Cleaning the piano – how to keep your piano clean and well-maintained

Oli Kipfer
Jun 15
8 min read

A piano is not just a musical instrument, but also a sensitive piece of furniture. Over time, dust, fingerprints, and environmental factors settle on the keys, surface, and casing – and can even cause damage if cleaned incorrectly. To ensure your piano or grand piano looks good for a long time and feels pleasant to play, proper care is essential. In this article, you will learn how to gently clean piano keys, the casing, and surfaces, which cleaning agents are suitable, and what you should absolutely avoid.

Cleaning the piano – what fundamentally matters

Before you start working on the keys, surface, or casing, it is worth taking a quick look at the basics. Pianos consist of sensitive materials that can react quickly to moisture, incorrect cleaning agents, and improper handling. With a few simple rules, you can prevent the cleaning from causing more harm than good.

Why regular piano cleaning is important

Dust and dirt are not just a visual problem. They can settle between the keys, get into the mechanism, and impair the playing feel over the long term. Regular, gentle cleaning helps to protect surfaces, reduce wear and tear, and maintain the value of the instrument. Especially with frequently used pianos, this becomes significantly noticeable in the long run.

What you should consider before cleaning

Before you begin cleaning, you should consider a few fundamental points. They ensure that your piano is cleaned safely and in a material-friendly manner.

Never use aggressive cleaners or all-purpose agents.
Only work with slightly dampened, soft cloths.
Never spray cleaning agents directly onto the piano.
Clean the keys and casing separately from one another.
Make sure that no moisture gets between the keys.

If these basics are observed, the piano can be cleaned safely without endangering surfaces or the mechanism. All further cleaning steps build upon this.

Cleaning piano keys

The piano keys are the part of the instrument that is touched most frequently. Accordingly, dust, skin oils, and fine dirt accumulate here. Gentle, regular cleaning ensures not only a clean appearance but also a pleasant playing feel.

Cleaning piano keys correctly

For regular cleaning, a simple, cautious procedure is sufficient. It is important that as little moisture as possible is used and that no residue remains on the keys.

Use a soft, lint-free cloth
Moisten the cloth slightly with water, not wet
Wipe keys individually from back to front
Then wipe down with a dry cloth

This removes dirt and fingerprints without moisture getting between the keys or surfaces being damaged.

Sensitive materials: plastic and ivory keys

Not all piano keys consist of the same material. Modern instruments usually have plastic keys, while older pianos or grand pianos may still have ivory keys. These react particularly sensitively to moisture and cleaning agents.

Material	Suitable cleaning	Recommended frequency	What to avoid?	Typical risks	Note
Plastic (modern)	Slightly damp cloth, mild soap solution if needed	Regularly, e.g. weekly	Abrasive cleaners, alcohol, solvents	Matting, streaks	Always wipe dry afterwards
Plastic (textured)	Soft cloth, minimally damp	As needed	Heavy rubbing	Glossy spots	Do not scrub selectively
Ivory (old)	Dry cloth, if necessary minimally moistened	Very sparingly	Excess water, chemicals	Cracks, swelling	Clean with particular care
Ivory (yellowed)	Gentle dry cleaning	Rarely	Bleach, home remedies	Permanent damage	Yellowing is often material-related
Imitation wood	Dry or slightly damp cloth	As needed	Wet cloths	Swelling	Strictly limit moisture
Special coatings	Observe manufacturer recommendation	Individually	Universal cleaner	Damaged surface	If in doubt, ask a specialist company

When in doubt, the rule is: better to be too careful than too thorough. Especially with ivory keys, incorrect cleaning can lead to cracks or permanent discoloration.

Yellowed piano keys – causes and realistic solutions

Yellowed piano keys are a common topic, especially with older instruments. The discoloration usually arises from UV light, aging of the material, or years of use.

Important to know: Not every yellowing can be completely removed.

Slight discolorations can be visually improved through regular cleaning and even exposure to light. Severe yellowing, however, is often material-related and can only be remedied through professional restoration or the replacement of individual keys. Aggressive home remedies or bleaching attempts should be absolutely avoided, as they can permanently damage the material.

Cleaning the piano surface

The surface of a piano is constantly exposed to environmental influences. Dust, fingerprints, fine scratches, or the effects of light can change the appearance over time. At the same time, pianos consist of sensitive lacquers that are not designed for conventional household cleaners. Gentle, regular care helps to protect the surface over the long term and maintain its original shine. The key factor is not so much the frequency, but rather the correct procedure.

Properly caring for black and lacquered pianos

Black pianos and lacquered surfaces look particularly elegant, but show even the smallest dust particles and fingerprints very clearly. For daily or weekly care, a soft, lint-free cloth is usually sufficient. Light dirt can be removed with a minimally dampened cloth. It is important to wipe evenly and without pressure. Heavy rubbing or circular movements can cause fine micro-scratches, which later appear as dull spots. After damp cleaning, the surface should always be wiped dry to avoid water stains or streaks.

Cleaning high-gloss surfaces – gentle and streak-free

High-gloss lacquers react particularly sensitively to incorrect care. Even small residues of water or cleaning agents can leave visible streaks.

It is best to carry out the cleaning in several gentle steps:

First remove dust dry
Minimally dampen a soft cloth
Wipe over a large area and without pressure
Finally polish with a dry cloth

Special high-gloss cleaners should only be used if they are explicitly suitable for pianos or sensitive lacquer surfaces.

Safely cleaning outer surfaces

Outer care includes not only the visible front, but also the side surfaces, lid, back panel, and music stand. Especially on edges and transitions, dust accumulates, which becomes harder to remove over a longer period of time. Regular, gentle cleaning prevents dirt from settling in crevices or causing scratches during later cleaning. Here too, the rule applies: it is better to clean lightly more often than rarely and too intensively.

