ᐅ Underfloor Heating Distance from Balcony Doors

Created on: 20 Oct 2018 16:50
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Snowy36
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Snowy36
20 Oct 2018 16:50
We are building a KFW 55 house, and the heating system will be an air-to-water heat pump.

The underfloor heating has now been installed (according to the heat load calculation).

I am surprised that the distance to the balcony doors is almost 30 cm (12 inches), meaning no pipes were laid in these reveals. Could this cause problems? Thermal bridging? Will I have cold feet when standing there?

Until now, we have always used gas, so sorry if my questions seem basic. However, I have never lived with such a low supply temperature in a new building before.

If this is problematic, then the question is how it can be fixed, since the underfloor heating has already been installed. The question is to what extent it can still be adjusted.

We wanted to be present during the installation, but someone just came by in the evening without notifying us.
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Snowy36
21 Oct 2018 00:06
Can’t anyone comment on this? Underfloor heating and air-to-water heat pumps with low flow temperatures are quite common...

How were the pipes installed in your homes under floor-to-ceiling windows/doors?
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readytorumble
21 Oct 2018 09:47
If the underfloor heating is 30cm (12 inches) away, you will probably have cold feet if you stand as close as 10cm (4 inches) to the balcony door. Whether you can actually get that close is questionable.
Maybe you only notice it at 5cm (2 inches), or maybe at 15cm (6 inches), who knows?

However, it shouldn’t be too close either, because you don’t want to heat the door or windows (= weak points).
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Snowy36
21 Oct 2018 09:52
Maybe the question is a bit trivial, but I was surprised that the neighbor's pipes were installed almost right up to the doors. This is how it looks in our house, and it should actually be fine, right?

Underfloor heating: White pipes laid in spiral shapes over a red grid base.
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Bookstar
21 Oct 2018 10:16
I’m not exactly sure how it was in our case, but in a KfW55 house, the edge areas don’t cool down excessively. Also, people usually don’t stand there, and depending on the floor type (wood, tiles, etc.), you won’t really notice much difference with the current supply temperature of max. 35°C (95°F).

I’d say the heating technician could have added one or two more loops, but probably wasn’t interested anymore.

I would raise this issue with them, but I don’t see a major problem here.

Good luck.
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Curly
21 Oct 2018 10:33
Our site manager said that the heating pipes should be installed very close to the exterior walls and windows, but I don’t remember the exact reason why. So, in our case, they were laid right next to the walls and windows everywhere.

Best regards
Sabine

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