I have an AC window unit, haven't installed it, so I have the same wonderful experience. Even though I don't use a chiller my tank sump temp fluctuates from 77 - 80 during the day (I don't keep a thermometer currently in the display tank.
Also been busy, but hoping to rework my main tank/stand/setup here pretty soon. Still need to find a glass 4 x 2 x 2 tank with no overflows built in that is close enough I can go pick it up and not have it shipped.