On Jan 11, 2011, at 10:58 PM, Keith Roberts wrote: > The reality is; this costs more to install. More codes, more money. > You need to get the powers that be to fork out the money It would certainly cost somewhat more to install: some form of misting system (turning water into water vapor) and humidistat. But a basic unit to maintain a lower level of, say, 30% RH +or - 7% would be a negligible cost compared to the whole project of a new HVAC or renovation of an old one. At least I am pretty certain this is the case. Also inexpensive to run. Which is why I keep harping on the idea. Lowering high RH is quite expensive. Maintaining a tight parameter is quite expensive. But if we can find a relatively inexpensive alternative, that isn't ideal but makes a considerable improvement, we will all be way ahead. There are other benefits besides piano tuning stability: reduced static electric problems (electronics issues), human health, etc. Regards, Fred Sturm fssturm at unm.edu "I am only interested in music that is better than it can be played." Schnabel
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