The pump for the 2nd-floor solar has died, not a big deal in itself. But. The bloke from the pool shop reckons I need a pump specifically built with solar in mind, something about heat-resistant parts. The old one is a Davey Power Ace 150 (not 150CR), and is probably 15 years old and has been running just the solar (it has its own inlets).
Is there any truth in that? Apart from it not seeming very likely that very hot water is going to be sucked back down from the roof, will any standard pool pump handle it?