Perfect environment for a grand

[Bob]

What would this be?

You would have to be able to control humidty and temperature and keep those constant.

[G.Fiore]

 are you asking a question?

[Glyptodont]

Ours is not near a heating or cooling register, and in a place where sun never touches it.   Our home has thermostat-controlled heating and cooling. 

A couple of other considerations.  You need to consider the acoustics of the home.  Where will the grand sound good, and where will it not sound good?  A mid-sized grand, I would imagine, should be placed in a large room like the living room.   I realize that universities will put grands in small practice rooms or lesson rooms, but I personally think this is far from ideal. 

One thing many people only realize when the grand is to be placed in the home--

A grand must be placed so the right side is facing out into the room.

When you put the lid on high stick, the open piano must face into the room.  Otherwise it looks like heck.  Obvious, but sometime not immediately appreciated.

So these considerations will affect your placement.

[texas911]

An art museum. But who can play it there. For practical reasons, having one in a home will afford you now opportunity for a "perfect" setting for a grand. Just live with it and enjoy.

[c18cont]

This has been subjected several times, and I recall disagreement...,

I like hum. at about 70% as it is easy to keep with a heat pump and a single de-humid. for my location...Florida...and it allows the temp to be more constant at about 72..year round .(as we do NOT like it cold or too hot...)

There has always been  a piano of some kind since I built the house w/HP 20 yrs ago, and I never have much trouble between tunings...But most auth. give a figure more between 40 to 60 or so for Humid...as I recall.

John