The AC dies. The fans stop. This is the final boss of summer survival. Immediately fill your bathtub with cold water (you can soak a sheet in it to wrap around yourself). Move to the lowest floor of your house (heat rises). Put aluminum foil on the windows (reflects the heat back out). And go to a movie theater or a public library. Those places have generators and air conditioning funded by your tax dollars. Use them.
Before you walk out the door (or decide to hide under your bed), run through this mental checklist: Surviving Summer
: These products are formulated for those losing significant electrolytes through "prolonged, strenuous exercise". The AC dies