Bummer day. A nearby lightning strike yesterday afternoon did some electrical damage, including frying the low-voltage transformer in the furnace and a circuit board there, which in turn feeds the low voltage to the A/C. Hopefully anything downstream from that will be under warranty since the A/C is only a year old. It also flipped a four circuit breakers, burned out some light bulbs, fried a smoke detector and worst of all fried some part of my computer, which gave a "keyboard error" when I turned it back on. Nothing wrong with the keyboard since that's the one I'm using now. All this despite having a whole-house surge protector and a UPS with surge protection on the computer by itself. At least the refrigerator survived.