Frank,

You designed this building and nmade a serious error when designing the
heating and cooling. You now wish to correct this error. You claim to have
an engineering background.
Ok, it doesn't work, you do not seem to have much knowledge about heating
and cooling, and you want it fixed. Your options are to hire someone
knowledgeable (a civil engineer) or head to the library. If you hire an
engineer, expect him to visit the building. You will not get good advice
without such a visit so internet advice won't be much help.

Dave M.
"