ᐅ What is the typical degree of heat loss overnight?

Created on: 14 Nov 2016 07:38
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Brandt123!
Hello,

in our newly built house (built in 2016) we currently do not have a heating system and only use the wood stove in the living room (6 kW). We heat from around 4 p.m. after work until about 10 p.m. Then, when we go to bed, the temperature inside is around 21.5°C (71°F). The stove is then turned off.

In the mornings, we wake up to about 17.5°C (63°F). (Current outside temperature at night is about -1/-2°C (30/28°F))

Is this normal? It seems like a significant temperature loss to me. Our house is about 145 m² (1,560 ft²).
I remember the seller saying how long the temperature would be maintained, etc.

What are your experiences?
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Brandt123!
14 Nov 2016 09:13
No, we had to move in due to time pressure. The proper heating system will be installed in weeks 47/48.

You can live like this comfortably for about a month. The house heats up quickly, and since we have an open space above (gallery), the bedroom upstairs is also warm, but only for a short period. Of course, the heating system will be installed next week.

Based on experience, I thought someone might have already tested how many degrees their house retains overnight.

I will check at 3:00 PM right away.
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Legurit
14 Nov 2016 09:17
Your house cools down as quickly as it heats up... Mass is not heated, only the air.
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Lanini
14 Nov 2016 09:22
We currently live in an unrenovated apartment from the 1970s (single-family house, but we only occupy the first floor) and mostly heat with our wood stove. The residents on the ground floor do the same. We heat roughly from 4 p.m. to 10 p.m. and usually maintain around 23°C (73°F) in the living room during that time. The next morning, after the stove has gone out overnight, the living area is typically about 17°C (63°F). So, our situation is not much worse than your new build, which I think is mainly because the stove heats only the air, which cools down quickly. Therefore, I believe this is quite normal. In the bedroom, we keep the heating on overnight (standard radiators, oil heating).
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ypg
14 Nov 2016 10:02
Brandt123! schrieb:
No, we had to move in due to time pressure. The proper heating system will be installed in week 47/48.

I’ll check it around 3:00 PM.

There are passive houses that do not require conventional heating systems, and you also have a solid timber house (I’m not very familiar with that), plus the wood stove... but you do have a concrete screed, right? How did you manage to get rid of the moisture?

If the plan is to heat only with the stove, it will need to be lit first thing in the morning...

The other thing: time pressure is no excuse!

A house that is occupied is considered accepted—even without a heating system! To me, that is a serious legal mistake. It’s not like a door is missing.

If you have to leave the apartment, there are alternative options.

Besides the question of who is to blame, there are possibilities for temporary accommodation.

Simply accepting the house without a heating system installed is a no-go for me.

Could pipes burst?

Here, we have had severe subzero temperatures with snow for 10 days...

But as mentioned above by myself and others: it’s not surprising that the indoor temperature drops overnight.
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Brandt123!
14 Nov 2016 12:01
I don’t know of any law that requires you to install heating. According to that, I could even move in with just a wood stove if I wanted to. Which pipes are supposed to burst? Our lowest indoor temperature is 17°C (63°F). Nothing will burst.

We don’t have a screed. Our concrete slab includes the underfloor heating. A "Swedish slab."

The construction has been dry from the very beginning.
Nofret15 Nov 2016 10:54
In short: since only the indoor air heats up quickly in your case, it also cools down just as fast. It would be different if you properly heated the space for a longer time, as then the building materials would warm up as well and retain the heat longer according to their material properties.