ᐅ Hydronic Wood-Burning Stove, Underfloor Heating, Heat Pump, Photovoltaic System in New Construction?

I already mentioned that a hydronic wood stove will be added in winter, so the air-to-water heat pump won’t have to work as hard.

Do I understand correctly that there will be a water storage tank connected to both the air-to-water heat pump and the wood stove? And when the water is heated by the stove, the air-to-water heat pump automatically turns off?

For electricity at night, I would of course use an electrical storage system.

So, does it make sense to plan in this direction and design the house accordingly during construction?

Good morning,

nordanney schrieb:

I didn’t say that the photovoltaic system isn’t cost-effective

Then I apologize!

nordanney schrieb:

A year ago, storage systems were simply too expensive for us, didn’t fit the house, and I estimated the lifespan to be around three years?

Storage system prices have dropped significantly recently; Chinese manufacturers are flooding the market, forcing other producers to lower their prices. As far as I know, a lithium-ion battery (installed outdoors, by the way) is expected to last about 20 years; at least there are warranties covering the number of charging cycles.

Regards, Bauexperte

In my opinion, it doesn’t make sense to orient your house based on the heat generator and generally as you described, although this might change when factors like house size, heating load, number of occupants, lifestyle habits, etc. are known. But once all this data has been determined, the planner will usually provide the answer as well.

In most cases, a fireplace that can also be used to heat water along with the necessary piping and so on is too expensive to be anything more than a novelty.

The house has about 80m2 (860 sq ft) on the ground floor and 100m2 (1,080 sq ft) upstairs, and there are three of us living here.

Since we want a wood-burning stove anyway, mainly because it provides great heat and the fire looks nice, I thought it might make sense to go for a hydronic one to help reduce the load on the air-to-water heat pump during winter, as it uses the most electricity at low temperatures.

And since all the pipes are planned anyway in a new build, I don’t think this will lead to significant extra costs. It would probably be different with an older building if you wanted to install it later on.

Or am I mistaken?

It would be great if someone knowledgeable could give me some advice.

I’m also planning to ask a plumber about this in January.

I think you will only create more problems for yourself.

1. The regulations will become significantly more complex.
2. You will need a larger water storage tank. Otherwise, a lot of heating energy will be wasted. If the stove is not on, the heat pump will have to heat the storage tank.
3. The additional storage requires more space.
4. The stove is considerably more expensive.

I would carefully calculate the cost-effectiveness.

Why do I need a larger storage tank with a stove?

Can't the stove simply heat the hot water tank of the air-to-water heat pump?