You're the only one so stupid that you cant manage to
work out that the primary system is perfectly adequate to
keep the temps even if it can do that without any setback

So the primary one is sized for the design heat loss and then is
grossly oversized for cooling. Give up rookie.

Or do you still have the dual systems with backdraft dampers plus the
incremental ductless split in lieu of a pot belly stove. Remember,
sound out the big words and think before you post.

You are the most pathetic troll I have seen but at least you are
effective at getting me to feed you.