[QUOTE] [QUOTE="Ace"] Ideally, it wants to be nice and sunny for the next few days[1], so the pool can get back up to temperature. It was down to 24C yesterday, FFS.[/QUOTE] I don't mind a cold pool. [QUOTE] Must get the heating plumbed in soon...[/QUOTE] Over here the pools have devices to cool the water.[/QUOTE] Aye, some friends have just sold a house in SA where they had solar panels to heat the water, or more often run in reverse to cool it overnight. Ours did get over 30C a coupld of weeks back, which was verging on the too hot. Dunno if the heat exchanger to the central heating could work in reverse in a similar way...