Fireplace and underfloor heating - is air circulation or storage more sensible?

On the one hand, it is indeed the case that during the transition period the underfloor heating can't keep up... It simply says it's still too warm outside to turn on, and when it finally does turn on, it needs some time to heat everything up; during that time, as a woman, I was freezing my butt off.

That's annoying. Don't you have a controller where you can activate the heating manually? Like a kick in the butt?

I do find the storage stones quite useful because they take away some of the heat.

Do they take away or remove? (Serious question)

On the one hand, it is indeed the case that during the transition period the underfloor heating can’t keep up... It simply says it’s still too warm outside to turn on, and when it finally does turn on, it takes a while to heat everything up—in that time I, as a woman, have frozen my butt off. Just turn on the heater and that’s that.

Then you just have to set the heating properly.

If only aesthetics matter, then at most forced air and preferably no storage stones.

We had a see-through fireplace with more power, but also a 75 sqm living/dining area. Fire on, temperature slightly high (max. +3 degrees in the evening), most of the heat lost through the chimney. All relaxed.

Serious question: shouldn’t forced air actually make the room “warmer” than storage stones?

I imagine it like this: the stove gets hot inside from the fire.
Forced air variant: the cold air from the room is sucked in, passed directly past the heat source, heated, and then released back into the room. This heats the air relatively quickly – almost like putting a fan heater in the room. However, it also cools down relatively quickly once the heat source (fire) is off.

Storage variant: the stones are cold or at room temperature. It takes some time for the stones to warm up, and they heat slowly. This way, the heat is released slowly until at some point the “full” temperature is reached. When the heat source is off, the stones cool down slowly.

Or am I thinking about this wrong?

We have 50 sqm of living space with a large open space to the upper floor. With our 7 KW fireplace, we basically heat the whole house, i.e. all reachable rooms additionally. Since the fireplace is operated situationally, you don’t really intervene much in the underfloor heating, so you can’t avoid having to briefly ventilate or going out to the terrace when there’s too much heat during operation. In your case, the room is also closed – you will open all the doors ;)

What kind of stove do you have? Or rather, which of the variants I described?

We have the second variant and are very satisfied with it.
On the one hand, it is indeed the case that during the transition period, the underfloor heating can’t keep up... It simply says it’s still too warm outside to turn on, and when it finally does, it takes time to heat everything – during that time, as a woman, I froze my butt off. Just turn on the stove and that’s that.

I do find the storage stones very useful because they take some heat away and so it doesn’t get 800° all at once in the room.

My father has a normal Swedish stove in his KfW 55 house, and you can’t stand it when you turn it on.

Thanks for the experience report. What kind of stove do you have or how much power does it have?

Many thanks to everyone for your answers.

11kw are initially 11kw, to have a comparison, what power does your heating system have?

Serious question: shouldn't the circulating air actually make the room "warmer" than storage stones?

It's "just" a bit of air that is sucked in at the bottom of the chimney and then directed at the burning spot/the stove pipe and goes back into the room at the top (without a fan or anything like that). Most of the energy = heat, you blow out through the chimney. The storage stones, on the other hand, absorb a lot of heat and then release it again over a longer period of time. In addition, the room is also normally heated through the chimney. So it's warm air blowing (which you can also get out again very quickly by "just" opening the patio door) compared to a kind of second heating (like underfloor heating, when the screed is heated up and then slowly releases the heat compared to a radiator that you just turn up for a short time and then it's cold again). As I said, we had the warm air version with – now I checked – 16 kW on 75sqm area. That was really manageable in terms of heat output. I didn’t perceive 3 degrees warmer in the evening as "suddenly sauna". But except for the fireclay bricks, which were installed as protection in the combustion chamber, no storage stones at all.

Hello,

we also decided on a fireplace and spoke with a recommended stove builder and came to an agreement. We also discussed the overheating of the room as well as the controlled residential ventilation. The fireplace is certainly smaller than yours. However, we will only have a 30 sqm living room and a semi-open kitchen with 15 sqm. The fireplace will be lined with storage bricks. I will also upload the offer as well as the picture of the fireplace. The price is net. Gross it is €7,500.