KFW 55, underfloor heating with water-heated fireplace

  • Erstellt am 2017-01-22 17:15:14

Sunshine143

2017-01-22 17:15:14
  • #1
Hello dear ones,

After a long wait (finding an affordable plot of land in our region is currently a real stroke of luck), we are finally about to start building our house. The current topic that concerns us and where we keep wavering is the heating.

The basic data of our planned house:

- Prefabricated house, timber frame construction
- Living area approx. 150 sqm (without basement)
- KFW 55
- Sloping plot (southwest slope)
- Fully basemented, basement half used as garage, part as technical/utility room and a guest room (this is rarely used and heated with an infrared heater or similar)
- Rough layout (ground floor: hallway with staircase, guest WC, storage room, open living, cooking, dining area) upper floor: bathroom, two children's rooms, bedroom with dressing room
- We are building in Elzach, near Freiburg in southern Baden, so rather a warm region

Initially, an air-to-air heat pump Proxon was planned, sold by Proxon (Zimmermann ventilation). However, the following points led us to probably decide against it:

- Very little information can be found on the internet (if any, then old or not suitable for our house)
- When it is very cold, the heat pump can no longer manage alone and has to be supplemented with electric heating. The air is said to become very dry during this process
- Since the warm air is distributed into the rooms via the ceiling, the floor is said to be cooler
- Room air is probably a maximum of 22°C warm
- Air is a poor heat carrier
- Therefore, it will probably be an air-to-water heat pump with underfloor heating

Now we would like to have a fireplace. The question now arises whether it will be a water-guided fireplace or not. (For your information: we can get firewood cheaply or even free of charge)

We now have the following questions:

- Does anyone have an air-to-air heat pump and can tell us if the points listed above are accurate?
- Regarding the fireplace question, is a fireplace stove (water-guided) just as effective as a masonry fireplace with water guidance?
- Would a masonry fireplace with storage stones without water guidance overheat the house? (Of course, this depends on the released kW. What is the experience here?)
- Does a water-guided fireplace pay off in the additional costs, i.e. other buffer storage (three-chamber storage), fireplace type, pipes?
- A water-guided fireplace would probably only pay off if it is heated regularly (not just occasionally for coziness)?

We have already done a lot of research, but the amount of information is hardly manageable. In addition, most posts are either old, not adapted to our house type, or contradictory.

Please do not stone us right away if this question has already been asked "multiple times". We hope for concrete, situation-adapted information, tips and advice.

Many thanks

Julia and Alexander
 

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