How long does it take to tune a piano?

The length and level of complication of the piano tuning process can vary depending on how long ago the piano was last tuned, as well as other factors such as the overall condition of the piano and any repairs that may be needed. Here are some examples:

1. Routine Tuning: If a piano has been regularly tuned within the last six months to a year and is in good condition, the tuning process may be relatively straightforward and take around one to two hours.

2. Pitch Raise: If a piano has not been tuned in several years, its strings may have fallen significantly out of tune, and a pitch raise may be necessary. A pitch raise is a more complex process that involves gradually tightening the strings over multiple tunings until they reach the correct tension. This process can take several hours or even multiple sessions over several days. 

3. Repairs Needed: If a piano has broken or worn components, such as strings, tuning pins, or hammers, these will need to be repaired or replaced before tuning can be done. This will add time and complexity to the tuning process, and the length will depend on the extent of the repairs needed.
   
   

4. Climate Factors: The climate in which the piano is located can also affect the tuning process. For example, a piano located in a humid environment may require more frequent tuning and adjustments than one located in a dry environment.

In summary, the length and complexity of the piano tuning process can vary depending on several factors, including the piano's condition, how long ago it was last tuned, and the climate in which it is located.