ᐅ Your current heating consumption

Created on: 7 Dec 2016 21:34
N
Nafetsm
Hello,

I’m interested in knowing your current daily heating consumption.

Please provide it either in kWh for heat pumps or in m³ for gas, along with the room temperature, heated area, and energy standard (e.g., Energy Saving Ordinance 2016, KFW70, KfW 55, etc.).

I’m curious about your consumption at the current temperatures.
S
Saruss
12 Apr 2018 09:29
Musketier schrieb:
I’m also envious of those values. No idea how Saruss achieves them. Either none of them take warm showers, their ancestors come from Greenland, or he’s cheating somehow, for example with a fireplace.
No fireplace, consistent room temperature of 22°C (72°F) throughout. Four people, especially wife and children, take plenty of warm showers and baths. My borehole seems to work well though, because I still have very high brine temperature (inlet) even after winter.

Otherwise, not all KfW70 is the same. For example, we have a double-shell masonry wall, meaning a facing brick, then insulation (advantage: very little air movement on the insulated wall), a ventilation system with heat and humidity recovery, and airtightness at Passive House level. With this technology, it could almost qualify as KfW55, but we made some decisions too late to update the applications. Also, the KfW rating is calculated based on a standard house—if you have, for example, more window area, it results in the same KfW rating but significantly different energy demand.

Everything else is optimized: heating curve, no night setback, no automatic ventilation reduction (ERR).
Musketier12 Apr 2018 09:47
That puts things into perspective somewhat.
Saruss schrieb:

Otherwise, everything is optimized: heating curve, no night setback, no ERR..

I’ve done all that as well, but I’m nowhere near that range. However, we don’t have a deep borehole; instead, we use ground collectors (surface collectors).
S
Saruss
12 Apr 2018 13:53
Musketier schrieb:
That puts it into perspective a bit.



I did all of that as well, but I don’t even come close to that range. However, we don’t have deep drilling but surface collectors.
Those are of course somewhat weather-dependent too; for example, if the ground is too dry before or during frost periods, they deliver less. Our drill hole is also quite generous in length when measured by extraction capacity. For the planning, I simply added 30% because the price per meter of drilling directly from the company isn’t that high compared to the fixed costs (unless the drilling takes one day longer than planned).