Cleaning the outside cabinet of a piano can be done by the customer, but cleaning the soundboard, under the strings, around the tuning pins, and inside the action can only be done by a professional. You will enjoy a clean piano after it has been cleaned by a professional.
Piano cleaning involves:
Blowing out the dust with a compressor.
Pulling the action and blowing dust from action and keybed.
Wiping down the outside cabinet.
The cost of cleaning will vary from $95.00 to $350 depending on the size and time needed to clean the piano.