bob haller wrote:

carpet will feel warmer but, in a non AC space it may develop a odor /
mold. from presence of excess moisture

I do have heat in that area. As part of this project, I installed two new
heaters, one for each level, but I only installed a/c for the upper level.

Carpet certainly does have a percieved warmer feel, but my question is, will
the moderating effect that masonry has on actual temperature and rate of
temperature change, be negated by installing carpet.

Kevin.