Hello everyone,
We have now been living in our house for six months (KfW 55 standard, although the heating demand is closer to KfW 40) and are really impressed with the indoor climate and comfort provided by the underfloor heating (operated by an air-to-water heat pump). The underfloor heating works flawlessly for us and seems well adjusted, at least the energy consumption is reasonable and the indoor temperatures are almost always comfortable. We don’t have a central or decentralized ventilation system; we ventilate traditionally by opening windows. So far, so good.
The only "problem" is the bedroom (about 17sqm (183 sq ft)): it faces northwest and is not directly heated (the flow temperature is set to zero), because even with the door closed it already gets “too warm.” The temperature in the house is around 21–22°C (70–72°F), which is our preferred indoor temperature. However, in the bedroom, we would like only 16–17°C (61–63°F), since 20°C (68°F) makes the bedding unnecessary 😀 But we simply cannot achieve this… Usually, we ventilate by opening windows crosswise for about an hour before going to bed, which lowers the temperature to around 13–14°C (55–57°F) — actually already too cold — but it quickly rises again and reaches nearly 20°C (68°F) in the morning. This causes waking up at night sweating and almost not needing the blanket. Not very restful… 🤨
Sleeping with the windows open is unfortunately not an option since we need complete darkness and absolute quiet.
How do you handle this? Is it something you just have to accept in extremely well-insulated houses, or how do you get the bedroom cooler? I can’t imagine all new-build homeowners comfortably sleeping at 20°C (68°F), as this doesn’t match the general recommendation for the [oB]optimal sleep temperature[/oB] for adults, which is between 15°C and 18°C (59–64°F).
Thanks in advance!
We have now been living in our house for six months (KfW 55 standard, although the heating demand is closer to KfW 40) and are really impressed with the indoor climate and comfort provided by the underfloor heating (operated by an air-to-water heat pump). The underfloor heating works flawlessly for us and seems well adjusted, at least the energy consumption is reasonable and the indoor temperatures are almost always comfortable. We don’t have a central or decentralized ventilation system; we ventilate traditionally by opening windows. So far, so good.
The only "problem" is the bedroom (about 17sqm (183 sq ft)): it faces northwest and is not directly heated (the flow temperature is set to zero), because even with the door closed it already gets “too warm.” The temperature in the house is around 21–22°C (70–72°F), which is our preferred indoor temperature. However, in the bedroom, we would like only 16–17°C (61–63°F), since 20°C (68°F) makes the bedding unnecessary 😀 But we simply cannot achieve this… Usually, we ventilate by opening windows crosswise for about an hour before going to bed, which lowers the temperature to around 13–14°C (55–57°F) — actually already too cold — but it quickly rises again and reaches nearly 20°C (68°F) in the morning. This causes waking up at night sweating and almost not needing the blanket. Not very restful… 🤨
Sleeping with the windows open is unfortunately not an option since we need complete darkness and absolute quiet.
How do you handle this? Is it something you just have to accept in extremely well-insulated houses, or how do you get the bedroom cooler? I can’t imagine all new-build homeowners comfortably sleeping at 20°C (68°F), as this doesn’t match the general recommendation for the [oB]optimal sleep temperature[/oB] for adults, which is between 15°C and 18°C (59–64°F).
Thanks in advance!
Mbk84 schrieb:
Crazy what’s out there 🤨 I just googled it, and you quickly end up at so-called therapy blankets, which can be helpful for anxiety and similar issues. Even without anxiety, I don’t think the idea is bad at all, because these extremely thin and lightweight blankets don’t really feel like traditional blankets to me. Yes, I believe they were developed in connection with therapy for anxiety and depression. But really, anyone can benefit from them. I also think that even without symptoms, people tend to sleep better under a weighted blanket. The release of those hormones should work in healthy people too.
However, I’m speaking without personal experience. Such a blanket is on my wish list, but I haven’t tried one yet. 🙂
E
ETW-Eigentümer21 May 2022 21:22Mbk84 schrieb:
Hello everyone,
We have now been living in our house for 6 months (KfW 55 standard, although the heating demand is closer to KfW 40) and are really impressed with the indoor climate and comfort with underfloor heating (powered by an air-to-water heat pump). The underfloor heating works completely trouble-free for us and seems to be well regulated, at least the energy consumption is reasonable and the indoor temperatures are almost always comfortable. We don’t have any centralized or decentralized ventilation system; we ventilate the traditional way by opening windows. So far, so good.
The only “problem” is the bedroom (about 17sqm (183 sq ft)): It faces northwest and is not directly heated (ERR set to 0) because it already gets “too warm” even with the door closed. The temperature throughout the house is currently around 21-22°C (70-72°F), which is our preferred temperature. However, in the bedroom, we would like it to be just 16-17°C (61-63°F); at 20°C (68°F), I can forget about needing a blanket 😀. But we just can’t achieve this… We usually ventilate crosswise for about an hour before going to bed, which lowers the temperature to about 13-14°C (55-57°F) — actually a little too cold — but it quickly rises again and is nearly 20°C (68°F) in the morning. This means you wake up sweating during the night and hardly need a blanket. Not very restful... 🤨
Sleeping with the window open is out of the question because we need complete darkness and absolute silence.
How do you handle this? Is this just something you have to accept in extremely well-insulated houses, or how can you keep the bedroom cooler? I can’t imagine all new-build owners comfortably sleeping at 20°C (68°F), which doesn’t fit the general recommendation of the “optimal sleeping temperature for adults [being] between 15°C and 18°C (59°F and 64°F).”
Thanks in advance! Hello,
I can relate to this post. Since the end of January, I’ve been living in a condominium on the 3rd floor. It’s generally too warm in all rooms, especially in the bedroom. I ventilate in the evening, but by morning, the temperature is several degrees higher again. The underfloor heating has long been turned off in the bedroom. My bathroom also borders the bedroom. My real estate agent assured me that the times when you sweat in summer and freeze in winter are over. In the bedroom, I’d like it to be less than 20°C (68°F), ideally around 17°C (63°F). Even with the blinds down when the sun shines, it’s already 23°C (73°F) in there. When the heat exceeds 30°C (86°F) for weeks, I’m worried it will get even warmer. I would have thought a modern KfW 55 house would keep heat out better. I can’t sleep with the window open, not even before moving in. Now it’s even less an option because of the street noise, worsened by the cobblestones. In this respect, I’m disappointed in the new build. But at least I’m not the only one.
Best regards,
Thomas
D
Deliverer21 May 2022 21:51Insulation keeps heat out longer and then also retains it inside for a longer time. Therefore, most people cannot avoid using air conditioning (if they want to sleep well).
In der Ruine21 May 2022 22:31halmi schrieb:
16 degrees will almost certainly not be achievable. If you always keep the window tilted open, after 1-3 years you will get dark spots above the window.What makes you say that? I have slept my whole life with the window tilted open in winter and open in hot weather. Never had any problems with spots or mold.In der Ruine schrieb:
What makes you say that? I've slept my whole life with the window tilted in winter and open in hot weather. Never had any problems with stains or mold. You mean stains inside the room, but he's referring to stains outside above the window on the building facade. You can see this on some (many) houses with ETICS (external thermal insulation composite systems).
(Search for "facade black above window")
ETW-Eigentümer schrieb:
Actually, all rooms are too warm, especially the bedroom.Are you referring to the current situation (without heating), the heating season, or both?A bedroom facing the sun is naturally less than ideal.
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