Electricity consumption at home, what is your consumption?

Our "base load" is about 180W with the controlled residential ventilation running. Our Hoval FR301 requires 180W at 100%, which is very rarely used.

Annual electricity consumption is just under 4100kWh, of which 1500kWh is self-produced and directly consumed via photovoltaics. 9600kWh fed into the grid from a 9.74kWp system. The air-water heat pump consumed 2200kWh for heating and hot water. KfW40 house with 143m² living area + basement.

For me, a new building without controlled residential ventilation is no longer up to date. Just as much as a wood stove has no place in a well-insulated new building, in my opinion. And a photovoltaic system pays for itself, the only thing in the house that ever amortizes.

In summer controlled residential ventilation proves to be useless, I have already had to learn that. But in Germany we only have 3-4 months of summer. The rest of the year I adore this simple machine.

In summer you still have to ventilate, and controlled residential ventilation works the other way around in summer. This way you can cool the hot outside air with the cooler inside air when bringing it into the house. Of course, you can also only ventilate at night and keep everything closed during the day.

For me, a new building without controlled residential ventilation is no longer up to date. Just like a wood stove has no place in a well-insulated new building, in my opinion. And a photovoltaic system pays for itself, the only thing in the house that ever amortizes.

From my point of view, a very daring thesis. More up to date would rather be manual ventilation and not installing controlled residential ventilation so that it is done automatically and additionally consumes electricity/pollutes the environment.

As you can see, the truth about controlled residential ventilation is very subjective.

From my point of view, a very bold thesis. More contemporary would be to ventilate manually rather than installing a [Kontrollierte-Wohnraumlüftung], so that it is done automatically and additionally consumes electricity/pollutes the environment.

However, a [Kontrollierte-Wohnraumlüftung] with heat recovery also saves heating costs. Otherwise, you ventilate the heat out the window. But what is contemporary anyway. Ecologically, a detached house is not anyway. Contemporary more in terms of comfort and that devices take over the work and you always have fresh air without any effort.

So rather comfortable than contemporary. One must not forget that in most parts of Germany, winter is no longer the winter it was 10 years ago. It is getting warmer and as a result, controlled residential ventilation becomes less efficient.

Actually, it does not. At least not as long as the heating period does not shift. Every kWh not "vented out" does not have to be produced again and brought into the house. As a rule, the consumption of controlled residential ventilation and the energy savings balance each other out. Of course, it is true that it is not strictly necessary, but rather a luxury. But once you start THIS topic, there is no end. Examples: single-family house in general, car, chainsaw, etc.

1,500 kWh for 2 people, 2 cats, a few spiders and few mosquitoes

Of course, it is true that it is not absolutely necessary, but rather a luxury.

Amen