Hello everyone
We are building a townhouse to KfW 55 standard. So far, we have planned to use conventional radiators, as we find their response time better. However, doubts are now arising about whether these radiators can even be used in a KfW 55 building or if there are any reasons against it.
Has anyone dealt with this or is knowledgeable about it here?
We are not fans of underfloor heating, but if there is no other technical option and someone can explain why, we would consider using it as a last resort.
We are building a townhouse to KfW 55 standard. So far, we have planned to use conventional radiators, as we find their response time better. However, doubts are now arising about whether these radiators can even be used in a KfW 55 building or if there are any reasons against it.
Has anyone dealt with this or is knowledgeable about it here?
We are not fans of underfloor heating, but if there is no other technical option and someone can explain why, we would consider using it as a last resort.
R
readytorumble7 Oct 2017 19:53Honestly, I’m surprised that no one here is addressing the response time. We have now been living in the house for about 3 months (brine-to-water ground source heat pump + underfloor heating) and we are positively surprised at how quickly the underfloor heating warms up the rooms.
I had read a lot about the long response times and – although it’s not really a major disadvantage – I still paid some attention to keeping the response time as short as possible.
This means: flooring is tiles + glued vinyl. Insulation under the slab to prevent the underfloor heating from warming the entire slab. Tight pipe spacing, high-quality underfloor heating system (all installed by ourselves). The ground source heat pump (ground collectors) runs at a supply temperature of 28°C (82°F).
The result is that during the day we heat the living spaces to 21°C (70°F). From 9 p.m. to 5:30 a.m., the heating is off. Starting at 5:30 a.m., the heating comes back on and the living rooms reach around 21°C (70°F) by about 7 a.m. At 5:30 a.m. (after the heating has been off for 8.5 hours), the temperature has dropped to about 20°C (68°F) with current nighttime outdoor temperatures around 6°C (43°F).
What I want to say is: I definitely don’t find our underfloor heating sluggish. It heats the room from 18°C (64°F) to 21°C (70°F) within a few hours. To reach 18°C (64°F), however, the heating has to have been off for 3–4 days in the affected room.
I had read a lot about the long response times and – although it’s not really a major disadvantage – I still paid some attention to keeping the response time as short as possible.
This means: flooring is tiles + glued vinyl. Insulation under the slab to prevent the underfloor heating from warming the entire slab. Tight pipe spacing, high-quality underfloor heating system (all installed by ourselves). The ground source heat pump (ground collectors) runs at a supply temperature of 28°C (82°F).
The result is that during the day we heat the living spaces to 21°C (70°F). From 9 p.m. to 5:30 a.m., the heating is off. Starting at 5:30 a.m., the heating comes back on and the living rooms reach around 21°C (70°F) by about 7 a.m. At 5:30 a.m. (after the heating has been off for 8.5 hours), the temperature has dropped to about 20°C (68°F) with current nighttime outdoor temperatures around 6°C (43°F).
What I want to say is: I definitely don’t find our underfloor heating sluggish. It heats the room from 18°C (64°F) to 21°C (70°F) within a few hours. To reach 18°C (64°F), however, the heating has to have been off for 3–4 days in the affected room.
I have now read the entire thread, and it really frustrates me. What a missionary attitude! I wouldn’t bother responding anymore either. If people want radiators, then they want radiators. If that’s the case, we shouldn’t criticize it. Personally, I didn’t want them anymore, but to each their own. Everyone has their own preferences. Yes, you can probably get gas heating and radiators to work at 55°C (131°F), but 70°C (158°F) would be easier. Yes, those things take up space, but the original poster surely knows that and doesn’t mind. Yes, you can heat with them. And whoever pays calls the shots. Long live the Danfoss thermostat. Karsten
readytorumble schrieb:
and we are positively surprised ... is basically another way of saying: we also had some minor prejudices
Nordlys schrieb:
What a missionary attitude! Where do you see that?
Nordlys schrieb:
If the radiators want to operate, they want to operate. If that’s the case, we shouldn’t criticize it. If it seems like someone has unfounded fears, I think it’s good to help them overcome them. If afterwards they feel cheated, maybe the approach wasn’t gentle enough—but nobody here meant any harm, right?
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@Nordlys, Karsten, when the original poster (OP) asks questions and receives answers, it is rude not to respond to the follow-up questions. Period.
Then the responses naturally become a bit harsher because it feels like the person answering is being treated like a milk cow rather than an equal.
I can also be rude by asking a follow-up question. It’s quite easy... The OP is right here at the beginning. It’s time to remind this new generation about politeness, values, and proper behavior.
Mobile greetings from on the road
Then the responses naturally become a bit harsher because it feels like the person answering is being treated like a milk cow rather than an equal.
I can also be rude by asking a follow-up question. It’s quite easy... The OP is right here at the beginning. It’s time to remind this new generation about politeness, values, and proper behavior.
Mobile greetings from on the road
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