Good morning everyone,
I wanted to ask what your house’s electricity consumption is at night when everything is quiet and sleeping, so what is running continuously?
We have a newly built house, moved in summer 2019. Our building services include underfloor heating (air-to-water heat pump), controlled mechanical ventilation (runs at full power 3 times a day for 2 hours each, then reduced), a photovoltaic system, and otherwise the usual nighttime appliances (phone charger plugged into USB outlet, e-bikes charging occasionally, 2 TVs on standby, Alexas on standby, etc.).
At night, we have a continuous consumption of about 232W (with ventilation running at reduced power and when the heat pump is not producing). I can see this in the app for the photovoltaic system. From 0:00 to 6:30 a.m. we consume about 2.8 kWh.
How about you?
Best regards
I wanted to ask what your house’s electricity consumption is at night when everything is quiet and sleeping, so what is running continuously?
We have a newly built house, moved in summer 2019. Our building services include underfloor heating (air-to-water heat pump), controlled mechanical ventilation (runs at full power 3 times a day for 2 hours each, then reduced), a photovoltaic system, and otherwise the usual nighttime appliances (phone charger plugged into USB outlet, e-bikes charging occasionally, 2 TVs on standby, Alexas on standby, etc.).
At night, we have a continuous consumption of about 232W (with ventilation running at reduced power and when the heat pump is not producing). I can see this in the app for the photovoltaic system. From 0:00 to 6:30 a.m. we consume about 2.8 kWh.
How about you?
Best regards
Nida35a schrieb:
Clay bricks have a vapor diffusion value, which means vapor-permeable houses have existed for several centuries; this has nothing to do with airtightness.Exactly. For centuries, unsuspecting homeowners have been misled.Nida35a schrieb:
Clay bricks have a vapor diffusion valueGo ahead, how much of what can really "diffuse through" in what time frame?Regarding controlled mechanical ventilation: I won’t go without it anymore. Not for any price. Or rather, for the small amount of money saved from solar panels, which is supported by public funds anyway.
Nida35a schrieb:
That means, conversely,
airtight houses with mechanical ventilation with heat recovery,
or diffusion-open houses without mechanical ventilation,
we chose option 2 What exactly is a diffusion-open house? When I think of diffusion, I think of water vapor, not air exchange. Only air exchange prevents mold. According to the energy saving regulations, your house must be built airtight, so that option is out.
The fact is: a well-built house doesn’t need mechanical ventilation with heat recovery if you ventilate properly by opening windows. That is still true today. But the comfort, especially during winter, is significant. And at night while I’m sleeping, I can’t ventilate. Neither can I ventilate when I’m on vacation or at work. Yet, when I’m home, I don’t want to keep opening windows all the time, especially not in winter.
In summer, mechanical ventilation with heat recovery proves to be useless—I learned that from experience. But in Germany, we only have 3–4 months of summer. For the rest of the year, I really appreciate this simple device.
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