Fetzerino
2020-09-14 13:46:15
- #1
Hello community,
For a few days now, I have been researching the current heating technologies and have the feeling that it raises more questions than answers, which is why I am now turning to you with my questions in the hope that experienced users with this system have answers for me.
My wife and I would like to build a KFW40+ house with about 130 sqm. The house will have an unobstructed view to the south, which will mean a lot of sun in summer and winter. A photovoltaic system is to be installed on the roof. Currently, we tend to go for a prefab house, but we are still in the discovery phase here as well. We both currently live in an apartment with underfloor heating and a gas boiler, and we find the warmth radiated by the underfloor heating pleasant. I set the room temperature centrally to 23 °C on the gas boiler because we both like it quite warm, which can then be regulated downwards via local thermostats.
With a prefab house, one is usually offered the Proxon air-to-air heat pump as the thing sold on the market. However, if you research further, you see pros and cons of the whole technology, as with every topic. So far, I have read that many heat their rooms to 20 - 21 °C with the air-to-air heat pump. However, I have not yet found out whether you can also achieve 23 °C with an air-to-air heat pump without these reheating plates. The question is also what power these reheating plates consume? The sales rep from the prefab house provider also said that you can heat the room warmer very quickly (5 min) with these reheating plates. Ultimately, it works like a hairdryer. But if I hold a 2 kW hairdryer in a room, I do not notice a significant difference after 5 minutes.
Question: Can I also achieve a room temperature of 23 °C without reheating plates, even in larger rooms? What consumption does such a reheating plate have? Does anyone have additional consumption data for the heating? How does it behave on cold winter days? Ultimately, it is about the indoor climate and 23 °C is not the same as 23 °C, which is also clear to me.
As an alternative, an air-to-water heat pump is probably an option. In terms of efficiency, it should be like the air-to-air heat pump but more expensive to purchase because the pipes have to be laid, but it is probably more economical in operation because the flow temperature is lower. Is that correct? With this type of heating, it should be no problem to achieve 23 °C even in larger rooms, right? Does anyone also have consumption data here? Ultimately, it depends on one's own behavior, I know that, but one can get a feeling through the figures.
Cooling in summer is not possible with this heating, but it should be possible with an addition of an air-to-air heat pump. Does it get very warm in a KFW40+ house in summer?
Thank you very much for your help and info
For a few days now, I have been researching the current heating technologies and have the feeling that it raises more questions than answers, which is why I am now turning to you with my questions in the hope that experienced users with this system have answers for me.
My wife and I would like to build a KFW40+ house with about 130 sqm. The house will have an unobstructed view to the south, which will mean a lot of sun in summer and winter. A photovoltaic system is to be installed on the roof. Currently, we tend to go for a prefab house, but we are still in the discovery phase here as well. We both currently live in an apartment with underfloor heating and a gas boiler, and we find the warmth radiated by the underfloor heating pleasant. I set the room temperature centrally to 23 °C on the gas boiler because we both like it quite warm, which can then be regulated downwards via local thermostats.
With a prefab house, one is usually offered the Proxon air-to-air heat pump as the thing sold on the market. However, if you research further, you see pros and cons of the whole technology, as with every topic. So far, I have read that many heat their rooms to 20 - 21 °C with the air-to-air heat pump. However, I have not yet found out whether you can also achieve 23 °C with an air-to-air heat pump without these reheating plates. The question is also what power these reheating plates consume? The sales rep from the prefab house provider also said that you can heat the room warmer very quickly (5 min) with these reheating plates. Ultimately, it works like a hairdryer. But if I hold a 2 kW hairdryer in a room, I do not notice a significant difference after 5 minutes.
Question: Can I also achieve a room temperature of 23 °C without reheating plates, even in larger rooms? What consumption does such a reheating plate have? Does anyone have additional consumption data for the heating? How does it behave on cold winter days? Ultimately, it is about the indoor climate and 23 °C is not the same as 23 °C, which is also clear to me.
As an alternative, an air-to-water heat pump is probably an option. In terms of efficiency, it should be like the air-to-air heat pump but more expensive to purchase because the pipes have to be laid, but it is probably more economical in operation because the flow temperature is lower. Is that correct? With this type of heating, it should be no problem to achieve 23 °C even in larger rooms, right? Does anyone also have consumption data here? Ultimately, it depends on one's own behavior, I know that, but one can get a feeling through the figures.
Cooling in summer is not possible with this heating, but it should be possible with an addition of an air-to-air heat pump. Does it get very warm in a KFW40+ house in summer?
Thank you very much for your help and info