM is the best thing you can do for your piano to preserve its integrity. This humidity control system will provide your piano with constant 42 percent humidity that will not only help prevent long-term damage due to humidity changes, but will yield more stable and longer lasting tunings. The action parts also become stable, less prone to glue joint failure or warping and, therefore, more trouble-free.

Your Piano LIFE SAVER SYSTEM pays for itself since you eliminate the need for additional service calls. The system itself is straightforward and comes with a five-year manufacturer warrantee. Be sure a qualified piano technician installs this unit.