Piano storage
Why climate control matters for a stored piano
A piano is mostly wood and string tension, and both react to every change in the air around them.
Book storagePiano storage
A piano is mostly wood and string tension, and both react to every change in the air around them.
Book storageThe instrument
There is more wood in a piano than most people realise, and wood breathes. It takes on moisture when the air is damp and gives it up when the air is dry. As it does, it swells and shrinks. Layered on top of that is the string tension, which on a full-size instrument runs to several tonnes pulling across that same moving timber.
When the air stays stable, all of that sits in balance and the piano holds its shape and its tune. When the air swings, the wood moves, the tension shifts, and the instrument starts to fight itself. The damage is rarely dramatic on day one. It builds quietly over weeks and months of being stored in the wrong conditions.
What goes wrong
Humidity is the bigger threat of the two, and the soundboard takes the worst of it. Damp air swells the soundboard and can pop the ribs glued to its back. Dry air shrinks it, and a shrinking soundboard cracks. The pinblock, which grips the tuning pins, loosens as it dries, so the piano will not hold its tuning. Strings and metal parts rust in damp air, and the felt in the action takes on moisture and goes sluggish or sticky.
Temperature does its own harm and makes humidity worse. Heat dries everything out and can lift or craze a polished finish. Cold makes the whole instrument contract. Worst of all are the swings, warm then cold, damp then dry, because every change asks the wood to move again, and it is the constant movement that does the lasting damage.
Why ordinary storage fails
A heated home looks safe but is not, because central heating dries the air right out in winter and then it climbs again in summer, so the piano lives through a yearly swing. A garage is worse, cold and damp in winter, hot in summer, often with poor airflow. A general self-store unit is the one that catches people out, because it sounds secure but is usually just a sealed box with no humidity or temperature management at all.
None of these is designed to keep air stable around a piano. They are designed to keep boxes dry-ish and out of the rain. A piano needs more than that, and the longer it stays in the wrong place, the more the small daily movements add up into real damage.
What we do differently
Climate-controlled is a phrase that gets used loosely, so it is worth being clear about what it means in our facility. The room holds steady temperature and humidity all year, actively managed and monitored rather than left to the seasons. The point is not to hit one perfect number, it is to hold things stable so the wood is not constantly being asked to move.
On top of that, every piano is wrapped in a fitted cover, kept up off the ground and properly spaced so air can circulate around it. Stable air plus careful wrapping is what lets a piano sit for months or years and come back ready to settle and be tuned, rather than coming back with problems that were not there when it went in.
Questions
A piano is mostly wood under several tonnes of string tension, and wood swells and shrinks as the air around it changes. Steady temperature and humidity keep it in balance. Big swings crack the soundboard, loosen the pinblock, rust the strings and put it out of tune.
Damp air swells the soundboard and can lift its ribs, rusts the strings and pins, and makes the action felt sluggish. Dry air shrinks the soundboard until it cracks and loosens the pinblock so the piano will not hold its tuning. Both extremes do harm.
It is risky. Garages run cold and damp then hot, with poor airflow. General self-store units sound secure but usually have no humidity or temperature management at all. Neither is built to keep air stable around a piano, which is what the instrument actually needs.
Less safe than people expect. Central heating dries the air out in winter and it climbs again in summer, so the piano lives through a yearly swing. It is the constant movement, not one bad day, that builds up into cracks and tuning problems over time.
It means temperature and humidity are actively managed and held steady all year, and monitored rather than left to the seasons. The aim is stability so the wood is not always being asked to move. Every piano is also wrapped, raised off the floor and well spaced.
Usually yes, but mainly because it has moved location and needs to settle into your room again. Stable storage means it should come out close to where it was, rather than wildly out, and a tuning once it has acclimatised gets it singing again.
More on storage
We collect, protect and re-deliver. You only pay for the time you use.
Get an instant price