Experiences with brine heat pump

I have been running a brine heat pump very efficiently for about 7 years without an additional buffer. The screed has a multiple of the heat capacity of a small buffer, so you really don’t need one. The indoor temperature fluctuates during the heating season (even without [ERR]!) by only about 0.5°C at most.

A brine heat pump has been running very efficiently for me for about 7 years without an additional buffer. The screed mass has a multiple of the heat capacity of a small buffer, so you really don't need one. The indoor temperature fluctuates during the heating season (even without ERR!) by only about 0.5°C at most.

Well. Well, an ERR is rather responsible for temperature fluctuations, right? That's why you should get rid of the ERR ;)

Good. Well, an ERR is more responsible for temperature fluctuations, right? That's why you have it removed ;)

Do you know someone who managed that? Serious question. I keep reading it, but I haven't read about anyone who was actually able to do it.

Should one do without a buffer tank in a brine heat pump?

Definitely.

and is a high-performance storage tank with two double smooth tube heat exchangers, e.g. from SHWT, practically sufficient?

Depends on how much hot drinking water you need.

Buffer tanks and drinking water tanks have nothing to do with each other.

Do you know anyone who managed that? Seriously asking.

Yep. I didn’t install any with my heating system myself. The energy consultant has no objections, KfW doesn’t ask ;-)

Good. Well, an ERR is more responsible for temperature fluctuations, right? That's why you should get rid of the ERR ;)

However, there are quite a few construction/heating companies that "impose" this on you (because it's easier than planning/setting it properly => "as long as it's warm").
If necessary, an already installed EER can also be "turned off".

Should you do without a buffer tank with a brine heat pump and is practically a high-performance storage tank with two double smooth tube heat exchangers, e.g. from SHWT, sufficient?

Definitely leave out the buffer, as well as any hydraulic switches or other nonsense. With the domestic hot water tank, you can install whatever you prefer. From the smooth tube heat exchanger up to the high-end stratified storage tank with fresh water system.

Okay. Well, an ERR is more responsible for temperature fluctuations, right? So have the ERR exempted ;)

The exemption costs money and depends on the caseworker. Tendentially, you have little chance that it will be approved. Alternatively, install a wireless ERR (e.g. Heat it Z-Z-Wave) and let the ERR disappear in the drawer. That way you also avoid subsidy fraud in case you claim funding.