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Joined: Feb 2021
Posts: 5
T
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T
Joined: Feb 2021
Posts: 5
Hello again. I appreciate everyone's advice on my last thread. I was able to get the U3 I really wanted and just moved it into my home yesterday. Since I am very new to owning a piano I am a bit skittish when I look at temp/humidity and what the piano is supposed to have and what my apartment actually is. I am considering a Dampp-Chaser System, but I am not sure if it is the correct decision either. I will give the specifics of my environment and any suggestions are appreciated.

I live in Hawaii, but I am in a fully climate-controlled space, 24/7. I have central AC and it maintains about 24-25c (75f) for my home as a whole. I bought a hygrometer to measure the RH of my place and from it has shown me the past few days is that it fluctuates between 38-42% depending on the time of day I assume.

From everything I've read it seems like a piano really should be between 50-60% RH, which is why I was thinking of a Dampp-Chaser system. There is a dehumidifier in the piano already, but I have not plugged it in as it would make my low RH issue worse (correct?). Will a ~40% RH be ok for the piano because it is stable %, or should I invest in a humidifier (either internal or external)?

Thank you

Joined: Jun 2005
Posts: 1,294
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Posts: 1,294
Pianos should be 40-46%, depending who you talk to. I’m in the 42% camp.

I personally use a Dampp-Chaser as a supplement to humidity control in my piano room. People here have mixed opinions on using one.

Then there is the reality. At our old house, I had 46% (compromise with the guitars) year round. But at the new house, if it gets above 38% in the dead of winter in Minnesota, mold grows on the windows. My piano shows no issues at that lower level, so it’s been around 34-36% and my piano seems to actually prefer it.

You can control your room however you want, but based on what you said, I don’t think you need to even worry about it at all. (50-60% is too high, though.)

Humidity too high causes felts and wood to absorb moisture and swell, corrosion on metal parts and strings, sticky keys, etc. Too low causes cracks and loose pins after many years. But it doesn’t have to be exact, and different pianos respond differently.

Pianos survived hundred(s) of years without home climate control. Maybe they didn’t last as long or sound as good, though!


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