Here is the list of FAQ you may have about your piano: (The following information provided by Piano Technician Guild Inc.)
Why Do Pianos Need Tuning?
“If I move my piano to another room, does it need to be re-tuned? My grandmother had a fine old upright that she never got tuned. Why does my piano need regular tuning? Back home we always kept a jar of water in the bottom of the piano. Does this help keep the piano in tune? How often does my piano need tuning? Piano technicians hear these questions every day. Tuning is the most frequent and important type of piano maintenance, but it's often the least understood. Here we'll look at why pianos go out of tune and how you can help yours stay in better tune between visits from your technician.
First, new pianos are a special case; their pitch drops quickly for the first few years as the new strings stretch and wood parts settle. It's very important that a new piano be maintained at proper pitch (A-440) during this period, so the string tension and piano structure can reach stable equilibrium. Most manufacturers recommend three to four tunings the first year, and at least two annually after that.
Aside from this initial settling, seasonal change is the primary reason pianos go out of tune. To understand why, you must realize that the piano's main acoustical structure, the soundboard, is made of wood (typically 3/8-inch thick Sitka spruce). And while the wooden soundboards produce a wonderful sound, they also react constantly to weather. As humidity goes up, a soundboard swells, increasing its crowned shape and stretching the piano's strings to a higher pitch. During dry times, the soundboard flattens out, lowering tension on he strings and causing the pitch to drop.
Unfortunately, the strings don't change pitch equally. Those near the soundboard's edge move the least, and those near the center move the most. So, unless it's in a hermetically sealed chamber, every piano is constantly going out of tune!
The good news is there are some simple things you can do to keep your piano sounding sweet and harmonious between regular service appointments. Although it's impossible to prevent every minor variation in indoor climate, you can often improve conditions for your piano.
• Start by locating the piano away from direct sunlight, drafts, and heat sources. Excess heating causes extreme dryness, so try to keep the temperature moderate (below 70 degrees) during the winter heating season.
• Get a portable room humidifier, or install a central humidification system to combat winter dryness in climates with very cold, dry winters. A portable dehumidifier or a dehumidifier added to your air-conditioning system can remove excess moisture during hot, muggy summers.
• If controlling your home's environment is impractical, or if you want the best protection possible, have a humidity control system installed inside your piano. These are very effective in controlling the climate within the instrument itself. Besides improving tuning stability, they help minimize the constant swelling and shrinking of your piano's wooden parts. The critical part of such a system is the humidistat, a device that monitors the relative humidity within the piano and adds or removes moisture as needed. Jars of water, light bulbs, or other “home remedies” have no such control and can actually do more harm than good.
Does A Piano Need Tuning After It's Moved?
It depends. The piano is a complex instrument, with over hundred individual strings and thousands of moving parts. Each string must be painstakingly adjusted to put the piano in tune. Even the tiniest change in a string's tension can be heard by a practiced ear.
You might think, then, that trucking a piano down the highway or even rolling down a hall could “knock it out of tune.” However, pianos are actually quite tough. They're built to withstand up to 20 tons of string tension and decades of heavy usage, so the physical movement of a piano usually has very little effect on its tuning or other adjustments.
It's the climate change associated with the move, rather than the actually move itself, that makes pianos go out of tune. A substantial difference in humidity between its previous location and its new home will change the shape of the piano's soundboard, changing tension on the strings.
For instance, a well-tuned piano moved fifty miles from a heated, dry apartment to a cool, humid home will sound fine immediately after the move. But a week later, after adjusting to the higher humidity, the piano will sound out of tune. Even moving a piano from one room to another in the same building can affect it if heating or air-conditioning patterns are different.
An exception is he vertical piano. Because they have four casters (grands have three), they occasionally flex enough to distort there tuning pattern immediately if moved to an uneven floor. Moving the piano back to a flat surface will return the tuning to normal. This is most noticeable with light built spinets and consoles, and can occur simply by moving the piano a few inches if one caster rolls off the carpeting or into a low spot on the floor.
So, do you have to tune your piano after moving it? Pianos need periodic tuning anyway, whether they are moved or not, so it's likely that a piano that has just been moved was already due for tuning before the move. If so, it's best to let the piano adjust to its new environment for a week or two, then have it tuned. On the other hand, if the piano had been recently tuned before the move, you might just hold off and see how the piano sounds after a few weeks. If the climate of the new location is similar to the old, your piano will probably sound fine until its next regular service date.
Does It Hurt My Piano When Kids Pound On It?
Because it's so annoying, the racket of keys struck at random may rattle your nerves, but it won't damage the piano.
Most pianos are built to withstand very heavy use. Next time you see a serious pianist perform a flamboyant classical piece, notice how forcefully he or she attacks the keyboard. Or listen to how hard your tuner pounds each key when tuning your piano. In comparison, a child's small hands couldn't possibly play that hard.
The real danger of children playing with, as opposed to playing, a piano is that they often can't resist dropping small toys inside, slipping coins into the slots between the keys, or running toys across the finish.
But remember that music exists to give pleasure. Encourage your child to have fun with the piano, not to be afraid of it. Don't worry if young children play haphazardly and loudly. If you teach respect for the instrument and they discover how enjoyable playing can be, they'll treat it properly. And if your children learn that playing the piano is fun, you won't have to plead with them to practice when they're older.
How Long Will A Piano Last?
Pianos are among the most durable of personal possessions. Admired for their fine cabinetry and treasured for their beautiful sound, pianos usually lead a pampered life in the best room of the house.