Hi Lim, After working in Darwin for 2 decades I will say wrong wrong wrong. Anywere that there is high humidity there are also periods of low humidity. Both rods have been installed in "hopefully closed areas" and when the humidity drops down to say 40% you can assume that these rods are going to reduce the effective humidity level down to about 25% causing the action to become loose and the soundboard to dry out to lower than it should be. Even fitting a humidistat to near the soundboard will not stop the action from cooking. One way only to do it properly, full climate control system with under cover under the soundboard, keep thr lid closed and close the key fall when not in use. Tony Tony Caught acaught at internode.on.net -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of limhseng at gmail.com Sent: Tuesday, 23 November 2010 3:08 PM To: pianotech at ptg.org Subject: [pianotech] Dehumidifier rods Hi list Attached 2 pics of heater rods(15watts) in a grand piano. The heater on the soundboard according to the tech that installed it helps to prevent rust. The other rod in the action cavity is the standard installation in our hot and humid climate. Its on 24/7. Your views pls. Thanks! Lim Sent from my BlackBerry Wireless Handheld Powered by Gee! from StarHub
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