I have a residential building that needs to be modeled with window
shading on the south side. When I input the shading 24" to each window
on the south side of the building my heating during winter and the pumps
results every month are increased and the shading doesn't help at all.
This doesn't make any sense to me. In the winter time on the south side
during summer the shading should help after theory. In the winter should
help too because the sun will heat the windows and heat up the spaces.

Any help would be appreciated.

Thank you.

Crina Bosch