You need to know what the RH range of the pianos environement is. If you don't know, you need to monitor it. If the RH drops below about 35% and/or exceeds 50 or 60% RH, then yes, the piano will benefit from a complete DC system. BTW, are the pianos turned off the other ten months? Terry Farrell ----- Original Message ----- SNIP....... do pianos in the northeast in camps that are open only two months a year need dmap chasers, although the summer weather is humid? The Steinway I tuned already has a heating bar installed under the soundboard. Does it need a complete system? Wayne Williams Perfectpitch Technology Schroon Lake, NY -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20070727/9d39b481/attachment.html
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