ᐅ Retrofitting a domestic hot water storage tank with an oil heating system

Hello experts,

I have a question regarding my oil heating system, a Giersch MultiJet 16 UB. I want to add a hot water storage tank.

My grandfather didn’t consider this necessary and heated all water using instantaneous water heaters. The burner is about 5 years old. Since I have now taken over the house, I want to install a storage tank that can later also be connected to solar heating.

The points of use are:
Kitchen
Bathroom/bathtub/shower/washbasin

What kind of storage tank do I need, and is this modification straightforward?

I would appreciate any advice.

Best regards, chris

With such a specific model, no one here will be able to help you.
However, I know a good heating engineer near you who could take a look at it.

Is the heating really that bad? It actually has mostly good reviews, so what do you mean by that?

I’m not saying the heating system is bad.
But specific installations are rarely discussed here. This forum is more about the general overview.

chris1207 schrieb:
Hello experts,

I have a question regarding my oil heating system, a Giersch MultiJet 16 UB. I want to retrofit a domestic hot water buffer tank.
My grandfather didn’t consider this necessary and heated everything with on-demand water heaters.
The burner is about 5 years old.
Since I have now taken over the house, I would like to install a storage tank that can later also be connected to a solar system.
The points of use are:
Kitchen
Bathroom/tub/shower/sink

What size storage tank do I need, and is this even feasible?
I would appreciate any advice.

Regards, chris

Do you want a full renovation? You will probably need to install hot water pipes throughout the house first.

Sometimes, decentralized heating isn’t such a bad idea, because although it requires a bit more energy, it results in less water loss. Solar domestic hot water systems usually don’t pay off anyway. So if you have to open up everything just to lay hot water pipes, I would think carefully about it, especially since the on-demand water heaters are already in place.

I agree with the recommendations from Koempy.

Thanks for your responses 🙂 The house will be completely renovated anyway.
I’m planning to replace almost all the pipes, so that’s not an issue. Later on, solar panels will be installed on the roof.
I think it makes the most sense to have a professional come and take a look.
I’m not even sure what kind of buffer tank I need—whether it should have a heat exchanger or if the boiler heats it directly and then circulates through the storage tank.
I’m still at the very beginning of this process 🙂