There's way too much being made about this.
After running around in the heat and Florida humidity, any air conditioning will feel significantly cooler than outside.
Drop it down a few degrees more than they normally would, and add in some context clues (snow, fake frost, etc), and BAM! You have what people perceive as a "cold" house.
It's all illusion and tricking your mind. That's what the HHN team does.