ᐅ House electricity consumption – what is your usage?

Created on: 6 Oct 2020 06:29
C
chewbacca123
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
seat8812 Nov 2020 17:53
Zaba12 schrieb:

🙂 Definitely. I have decided to clean it only every two weeks now or whenever I feel like having some flame play.
I know the feeling 😀
Y
ypg
12 Nov 2020 18:10
FF2677 schrieb:

When our fireplace runs for 6 hours, the temperature only increases by about 0.8°C (1.4°F). The fireplace is centrally located and distributes heat through the stairwell to the attic.

😱 in our case, the whole house gets about 3-4 degrees warmer with the fireplace...
Zaba12 schrieb:

Turn on the internet, the bedroom temperature should be 18°C (64°F).

And what about the bathroom? Feeling chilly*
B
Bookstar
12 Nov 2020 18:13
seat88 schrieb:

I know that feeling 😀
Why does it even get dirty on your stove? We actually only need to clean it out once a year with ash. The glass cleaner otherwise keeps the glass automatically clean all the time.
seat8812 Nov 2020 18:23
Bookstar schrieb:

Why does it get dirty for you at all? We usually only need to clean it out once a year with ash. The glass cleaner keeps the glass automatically clean most of the time.

Maybe you just have a small tealight burning inside? 😀
No, I have no idea why... It’s just like that.
seat8812 Nov 2020 18:24
FF2677 schrieb:

So I guess we’re neighbors along the Danube 🙂
Here, it’s been foggy for two weeks already...

I also don’t understand how you can heat only with a fireplace. When our fireplace runs for 6 hours, the temperature only rises by about 0.8°C (1.4°F). The fireplace is centrally located and distributes heat through the stairwell to the attic as well. But you definitely can’t warm the basement with a fireplace on the ground floor 🙂

The sun actually heats much more effectively. When it’s sunny and all the external blinds are fully raised, the temperature inside the whole house increases by about 2°C (3.6°F).

But if the sun heats more than the fireplace, something must be wrong, right? Where does all the energy from the wood go in your case? Straight up the chimney?
F
FF2677
13 Nov 2020 13:26
seat88 schrieb:

But isn’t something wrong if the sun heats more than the fireplace? Where does all the energy from the wood go in your case? Straight out the chimney?

I would say the energy input from the sun is greater than from the fireplace 🙂
But I can’t support that with formulas. I quickly found nothing on Google about energy input from the sun, only solar heat gain coefficient (g-value) for windows...
It would be interesting to know, theoretically, which should warm faster:
16 m² (172 ft²) of pure glass surface facing south at a favorable angle in autumn/winter vs. 3–4 kg (7–9 lbs) of firewood
to raise 260 m³ (9,185 ft³) of air (containing about 2.5–3 kg/l (0.15–0.19 lb/ft³) of water vapor) by 1°C (1.8°F).

But in practice, we are very satisfied. When there is too much heat from the sun, the external blinds are closed. And the fireplace can burn for hours without creating a sauna-like environment.
Heating only with the fireplace probably wouldn’t work (but maybe the fireplace would raise the room temperature more if it ran continuously, which we haven’t tested and don’t plan to). Even if we could heat with the fireplace (temperature-wise), it wouldn’t be economically attractive for us because firewood is not cheap where we are, and gas is clearly more affordable in the end.