ᐅ House electricity consumption – what is your usage?

Ybias78 schrieb:

Let me be surprised. I think the construction contract will be signed by the end of 2020 or beginning of 2021. Let’s see what is known by then

Since politics at the moment revolve around COVID-19, COVID-19, and COVID-19, probably nothing will happen there. In addition, there are transition periods. As I said, this has been going on for so long and should have definitely come into effect by 1.1.19 (January 1, 2019).

haydee schrieb:

Since politics is currently all about Corona, Corona, and more Corona, nothing will probably happen. Besides, there are transition periods. As I said, this has been ongoing for a long time and should have come into effect as of January 1, 2019.

However, the transition period means: building permit / planning permission applications from November 1 onwards must comply with the new regulations. But how can that be, if nothing is finalized?

Musketier schrieb:

I received my annual electricity bill yesterday: 5500 kWh including heat pump (without mechanical ventilation and without a fireplace) for a household of 3 people.

How do you manage that?

Altai schrieb:

Just a quick question, although I don’t have one myself: would a controlled residential ventilation system possibly also dehumidify the air? There are always days in summer when the outdoor humidity is very high, and consequently inside as well. Over time, I would have concerns about moisture. But ventilation alone doesn’t seem to help much.

Yes, ours also regulates humidity and dehumidifies. We recently had an introduction when it was commissioned. We were told that after cleaning the filters, it’s fine to put them back in while still damp because they dry automatically within the system.
We were also advised to continue additional ventilation during the first few months (ideally the first year) because the new building is still damp and the controlled residential ventilation system alone is not sufficient to fully dry out the construction; it simply can’t manage that.

Altai schrieb:

A quick question, although I don’t have one: does the controlled ventilation system also help to dehumidify the air? In summer, there are often days when the outdoor humidity is very high, and it’s correspondingly humid inside, which raises concerns about moisture over time. You really can’t fix that just by airing out.

As long as the outdoor temperature is lower than inside (e.g., at night), the controlled ventilation system will dehumidify the incoming air. That’s the normal function of the system.

Altai schrieb:

The idea that opening windows for 5–10 minutes will cause the house to cool down drastically is nonsense. The air is exchanged, but air has very low heat capacity since it’s a gas and there is relatively little mass, so only a small amount of heat is lost outside. Most of the heat is stored in the house itself—in the walls and the floor. That´s why it quickly gets warm again after airing out.

No, that’s not nonsense. Modern houses generally consume very little energy, so heat loss from ventilation significantly impacts the overall energy balance. This was different in older buildings or existing homes from before energy-saving regulations were introduced. There are plenty of studies and example calculations to support this. Heat loss due to ventilation can account for up to 30–40% of the heating energy in a house built to current energy-saving standards. The heat you mention stored in walls, floors, etc., is released back into the indoor air while your windows are open and is partly lost through ventilation. Additionally, the fresh air you bring into the house continuously extracts heat energy from these sources (walls, furniture, etc.), which your heating system must then compensate for directly and indirectly.

The truth probably lies somewhere in between