No heat pump fitter of a sane mind would/should fit a heat pump without significant buffer storage… | by Bombinho | Medium
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BombinhoFollow1 min read·May 27, 2021 --
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No heat pump fitter of a sane mind would/should fit a heat pump without significant buffer storage (Although some consider the concrete slab as sufficient, if big enough). Very small
storages typically range from 200l, that is enough to bridge those 3h in winter time.
My storage is 330l and I can, even on the coldest days, bridge 4h. I am planning currently to add a small ground source heat pump in order to have a higher heat input. But with the current
prices running the heat pump costs me notably more per day now than I paid at the end of the winter for a day, despite using less than half (being on Agile).
It seems a little stuck with people that you have to store electricity in batteries. But it does not make sense to store electricity, which is then transformed into heat, in batteries. Heat
can be stored very inexpensive and in large amounts very safely (Many households actually do have hotwater cylinders ;).
But be aware, those 3h to bridge are typically among the warmest hours of the day, not using them will likely impact the efficiency of an air source heat pump.