Even when the A/C was working, the West side of the house (the kitchen/family room) was always hot. With the evening sun pounding on the many windows, and not enough vents in that area, the A/C just couldn't keep up. As it attempted, our bedroom (on the East side) would get pretty chilly ... which was actually okay with me, especially at night (I like to cuddle in my blankets).
I remember being pregnant with one of the boys (probably Cooper) when the A/C wasn't working. Gray came home from work to find me outside sitting in a small patch of shade, looking miserable. He went out and bought a portable air conditioner and set it up in our room, so at least there was ONE place to escape the heat in the house.
That portable air conditioner moved out into the family room when the house one was back up and running. Just a little extra push in that area. The kids would often come in from outside and stand right in front of the machine. After several years of use and abuse, we replaced it with another portable unit.
A couple years ago ... we replaced the house unit and had additional vents placed in the kitchen and family room area. It's been pretty effective. The only drawback was now our bedroom doesn't turn into an ice box ... it's one of the warmer rooms now. I have to turn the thermostat way down to get our room cool. Mornings (as the sun comes up and hits the house are the worst. I like our Nest thermostat, so I can adjust it from my bed without getting up).
Keaton's new bedroom (also on the East side) suffers from the morning sun too. It's HOT on summer mornings! With the portable A/C not in use in the family room, we went ahead and set it up in Keaton's room. He had to move things around to make it work, but we actually like the new arrangement better.
Now the boy is jumping for joy in his COOL room ...