Our house was completed at the end of 2005. At that time, the regulations regarding thermal insulation were certainly not as strict as they are today, yet I still find the insulation to be, in my opinion, completely excessive.
A few weeks ago, when the mornings were still pleasantly cool, I tried ventilating the ground floor by cross-ventilation to lower the temperature to 20°C (68°F). After closing all the windows, it took less than an hour for the temperature to rise back up to 24.4°C (76°F). It goes without saying that
- all the heating systems were turned off
- such temperatures are not healthy over the long term.
The insulation craze is especially noticeable in the attic, where temperatures of 30°C (86°F) under similar outdoor conditions are common.
After careful consideration, I recently had an inverter air conditioning unit installed in the attic (I work exclusively from home), which has definitely greatly improved the living comfort.
However, to what extent this is compatible with the fundamentally good idea of reducing energy costs—especially considering the expected rise in peak temperatures due to climate change—is something I still wonder about...
Are there other ways to lower the basic indoor temperature to a healthy level (21-22°C / 70-72°F)?
P.S.: There are plenty of search results when looking up “insulation madness”... it makes you wonder if someone suspects something.
A few weeks ago, when the mornings were still pleasantly cool, I tried ventilating the ground floor by cross-ventilation to lower the temperature to 20°C (68°F). After closing all the windows, it took less than an hour for the temperature to rise back up to 24.4°C (76°F). It goes without saying that
- all the heating systems were turned off
- such temperatures are not healthy over the long term.
The insulation craze is especially noticeable in the attic, where temperatures of 30°C (86°F) under similar outdoor conditions are common.
After careful consideration, I recently had an inverter air conditioning unit installed in the attic (I work exclusively from home), which has definitely greatly improved the living comfort.
However, to what extent this is compatible with the fundamentally good idea of reducing energy costs—especially considering the expected rise in peak temperatures due to climate change—is something I still wonder about...
Are there other ways to lower the basic indoor temperature to a healthy level (21-22°C / 70-72°F)?
P.S.: There are plenty of search results when looking up “insulation madness”... it makes you wonder if someone suspects something.
C
chand198630 Jul 2018 20:45The largest heat gain usually comes from solar radiation. Full shading through external measures provides the most relief in summer.
Once the heat is inside, it is not easy to get it out quickly by ventilation.
In my opinion, 24 degrees Celsius (75°F) is really not that bad considering the recent extreme heat.
Here in the apartment, it’s 27 degrees Celsius (81°F), and a south-facing window is not equipped with external blinds.
Once the heat is inside, it is not easy to get it out quickly by ventilation.
In my opinion, 24 degrees Celsius (75°F) is really not that bad considering the recent extreme heat.
Here in the apartment, it’s 27 degrees Celsius (81°F), and a south-facing window is not equipped with external blinds.
chand1986 schrieb:
24 degrees Celsius (75°F) isn’t really that bad considering the recent intense heat, in my opinion.
Here in the apartment it’s 27 degrees Celsius (81°F), and a south-facing window isn’t equipped with external blinds. We maintain 24 degrees Celsius (75°F) here year-round, as long as the outside temperature stays below 26 to 27 degrees Celsius (79 to 81°F).
During extreme heat, of course, it’s higher—currently 27.5 degrees Celsius (81.5°F) at 10:15 pm.
And naturally, we darken all windows with shutters when necessary... at the moment, getting healthy sleep without air conditioning is out of the question.
tomtom79 schrieb:
Theoretically, yes, but in practice, so many heat sources affect the indoor climate in summer that it inevitably becomes warm.Yes, especially through the windows. That’s where the heat comes in, even through closed ones. But I’ve never heard that good roof insulation contributes to warming in summer. That used to be the case when insulation wasn’t as effective. Older attic apartments heat up because of poor insulation. In winter, they are cold.
Humpatz schrieb:
We maintain 24 degrees Celsius (75°F) here all year round, as long as outdoor temperatures stay below 26 to 27 degrees Celsius (79 to 81°F). With extreme heat, of course, it’s more—currently 27.5 degrees Celsius (81.5°F) at 10:15 pm.
And of course, we darken all the windows with roller shutters when necessary... right now, healthy sleep without air conditioning is out of the question.Everyone here is struggling with that issue. The only solution is to keep the roller shutters closed during the day and ventilate crosswise at night.
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