Cooling with heat pump via underfloor heating?

2021-08-17 04:20:03

what would be the realistic indoor temperature of a KFW 40/55 house after two weeks of a heat period for you? ;)

According to various posts during heat periods in the relevant Facebook groups, peak values of 28-29 degrees are measured in the attic of massively built kfw55 houses. There are also some who do not reach these values even during heat periods because there is no roof window facing south, etc.

2021-08-17 09:09:59

Cooling via underfloor heating at 2-3 degrees costs about 2,000-3,000 EUR (in one post sometimes 4,000 EUR), while the air conditioning costs about 13-16,000 EUR. Whoever feels comfortable at 33-35 degrees indoor temperature is satisfied with the 2-3 thousand EUR, whoever would like 21-24 degrees has to pay a five-figure amount for cooling their single-family house.

There is probably a big misunderstanding here again. The 2-3 degrees are of course not in relation to the outside temperature, but to the room temperature one would have without cooling. At 30 degrees outside, without cooling I do not have 30 degrees inside, but depending on shading 23-26. With underfloor heating cooling then 22-23. I find that very pleasant!

2021-08-17 11:21:51

what would be a realistic indoor temperature for a KFW 40/55 house after two weeks of a heatwave? ;)

Well, in the upper 20s. If the temperatures you mentioned were there, I would sue the construction company and have the hut demolished at their expense.

2021-08-17 13:30:54

We are currently having an air conditioning system installed on the upper floor in the hallway for about 4.5k, but we will also be able to cool via the underfloor heating. Hopefully, I will be able to report on the results and effects next year.

2021-08-17 13:59:42

I hope to be able to report on the results and effects next year.

The question beforehand is, what does it currently look like or compared to "without" - during a summer. With climate/floor heating-cooling, the results are clear.

2021-08-17 14:31:38

The question beforehand is, what does it currently look like or in comparison to "without" - during a summer. With air conditioning/underfloor heating-cooling, the results are clear.

I actually plan to turn on the cooling only when it gets too warm for me. Therefore, I should be quite able to assess the difference between before and after. (Hopefully there will be a reasonably stable weather situation at some point)

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Cooling with heat pump via underfloor heating?

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