I’m told that many heat pumps nowadays can reach water- heating temps of around 65deg required to ‘charge’ a heat battery, ie to bring about the ‘melting’ of the phase-change material in the battery. Does anyone have experience of this? Understand it would push down the COP. (We have no space for a water cylinder. )
Are you sure you need a phase change device? See
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That puts a different view on things- I’ll look into this, it sounds convincing. Was going to book in an ASHP survey/quote with hHeat Geek, but I could try this new cylinder with our existing combi boiler…thanks. Is its main advantage that it uses already-tepid/warm water to be heated by the the coil?
As far as I’m concerned its main advantage is its size. Which advantage is “main” to you is really a personal choice. However, it is a long time since a DHW cylinder has been designed from basics rather than as an evolutionary step from what was already there, so it does have several advantages.
Is this Heat Geek Mini Store a solution for overcoming the issue of having to run the tap for a while until the water is hot enough for washing in the kitchen sink, the shower and the bathroom washbasin? I’m thinking that this might be possible to install this in the space I have beside the bath/Shower right next to the bathroom washbasin and directly above the kitchen sink?
I already have a Tepeo Boiler connected to the HWC as well as have Solar Thermal Panels connected to the HWC
Short answer: yes
Long answer: it depends.
I had contemplated putting one of these in the kitchen cupboard vacated by my boiler but Mrs G has found another use for it. If you have room for multiple hot water storage then you can seriously reduce pipe runs and their associated heat losses but the cost of doing so is quite high.
Recently I have read of several Passivhaus’s that have water heating at the tap to avoid storage losses and associated space heat gains.