Climate-control temperature FX

[Bill Spurlock, RPT]

>From Kent Swafford:
>      When I come to a piano with a climate control system, I first
 >determine which components (dehumidifier/humidifier) are present and
 >which component is presently operating.  If the dehumidifier rod is
 >operating, I use an extension cord, which I carry for just this
 >purpose, to plug the dehumidifier directly into the AC, bypassing the
 >humidistat.  This insures that the rod will stay on during the entire
 >tuning.

>When I find a humidifier operating, I
 >simply unplug the dehumidifier from the humidistat, insuring that it
 >cannot come on during the tuning.

Thanks for your input Kent. As usual your solution is logical and clear. I'll
start using the same procedures right away. I agree that the little extra time
involved is well spent. Each incremental thing we can do to improve the
stability of our tunings is important, whether it's seating strings, tightening
plate bolts, or taking room humidity into account when deciding whether (or how
much) to adjust pitch. Locking the D-C system in one mode while tuning will
eliminate one more variable from my end result. Thanks for the tip!

Bill Spurlock