How Often Should a Piano Be Tuned?

This is one of the most common questions piano owners ask — and the most common answer (twice a year) is right most of the time, but not the whole story.

How often a piano needs tuning depends on several factors: the instrument’s age and condition, the stability of its environment, how much it’s played, and how sensitive your ears are to pitch drift. Here’s what you actually need to know.

The Standard Recommendation: Twice Per Year

The Piano Technicians Guild and most professional piano technicians recommend tuning a piano twice per year for normal use. This aligns with seasonal changes — once in the fall as central heating comes on and drops indoor humidity, and once in the spring as humidity rises again.

The twice-yearly schedule works for most home pianos in typical conditions. It keeps the instrument close to standard pitch (A440), prevents excessive drift, and maintains the string tension within a range that preserves the soundboard and overall structure.

If you’ve been doing this consistently, your piano will likely be in reasonable shape when the tuner arrives and won’t need a pitch raise — just a regular tuning.

Why Pianos Go Out of Tune

Understanding why a piano goes out of tune helps you make better decisions about how often to service it.

Humidity Changes

This is the primary driver of pitch drift for most pianos.

Piano soundboards are made of spruce — a wood that expands when it absorbs moisture and contracts when it dries out. The soundboard sits in the “belly” of the piano, pressing upward against the strings. When it expands in humid weather, it pushes more firmly against the strings, increasing tension and raising pitch. When it contracts in dry weather, tension decreases and pitch drops.

This cycle happens every season — and can happen more dramatically in climates with extreme seasonal swings or in homes with forced-air heating that sharply lowers indoor humidity in winter.

Indoor humidity stability is the single biggest factor in tuning stability. A piano in a climate-controlled room with consistent humidity will hold its tuning significantly longer than one near a heating vent in a dry Minnesota winter.

String Stretching and Settling

When a piano is new — or after new strings are installed — the strings stretch slightly during the first few years of use. This is normal metallurgy: strings under tension slowly creep. New pianos often need tuning more frequently (three or four times in the first year) until the strings stabilize.

Use and Vibration

Playing the piano causes vibration throughout the instrument, including at the tuning pins. Heavy, forceful playing can cause pins to shift slightly, particularly in older pianos with worn pinblocks. Hard use accelerates drift.

Time and Gravity

Even a piano that’s never played will slowly go out of tune, simply due to the physics of metal under tension over time.

When You Should Tune More Often Than Twice a Year

Every 3-4 months:

If the piano is used professionally — students practice on it, it’s used for lessons, performances, or recording
If you or your students are sensitive to pitch — musicians with trained ears will notice drift before most people would
If the piano is in a particularly unstable environment — rooms with wide humidity swings, near doors to the outside, in climates with extreme seasonal changes

4-6 times per year:

Concert and performance instruments — institutional pianos used for concerts are often tuned before every major event
Recording studios — a piano used for studio recording may be tuned at the start of every session
Piano schools and conservatories — teaching instruments with heavy student use benefit from more frequent tuning

When Once Per Year May Be Sufficient

For a piano that is:

Rarely played (seasonal use, background instrument in a space)
In a very stable environment (climate-controlled, consistent humidity)
In good overall condition (well-maintained instrument, stable pinblock)

…once per year may be adequate to keep it in playable shape, though twice is still the safer default.

Important: if a piano is unplayed, it still drifts over time. A piano left untouched for two or three years will almost certainly need a pitch raise before a proper fine tuning can be done.

After Moving a Piano

A piano that has been moved should be allowed to acclimate to its new environment for 2-4 weeks before tuning. Moving introduces temperature and humidity changes; the instrument needs time to settle.

After the settling period, have it tuned. Then maintain your regular schedule from that point forward.

What Happens If You Wait Too Long

A piano that hasn’t been tuned in 2+ years will typically be flat — sometimes significantly so. When pitch drops far enough below A440, a standard tuning session isn’t enough. The tuner will need to do a pitch raise first (a rough all-strings-up pass to bring the tension near standard), then return for a fine tuning after the strings settle.

This adds cost and time. The piano may also not hold the tuning as well immediately after a pitch raise — it’s only after the strings have stabilized at the new tension that a truly stable fine tuning is possible.

The practical lesson: regular twice-yearly tuning is almost always cheaper and more effective in the long run than letting the piano drift and paying for pitch raises.

How to Know When YOUR Piano Needs Tuning

The blunt answer: most people can’t reliably tell if their piano is out of tune, because they hear it every day and habituate to the drift.

More reliable methods:

Keep a schedule and don’t rely on your ears alone to decide when to call the tuner
Reference a reliable in-tune source (a piano app, a tuned digital piano) and compare
Ask a musician friend with good ears to play it
If notes are sounding noticeably “wavery” or “wobbly” (you’re hearing slow beating), it’s likely overdue

The professional recommendation is simple: tune it on a schedule, not by feel. A twice-yearly maintenance schedule prevents problems instead of reacting to them.

A Word About Electronic Tuning Devices (ETDs) and Tuning Apps

Various smartphone apps claim to let you check your piano’s tuning or even tune it yourself. For casual pitch-checking, these can give a rough indication. But they’re not a substitute for professional service, and they can’t replicate the ear-based judgment of an experienced technician.

More importantly, checking pitch with an app only tells you about individual notes — not about the overall balance and temperament of the piano, which is what a professional tuning actually addresses.

Piano Humidity Control Systems

If you’re serious about piano health, a humidity control system (like the Dampp-Chaser Piano Life Saver system) installed inside the piano is one of the best investments you can make. It maintains a consistent internal humidity regardless of the room conditions, dramatically reducing pitch drift and protecting the soundboard, bridges, and pinblock from moisture damage.

These systems are installed by a piano technician and require occasional refilling of the humidifier reservoir. For owners who care about long-term piano health, they’re genuinely worth the investment.

The Bottom Line

For most home pianos in typical conditions: tune twice per year. Once in fall, once in spring. Don’t skip years. Don’t wait until it sounds bad.

For professional or institutional instruments: more frequently, depending on use.

If it’s been more than two years since your piano was tuned: call a technician and expect to discuss a pitch raise.

Learning to Tune It Yourself?

Some piano owners become curious about learning to tune their own piano — and that’s a legitimate path. Aural tuning is a learnable skill, though it takes real time and practice to develop properly.

88 Lessons is a free daily podcast designed to take complete beginners from zero experience to a working foundation in aural piano tuning over 90 days. If you’ve ever been curious about what’s actually happening when a technician tunes your piano, it’s a fascinating journey.

Start with Lesson 1 — it releases every day.