We have an 11 year old U1 which may (or may not) be very sensitive to humidity levels in our house. We are currently investigating this issue.
Based on the outcome of the tests we are doing, we will either A) Have to replace the piano (which the dealer has a replacement arriving any time now) or buy a damp chaser system.
I have now played many U1's and they all sound so different. I love the sound of our piano and want to persevere to solve the problem but it's no good if it cannot hold its tune for more than 4 hours

grrrrrrr
The replacment piano might hold it's tune but we might not like the touch and tone. It's an annoying situation.
So if anyone is interested in the Damp Chaser system, they are welcome to see how we get on with it if we go down that route. Big sigh....
QUOTE(John451 @ Feb 15 2010, 01:07 PM)

However these systems need to be installed by approved agents and I think I saw a cost of about £600 (I might be wrong there).
I have been quoted £375 fitted by an authorised technician
QUOTE(John451 @ Feb 15 2010, 01:07 PM)

Otherwise I will probably use a humidifier with humidistat control in winter.
We currently have one running. The sensor on the humidifier maintains 60% humidity, whilst my other Hydrometer thinks its 15% lower. Who knows what my actual humidity is, all I know is that it can drop as low as 25% in the winter and be over 60% in the summer.
Incidentally the problems with our piano only started occurring as autumn set in and possibly when the humidity dropped (as we hadn't put the heating on.) It was fine for the first 3 months (during summer)!