A Practical Piano Maintenance Guide
Tuning gets all the attention, but it is only one of several kinds of care a fine piano needs. A well-maintained instrument is tuned, cleaned, regulated, and voiced — four distinct jobs that together keep it playing and sounding its best. This guide explains each one so you know what your piano needs and what a technician is talking about.
Tuning vs. Regulation vs. Voicing
These three terms are often confused, so it helps to separate them clearly. Tuning adjusts string tension so the notes are at the correct pitch. Regulation adjusts the mechanical action — the thousands of moving wooden and felt parts — so the keys respond evenly and precisely. Voicing adjusts the density of the felt hammers so the tone is even and has the character you want, from mellow to bright. A piano can be perfectly in tune yet still feel uneven to play or sound harsh; that's a regulation or voicing issue, not a tuning one.
Everyday Cleaning and Care
Most day-to-day care is simple and something owners can do themselves:
- Dust the case with a soft, dry or slightly damp cloth. Wipe gently in the direction of any grain and avoid commercial furniture sprays, which can build up or damage certain finishes.
- Clean the keys with a cloth barely dampened with water, wiping from back to front rather than side to side so moisture doesn't run between the keys. Dry them afterward. Avoid soaking — excess water is the enemy of both keytops and the wood beneath.
- Close the fallboard (the key cover) when the piano isn't in use to keep dust and sunlight off the keys.
- Keep liquids away. Never set drinks or vases on a piano; a spill into the action is a costly repair.
Leave the inside — the strings, action, and soundboard — to a technician. The mechanism is delicate and precisely adjusted, and well-meaning cleaning can knock parts out of alignment.
Regulation: Keeping the Action Precise
The action is the intricate assembly that translates a press of the key into a hammer striking the strings. Each of the 88 keys drives a chain of parts — whippens, jacks, hammers, dampers — through a precise geometry. As felt compresses and wooden parts settle, that geometry drifts, and the piano can develop uneven touch, notes that don't repeat quickly, or a spongy feel.
Regulation is the process of restoring those tolerances: adjusting key height and depth, hammer distance from the strings, and the timing of each part. A concert instrument may be regulated frequently; a home piano might need it every several years. Good regulation is what makes a piano feel responsive and consistent under the fingers; the Piano Technicians Guild maintains the professional standards for this kind of work.
Voicing: Shaping the Tone
Two pianos of the same model can sound noticeably different because of voicing — the conditioning of the hammer felt. New or hard-packed felt tends to sound bright or even harsh; softening it (or, conversely, hardening felt that has gone too mellow) evens out the tone across the keyboard and gives the instrument its voice. Voicing is done by a technician using specialized tools, and it's often the finishing touch after tuning and regulation.
A Simple Long-Term Plan
A sensible maintenance rhythm for most home pianos looks like this:
- Tuning: at least twice a year — see how often to tune.
- Humidity control: ongoing, year-round — the highest-leverage thing you can do (details here).
- Regulation and voicing: periodically, as the instrument's touch and tone drift — your technician will advise based on use.
- Professional cleaning: occasionally, to clear dust from inside the instrument.
Follow it and even a modest piano will stay a pleasure to play. For help finding the right person to handle the work you can't do yourself, read choosing a piano technician.