Black Market Pianos now HC's

[Farrell]

If both heating systems raise the temperature the same amount, and neither 
one removes water from the air, seems to me the change in RH would be the 
same with either heating system. Perhaps it is in part related to maybe 
central heat blowing air into more places more effectively, etc. And maybe 
Americans do not practice energy conservation (crank the heat up higher - 
and thus lower RH more) as well as the Japanese. However, I believe it is 
true that there are areas of the North American continent that are much 
drier than Japan, and also colder - such that there is a larger drop in 
living space RH when the heat is turned up. So I'd have to say that at least 
in part, climate is a factor.

Terry Farrell

----- Original Message ----- 
> The story I've heard is that in the US central heat is ubiquitous where
> in the rest of the world it is not.  Central heat dries the air in homes
> more than space heaters regardless of the outside humidity so pianos
> made for the US are made for a drier environment not drier climate.
>
> dp
>
> David M. Porritt
> dporritt at smu.edu