ᐅ Is the annual energy consumption of the air-to-water heat pump reasonable?

Basement heated? Annual performance factor known? Operating hours of the heating element known? Room temperatures and hot water usage? Buffer tank present?

Seems like quite a lot at first.

LincolnHawk86 schrieb:
6300 kWh electricity
Individual room control
Household electricity runs through a separate meter.
Heating element activated

then check the operating hours of the compressor and the heating element, then you will have your answer.

We don’t know our actual consumption, but we pay 80€ per month for 240 m² (2 units) with 7 people in the house for electricity for the pump. We also have solar thermal collectors on the roof for hot water.

Depending on the conditions, this might not be so unrealistic after all.
Here are a few examples that can lead to high energy consumption:
- Hot water set to 60°C (140°F) with a daily shower of about half an hour
- Heating the basement above 22°C (72°F) (possibly poorly insulated in a KfW70-standard house)
- Poorly adjusted pump
- Individual room control
- No ventilation system, meaning a lot of manual airing
- And so on...

Assuming you have a relatively poor annual efficiency factor (AZ) of 3, you could end up with about 19,000 kWh of heating energy. With high hot water consumption, that’s roughly 12,000 to 13,000 kWh for the house, which might be realistic.

However, if you use water sparingly, set your hot water to 45°C (113°F), don’t heat the basement above 18–19°C (64–66°F), and keep other rooms below 22°C (72°F), the consumption could be considerably lower…

There is also a lot of heated area... it is definitely not completely out of the ordinary.