ᐅ Electricity Consumption of Your Heat Pumps – Comparative Figures?

Created on: 5 Jan 2018 00:33
K
KrustyDerClown
Hello everyone,

When searching for reference values for my heat pump, I couldn’t really find much. That’s why I thought of starting this thread, so anyone interested can share their data. I consider the following parameters relevant for comparing values:

Type of heat pump (including exact model, if possible)
House size (sqm)
Electricity consumption
Hot water production via heat pump? Yes/No
Energy efficiency standard of the house (e.g., KFW55, KFW70, etc.)

If there are other values I haven’t considered yet, please feel free to add them.

I hope that by comparing these values, we can get a rough idea whether a heat pump is working well or consuming too much electricity. I understand these can only be approximate figures – it also depends on how the heating is used and how much hot water is consumed.

My values are as follows:

Type of heat pump (including exact model, if possible): Air-to-water heat pump WWP L15 ARS
House size (sqm): 190
Electricity consumption: December 2017 – 745 kWh
Hot water production via heat pump? Yes
Energy efficiency standard of the house (e.g., KFW55, KFW70, etc.): KFW55

Best regards,
Oliver
B
BigFlow
12 Jan 2018 10:09
Used about 420 kWh in December. Underfloor heating via air-to-water heat pump and domestic hot water via exhaust air heat pump.
House: 150 sqm (1,615 sq ft) KfW 55 standard (2017).
Living room and bathroom at 22 degrees Celsius (72°F), bedroom at 18 degrees Celsius (64°F), the rest at 20 degrees Celsius (68°F).
Temperatures were generally mild except for one week.
E
Evolith
12 Jan 2018 10:36
Since operating the heat pump (including the screed drying program), we have consumed just under 2800 kWh.
We have been living in the house since July. It is a KfW70 house with approximately 180 m² (1937 sq ft).
The water storage is set to 50 degrees Celsius (122°F). Temperatures have been mostly mild, except for November.
tomtom7912 Jan 2018 11:03
@Evolith 50 degrees are unnecessary; 45 is enough, we even operate at just 43. And 2700 kW for 6 months is far too much for the mild months.
E
Evolith
12 Jan 2018 11:07
tomtom79 schrieb:
@Evolith 50 degrees are unnecessary, 45 degrees are enough, we even run at 43. And 2700 kWh for 6 months is way too much for the mild months.

We would actually like to run at 55 degrees. But the system simply isn’t designed for that. At 55 degrees, we use a lot of energy. That’s why we only raise the temperature two hours before bathing. Then we turn it down again. But even 45 degrees is definitely too low for me.

Oh, and the screed drying program used 1700 kWh. So since then, we have used just over 1000 kWh.
S
Saruss
7 Feb 2018 21:15
Type of heat pump: Ground source heat pump – Tecalor TTC 05
House size: 240 m² (including basement) (2,583 sq ft)
Electricity consumption: December 276 kWh, annual performance factor unknown (not applicable for a single month)
Domestic hot water production via heat pump? Yes
Energy-efficient house standard: KfW70 (2014)
Calculated heating load: approx. 6 kW (20,472 BTU/h)
L
lumipas
1 Jan 2020 16:58
@Saruss My building project is similar to your description, so I would like to know how deep your borehole for the ground source heat pump is.