This is a handy gadget to let you know what your chiller is up to in this hot weather...

http://www.ebay.co.uk/itm/NEW-TIMEX-Large-display-Indoor-Outdoor-Thermometer-Hygrometer-and-Clock-TX5170-/111110648187?pt=UK_Home_Garden_Weather_Stations&ha sh=item19deb5f17b