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#1542777 - 10/25/10 12:37 AM Room temperature vs Imperial
Kraver Offline
Full Member

Registered: 10/11/10
Posts: 121
Loc: Chandler Arizona
In the summer, my house stays 78 degrees. In winter, we have the heat set to 73. When we go on vacation during the summer, we raise the temperature to 84. Are these reasonable temperatures for our Imperial?
_________________________
-- Chuck
Chandler AZ

1918 Steinway Grand W1597 192692 w/o the player (6' 2" case 5' 7" M length strings) (piano loft) ("16/9.J" and "3483" means?)
1975 Yamaha Upright 48" U1H 1948237 (piano room)
2008 Bosendorfer Imperial 290 48852 (great room)
<=1945 Moutrie Upright/Coffin 113 11709 (Shanghai condo)

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#1542779 - 10/25/10 12:43 AM Re: Room temperature vs Imperial [Re: Kraver]
Carey Offline
6000 Post Club Member

Registered: 05/13/05
Posts: 6828
Loc: Phoenix, Arizona
Originally Posted By: Kraver
In the summer, my house stays 78 degrees. In winter, we have the heat set to 73. When we go on vacation during the summer, we raise the temperature to 84. Are these reasonable temperatures for our Imperial?


Chuck -

Those same temps here in Phoenix certainly haven't hurt my Mason and Hamlin - or the Young Chang I owned prior to that. But perhaps an Imperial is a slightly different animal ??? smile

I believe that fluctuations in humidity are more of a concern than moderate fluctuations in temperature.



Edited by carey (10/25/10 02:56 AM)
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#1542809 - 10/25/10 02:10 AM Re: Room temperature vs Imperial [Re: Kraver]
liszt85 Offline
3000 Post Club Member

Registered: 08/26/08
Posts: 3159
Originally Posted By: Kraver
When we go on vacation during the summer, we raise the temperature to 84. Are these reasonable temperatures for our Imperial?


Why don't you let me baby sit your piano(s) when you're away on vacation during the summer? :P Since I'm a grad student, I can do my research from "home" when not enrolled in classes (which is the case during the summer). I'm allowed to dream, am I not? :P
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#1542814 - 10/25/10 02:19 AM Re: Room temperature vs Imperial [Re: Kraver]
BDB Online   content
Yikes! 10000 Post Club Member

Registered: 06/07/03
Posts: 22697
Loc: Oakland
You really need a local technician who can tell you what to expect in your area. If yours cannot, find one who can.
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#1542860 - 10/25/10 04:28 AM Re: Room temperature vs Imperial [Re: Kraver]
Dave Horne Offline
5000 Post Club Member

Registered: 07/07/04
Posts: 5293
Loc: Vught, The Netherlands
Originally Posted By: Kraver
In the summer, my house stays 78 degrees. In winter, we have the heat set to 73. When we go on vacation during the summer, we raise the temperature to 84. Are these reasonable temperatures for our Imperial?


Just like frequency response without deviation from 0db stated is meaningless for speakers, temperature without humidity stated is meaningless for pianos.
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#1543094 - 10/25/10 12:51 PM Re: Room temperature vs Imperial [Re: Dave Horne]
Cy Shuster, RPT Offline
3000 Post Club Member

Registered: 12/18/05
Posts: 3458
Loc: Albuquerque, NM
Originally Posted By: Dave Horne
Originally Posted By: Kraver
In the summer, my house stays 78 degrees. In winter, we have the heat set to 73. When we go on vacation during the summer, we raise the temperature to 84. Are these reasonable temperatures for our Imperial?


Just like frequency response without deviation from 0db stated is meaningless for speakers, temperature without humidity stated is meaningless for pianos.


Absolutely. In the Southwest, it's common to have evaporative cooling. I've measured relative humidity as high as 70% indoors with them running. A/C doesn't add humidity, nor does it remove it much.

To protect a piano of that value, you should invest $50 in a humidity gauge with high/low readings. Also, ask your tuner to measure and record the pitch of A4 (at least) to see how your piano is responding. When it's humid, it will go sharp; when dry, it goes flat. It's possible to measure and quantify these effects before damage occurs (see my Facebook page for examples).

--Cy--
_________________________
Cy Shuster, RPT
www.shusterpiano.com
Albuquerque, New Mexico
Director, PTG Norfolk 2016 Technical Institute
http://convention.ptg.org

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#1543319 - 10/25/10 05:30 PM Re: Room temperature vs Imperial [Re: Kraver]
Kraver Offline
Full Member

Registered: 10/11/10
Posts: 121
Loc: Chandler Arizona
Evaporative cooling is rare in new homes. We have normal AC. Assuming I get a whole room or whole home humidity control system, will 84 degrees be OK for a month at a stretch? What is the highest temp you would recommend for 1 month straight?
_________________________
-- Chuck
Chandler AZ

1918 Steinway Grand W1597 192692 w/o the player (6' 2" case 5' 7" M length strings) (piano loft) ("16/9.J" and "3483" means?)
1975 Yamaha Upright 48" U1H 1948237 (piano room)
2008 Bosendorfer Imperial 290 48852 (great room)
<=1945 Moutrie Upright/Coffin 113 11709 (Shanghai condo)

Top
#1543327 - 10/25/10 05:44 PM Re: Room temperature vs Imperial [Re: Kraver]
Dave Horne Offline
5000 Post Club Member

Registered: 07/07/04
Posts: 5293
Loc: Vught, The Netherlands
Originally Posted By: Kraver
Evaporative cooling is rare in new homes. We have normal AC. Assuming I get a whole room or whole home humidity control system, will 84 degrees be OK for a month at a stretch? What is the highest temp you would recommend for 1 month straight?


Provided the humidity is between 30 and 50 percent ... or something close to that and relatively consistent, you should be OK.

When I owned my C3 I bought two professional thermometers and would perform a wet bulb humidity measurement. I did that for a few weeks and then retired the thermometers. It seemed anal after a while to check the humidity level.

I had a deal where my piano was tuned four, five, six times a year and taking humidity measurements daily seemed excessive. If the room temperature and humidity were acceptable for me I assumed the piano concurred.
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mp3\wav files

AvantGrand N3, CP5

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#1543570 - 10/25/10 11:32 PM Re: Room temperature vs Imperial [Re: Dave Horne]
Cy Shuster, RPT Offline
3000 Post Club Member

Registered: 12/18/05
Posts: 3458
Loc: Albuquerque, NM
I second what Dave says. I wouldn't go nuts -- many other things in your home might not like 90 degrees for a month. I've had friends in AZ whose candles melted...

But the point is that humidity is the key factor, and it's relative humidity, meaning relative to the maximum the air can hold at that temperature.

If you sealed your house air-tight at 50% Relative Humidity (RH) at 72 degrees, and then raised the temperature to 84 degrees, the RH would drop significantly, because warmer air has a higher capacity to hold moisture. You might have to add gallons and gallons of water to hold the RH within range at a high temperature.

Pianos and everything made of wood likes to be between 40% and 60% RH, so you still need to buy a hygrometer to measure indoor humidity.

Here's what the Smithsonian has to say on this:

http://www.si.edu/mci/english/learn_more/taking_care/biodetwood.html

--Cy--
_________________________
Cy Shuster, RPT
www.shusterpiano.com
Albuquerque, New Mexico
Director, PTG Norfolk 2016 Technical Institute
http://convention.ptg.org

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