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:
It seems like @FF2677 has his own pipeline directly from Putin 😉 Whether it’s 4 or 5.4 euros, it doesn’t really matter 🙂 the 0.60 euro includes the base price 😉
Bookstar schrieb:
Yes, but people always say that heat pumps are as efficient as gas. Even the absolute best performers here don’t achieve such low consumption. That’s really disappointing. Well, it’s no surprise that an air-to-water heat pump isn’t as effective as a gas boiler at very low temperatures... or did someone tell you otherwise?
Gas heating is not dependent on the outside temperature (similar to pellet, geothermal, etc.)
seat88 schrieb:
Whether it’s 4 or 5.4 euros, that doesn’t really matter at first 🙂Well, that’s almost 40% more.
What really doesn’t make much sense, though, is starting a comparison between gas and an air-to-water heat pump during the coldest week of the year. 🙂
@face26 The heat pump is a Fujitsu Waterstage.
Hydraulic unit: WSYA100DG6
Outdoor unit: WOYA080LFCA
Within 24 hours, the heat pump cycled 3 times (compressor on). At the points where the supply temperature dropped, the compressor kept running, but defrosting was active.
The supply temperature is 35°C (95°F).
Curve steepness: 0.50
Curve offset: 1.0
Hydraulic unit: WSYA100DG6
Outdoor unit: WOYA080LFCA
Within 24 hours, the heat pump cycled 3 times (compressor on). At the points where the supply temperature dropped, the compressor kept running, but defrosting was active.
The supply temperature is 35°C (95°F).
Curve steepness: 0.50
Curve offset: 1.0
face26 schrieb:
It seems that @FF2677 has his own pipeline directly from Putin 😉 9 m³ (12 yd³) = approx. 90 kWh
1 kWh costs 4.7 cents here
=> 90 * 4.7 = €4.2
But yes, I would definitely support Nord Stream...
FF2677 schrieb:
9m³ = approx. 90 kWh
1 kWh costs 4.7 cents here
=> 90*4.7 = €4.2 That’s actually a very good price...
But yes, it makes sense. *thumbsup
With an air-to-water heat pump, you need an average seasonal performance factor above 4 (no, I’m not calculating exactly) just to match the gas cost based on energy consumption alone.
However, that leaves out factors on both sides (base fees, maintenance costs, additional need for solar panels, etc.).
There are plenty of comparison calculations, and probably none fit perfectly :-D
On the coldest day of the year, the calculation doesn’t add up if an air-to-water heat pump only reaches 3.5.
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