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  • I'm a long way off doing anything, but is there any chance of innovations that can make use of existing water tanks for new HP installations? Like many people I've got an old disused water tank in the loft that I've considered cutting up and removing over the years but not got around to it. Current system is a combi. I'd love to be able to make use of the old tank somehow, give it a woolly jumper and connect it to a new system ...

  • Nah Heatpumps all use unvented cylinders, the system is pressurised so the tanks in the loft are redundant.

  • Even if you could, you wouldn’t want to. Heat pumps work best with ‘special’ cylinders with a high coil surface area that increases efficiency and speeds up recharge times at lower flow temps.

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