Where is the best place for my piano?
A piano doesn't like being too cold or too hot. The environment will affect a pianos tuning, so avoid placing them where this may be an issue i.e. avoid draughts if possible, keep away from windows, radiators & other sources of heat. A constant temperature around 18°C to 21°C (65°F to 70°F) is ideal. Central heating dry's the air, drawing moisture from the wooden components in the piano.
When the heating is turned off at night the humidity in the room rises, then when turned on in the morning, the humidity drops. These changes in relative humidity causes the wood in the piano to shrink and expand. Changes to humidity in a room where the piano is stored are often responsible for tuning instability and other serious problems, such as loose tuning pins, split soundboard's and regulation issues. Ideally, you should try to keep your piano within 45 - 60 per cent relative humidity.
If you feel that your piano is in an unsuitable environment you should think about purchasing either a humidifier to counteract excess dryness or a dehumidifier for excess dampness. Your piano tuner will be able to advise you on this.