New construction! Help with heating system!

Hello Biago,
I have also now spent quite some time dealing with the topic of gas condensing boiler with solar + water-bearing tiled stove.
The system for our new building is now basically finalized.

Make sure you don’t overheat the installation room with the chimney! Because if you want to use the water technology properly, you have to really stoke the fire.... for me 10-20 kg of wood per day... but with that you can then also heat the house without additional natural gas. We quickly ended up with a tiled stove with an additional after-heating duct so as not to warm the room with too much direct radiant heat. The energy is stored for up to 12 hours via the after-heating ducts and released slowly. Only 10% goes directly into the room (about 1.5 kW) with 62 m² installation room. Such a stove costs about 15k€ and only pays off after about 20 years. But personally, I enjoy heating like this and find the investment in a stove more sensible than, for example, in a KNX/EIB system.

I have calculated the wood consumption and come to about 10 SRM over a heating season (185 days).

Regards Fragi

....We have decided to use a condensing boiler with storage tank and 2 solar collectors in combination with a water-guided fireplace! Underfloor heating is to be installed completely on the ground floor and radiators are to be installed in both children's rooms as well as in the bedroom on the upper floor, and in the bathroom I was thinking of a radiator return loop....

Why this concept?

Best regards

Hello Artur,

So I also think that here the desire rather determined the concept and not technical and economic approaches. Did you come up with the concept yourself like that or was it already presented as an offer?

Can you say a little more about the energy standard or the component execution as well as the energy consumption? And I would avoid two different heat emission options in a similar way as multiple heat generation options. And the information from fragri about the water-bearing fireplace and the danger of overheating is essential because it also determines future usability: If the stove releases too much heat into the room, it may be that you use it less, and thus the hot water preparation is not really supported.

Best regards, Erik

...Regards Erik from moderne Heizung

New nickname for global, blanket natural gas sales?

best regards

Hello. First of all, thanks for the numerous responses! Unfortunately, I am a layman when it comes to energy consumption/energy standards... The reason I chose this heating option is a suggestion from a colleague who was a heating engineer and said that if you take a gas condensing boiler combined with 2 solar collectors = heating of domestic hot water! 2 additional solar collectors and heating the heating water, and in combination with a buffer storage tank and a water-guided fireplace, and then additionally heating without using gas, so to speak (winter time)

To pick up the topic again, we are building a single-family house with timber frame construction, about 140 sqm, and I would like to have underfloor heating, and now the question is which heating system should go in!!!

On the one hand, I want to save something, but on the other hand, also have something efficient!!! I know these are two opposites, but there has to be a way/possibility for it!?

What I would also like to mention where the sense was: underfloor heating on the ground floor and upper floor (only bathroom) and the remaining rooms on the upper floor (3 bedrooms) with radiators, so that when I want it warm quickly in the bedrooms, I just turn on the radiators and that’s it! With underfloor heating it would take longer and stay warm longer, which sometimes you do not want! The rest, when I need heat without turning on the underfloor heating, I just turn on the fireplace!

Well, yes, and I have been dealing with this for weeks and still don’t know what kind of heating system I should consciously choose. Some have now only advised me to take an air-to-water heat pump, but the information on the internet regarding consumption of such a system varies greatly—from 2500 kWh per year to about 6000 kWh per year depending on the sources.

You need different heating circuits for underfloor heating and for individual radiators, so 2. ->Costs

Also, it is probably ineffective heating to let rooms cool down in order to possibly run the radiator at full power later.
This can bring a mold problem into your home.
It also consumes more than continuous heat from underfloor heating.

Caution, acquired layman opinion - please correct me if I am wrong