Hello!
I'll start.
Heated area 200m2 (2,153 sq ft)
KfW 55 standard
Mechanical ventilation with heat recovery
Current outdoor temperature 6°C (43°F)
Heating energy consumption including hot water 35 kWh
Electricity consumption 9 kWh
COP 3.88
I'll start.
Heated area 200m2 (2,153 sq ft)
KfW 55 standard
Mechanical ventilation with heat recovery
Current outdoor temperature 6°C (43°F)
Heating energy consumption including hot water 35 kWh
Electricity consumption 9 kWh
COP 3.88
face26 schrieb:
That’s a very generalized statement... As I mentioned before, there are various comparative calculations and it heavily depends on the specific conditions and what costs I include in the calculation (connection fees, chimney, solar, chimney sweep, etc.).
However, this discussion doesn’t really belong in this thread... If the heat pump were commercially cost-competitive or better from the start, it wouldn’t be subsidized and gas wouldn’t be taxed for its CO2 emissions...
But, this is all off-topic now 🙂
Still, I found the comparisons in this thread very interesting.
The thread is meant for chatting, as long as it's about heating and energy. Last year, I got 500 euros back on my electricity bill because the heat pump performed significantly worse at the beginning. I'm quite satisfied now, but I still have concerns about the durability of these devices. You hear about expensive repairs much more often than with gas systems.
The behavior of my heat pump at these temperatures is really interesting. It’s almost like yesterday. The hysteresis threshold was reached again after nearly 15 hours of pause. However, the heat pump doesn’t start immediately; the compressor needs to warm up first. Yesterday, that took about 1.25 hours. I also think that today, the domestic hot water is produced first, and then the heating operation begins.
That would mean one heating cycle per day, since the pause comes from the heating cycle that started at 9:30 PM and ended at 4:00 AM.
It’s quite odd and probably not very efficient.
That would mean one heating cycle per day, since the pause comes from the heating cycle that started at 9:30 PM and ended at 4:00 AM.
It’s quite odd and probably not very efficient.
Zaba12 schrieb:
Right now, due to massive solar gains, the ground floor is at 25.7°C (78.3°F) and the upper floor at 22.1°C (71.8°F). The heat pump has been off for 8.5 hours and will probably only start running in about 3 hours since it is still 1.0°C (1.8°F) away from the threshold. Outdoor temperature currently -5.5°C (22.1°F).I definitely see that too. That’s what saves us overnight 😉We are now at 145 kWh (heat) over 72 hours, costing me about €8.70.
For me, the local heating network didn’t run smoothly either with the installer. Either the heating curve was completely off and it got too warm or too cold. I have now adjusted it somewhat and can still turn off the heating pump via the home control system.
There are too few “enthusiasts” interested in this, I think over 90% hardly care and still have the fixed setpoint active. Then it just runs on its own, as long as it’s warm. The heating technician can afford to be a bit “sloppy,” since it’s always worked that way so far… He wasn’t really interested in people who care, extra work and no benefit. Well, whatever.
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