Hello everyone,
Since I’m a bit unsure and our installer said everything is normal, I’m reaching out to you. We have been living in our newly built house since early 2021. It is a traditionally constructed house built to the KFW55 standard. The heated living area is about 140 m² (1507 sq ft).
We have underfloor heating throughout and a Dimplex air-to-water heat pump (LA 9S-TU). In 2021, the heat pump’s electricity consumption was 5715 kWh.
To be honest, we expected the electricity consumption to be somewhat lower. However, finding comparison values is quite difficult.
What are your experiences with the electricity consumption of your heat pump? Is this realistic?
Thanks very much for sharing your experience!
Best regards,
Michael
Since I’m a bit unsure and our installer said everything is normal, I’m reaching out to you. We have been living in our newly built house since early 2021. It is a traditionally constructed house built to the KFW55 standard. The heated living area is about 140 m² (1507 sq ft).
We have underfloor heating throughout and a Dimplex air-to-water heat pump (LA 9S-TU). In 2021, the heat pump’s electricity consumption was 5715 kWh.
To be honest, we expected the electricity consumption to be somewhat lower. However, finding comparison values is quite difficult.
What are your experiences with the electricity consumption of your heat pump? Is this realistic?
Thanks very much for sharing your experience!
Best regards,
Michael
H
HilfeHilfe14 Dec 2022 06:24In 2021, we had about 200 m² (2,150 sq ft) of living space and 5 people all working from home full-time, and used 6,000 kWh.
We also have solar thermal collectors, so your estimate seems about right.
We also have solar thermal collectors, so your estimate seems about right.
WilderSueden schrieb:
Please separate the electricity and heat consumption into hot water and heating. But it sounds like quite a lot at first. The heating demand should be around 5000 kWh of heat = about 1500 kWh of electricity. Hot water is additional.
In a new building, there is also some residual moisture, which increases the heating demand. Hm… unfortunately, I did not record the heat quantities last year. I have only been tracking them since the beginning of September this year.
The values for this year:
September: 55 kWh heating / 102 kWh hot water
October: 138 kWh heating / 101 kWh hot water
November: 848 kWh heating / 150 kWh hot water
December: 835 kWh heating / 131 kWh hot water
As a forecast for 2022, the meter app (EHW+ Android) gives me the following values for 2022:
Heat amount for heating: 5707 kWh
Heat amount for hot water: 1465 kWh
We heated the living areas to 21°C (70°F), bathroom around 22°C (72°F).
Our hot water temperature is set to 45°C (113°F).
Currently, the target flow temperature is 32.4°C (90°F) at an outside temperature of -0.6°C (31°F).
Dogma schrieb:
Does that consumption include the screed heating phase? If not, I would find a consumption of around 17kW quite high for an estimated annual performance factor of 3.
We also built in 2016 (I think it was under the 2014 Energy Saving Ordinance back then) but we improved the insulation and the exterior walls, among other things.
Consumption is about 10kW with a room temperature of 22–24°C (72–75°F). The screed heating phase should not be included in that consumption, as we already had it in 2020.
Offtopic schrieb:
There is a database, try googling "web-based heat pump consumption database."
Still, something seems off with the house size and energy consumption. Is the electric heating element running continuously? Thanks for the tip, I will look for comparison values there. I don’t think the electric heating element runs that often. However, I’m not sure which value corresponds to the heating element; I believe most of the run time is due to thermal disinfection.
2nd heat generator: 153 hours (since the heating system was activated around October 2020)
Flange heater: 238 hours (since the heating system was activated around October 2020)
D
Daniel-Sp14 Dec 2022 22:25Hello.
It would be helpful if you could compare the amount of heat generated with the electricity consumed. That way, we can draw more conclusions.
Best regards
Currently – 10°C (14°F)... Brrr
It would be helpful if you could compare the amount of heat generated with the electricity consumed. That way, we can draw more conclusions.
Best regards
Currently – 10°C (14°F)... Brrr
W
WilderSueden14 Dec 2022 23:10Daniel-Sp schrieb:
Currently - 10°C (14°F)... BrrrI’d prefer that over today’s weather with temperatures just below freezing, wind, and heavy rain. Although the -17°C (1°F) on Monday morning probably wasn’t much fun either 😉mime270 schrieb:
As a forecast for 2022, the meter app (EHW+ Android) gives me the following values for 2022:
Heating energy: 5707 kWh
Hot water energy: 1465 kWhThat actually sounds pretty reasonable. However, I don’t understand how about 7000 kWh of heat would result in only 5700 kWh of electricity. That would mean the heat pump has a seasonal performance factor of only 1.22. Do you have the monthly electricity consumption figures for this year?
Similar topics