Step-by-step instructions: Cleaning the piano surface correctly

With this simple procedure, the piano surface can be cleaned gently without damaging the lacquer or sensitive materials. The steps are suitable for regular care.

Carefully remove dust with a dry, soft cloth.
Minimally dampen a clean microfiber cloth with water.
Wipe the surface evenly and without pressure.
No circular movements, but rather calm strokes.
Then wipe down completely with a dry cloth.

This method is perfectly sufficient in most cases. The more gently the cleaning is done, the longer the surface remains free of streaks and fine scratches.

Cleaning the inside of the piano

Inside a piano, there are sensitive components such as the mechanism, felts, wooden parts, and strings. These react sensitively to moisture, touch, and improper cleaning. Therefore, cleaning the interior should always be done with particular restraint and remain limited to the bare essentials.

When interior cleaning makes sense

Careful interior cleaning can make sense if dust has visibly accumulated – for example, in the case of instruments that have not been used for a long time or stand open in the room. In such cases, dry methods like a soft brush or a dust blower can help to remove loose particles. No pressure should ever be exerted and no moisture should be used.

When you had better leave the interior cleaning to professionals

As soon as it comes to the mechanism, felts, or areas that are difficult to access, personal initiative is no longer recommended. Even small mistakes here can lead to malfunctions or permanent damage. In these cases, it makes sense to combine the cleaning with professional maintenance. Specialist companies have the necessary tools and experience to clean the piano safely and inspect it at the same time.

Step-by-step instructions: Cleaning the inside of the piano carefully

Interior cleaning should only be done if it is truly necessary. The goal is to remove loose dust without touching the mechanism or sensitive components.

Carefully open the piano lid and ensure there is sufficient light.
Remove loose dust particles with a soft brush or a dust blower.
Only clean freely accessible areas; do not disassemble anything.
Do not use any moisture and do not use any cleaning agents.
Carefully close the lid again after cleaning.

If there is uncertainty or if heavier dirt is visible, the interior cleaning should not be performed by yourself. In such cases, professional help is the safer choice.

Cleaning agents for the piano

Suitable cleaning agents for piano and grand piano

Home remedies: what works – and what causes harm

Cleaning a grand piano – observing special characteristics

A grand piano differs significantly from an upright piano in structure and surface. Due to its large, horizontal design, dust and dirt settle particularly quickly on the lid, side surfaces, and rim. At the same time, many grand pianos have a high-quality lacquer or high-gloss polished finish, making them more sensitive to incorrect cleaning. Therefore, special care is required when maintaining a grand piano – both in the choice of cleaning method and in the frequency.

Cleaning the grand piano case correctly

The grand piano case includes the lid, side walls, music stand, and the visible rim. These surfaces should be dusted regularly to avoid build-up and fine scratches. For basic cleaning, a soft, dry cloth is usually sufficient. For heavier dirt, a slightly dampened microfiber cloth can be used, which is always wiped dry afterwards. Dust accumulates especially on edges, hinges, and transitions, and should be removed gently without applying pressure or rubbing into crevices.

Cleaning large surfaces evenly

Due to the size of the grand piano, it is important to proceed systematically. If you only clean selectively, streaks or uneven glossy spots will quickly develop.

Divide the surface into larger sections
Wipe each section evenly
Turn or change the cloth regularly

This keeps the overall impression calm and even, without visible transitions.

Gently caring for high-gloss grand pianos

High-gloss grand pianos react particularly sensitively to moisture, fingerprints, and unsuitable cleaning agents. Even small residues can leave streaks or dull spots. A particularly restrained care routine is recommended here: first remove dust dry, then – if necessary – clean minimally damp and immediately polish dry afterwards. Special polishes or high-gloss cleaners should only be used very sparingly and exclusively with products suitable for them. When in doubt, less care is often the better care.

Treating the lid and inside correctly

If the grand piano lid is opened, the inside should also be carefully dusted. A dry, soft cloth is usually sufficient here. Moisture or cleaning agents have no place inside the grand piano lid, as they can cause long-term damage to the wood and lacquer. With calm, even cleaning, the grand piano not only remains visually appealing but also stays in good condition over the long term – without unnecessary wear or damage.

Common mistakes in piano cleaning

When cleaning a piano, many mistakes happen not out of negligence, but out of ignorance. However, sensitive materials in particular react quickly to the wrong agents or unsuitable methods. Anyone who knows these typical mistakes can avoid damage right from the start.

These mistakes you should avoid

Using all-purpose or glass cleaners on piano surfaces
Spraying cleaning agents directly onto the piano
Using wet cloths or too much water
Heavy rubbing or scrubbing when dealing with dirt
Using alcohol or solvents on keys or lacquer
Allowing moisture to get between the piano keys
Cleaning the internal mechanism without technical expertise
Removing dust with rough or dirty cloths
Treating yellowed keys with bleaching agents
Carrying out cleaning too rarely or only when heavily soiled

Gentle, regular care is always better than rare, intensive cleaning actions. With a little restraint and the right techniques, your piano will remain well-maintained, functional, and visually appealing over the long term.

Conclusion

Regular and gentle cleaning contributes significantly to ensuring that a piano or grand piano looks good for a long time and remains reliably playable. With the right methods, keys, surfaces, and cases can be maintained without damaging sensitive materials or the mechanism. Anyone who wants to preserve their instrument in the long term benefits not only from careful care but also from professional guidance.

Suitable offers for piano lessons in Switzerland can be found, among others, in the following regions: