Is there a way to make a tuning last longer, so the piano needs less frequent tuning?
Yes. By installing a humidity control system known as a Piano Life Saver (Dampp-Chaser), you can maintain your piano’s soundboard at an ideal 42% relative humidity. This will keep the piano in tune longer, and prolong the life span of the piano because it will not be subjected to damaging humidity changes. My piano has a Piano Life Saver system, and I would not own a piano without one installed. It’s worth every penny, and easily pays for itself in the long run.