Hello.
My electricity consumption for my heat pump seems quite high. I have already contacted various professionals: architect, heating engineer, energy consultant, structural engineer, but I can’t shake the feeling that none of them really know what’s going on.
I can give you some key data; I know it’s difficult to make a general statement. But there should be at least an approximate benchmark.
First, about the electricity consumption itself. Last year it was 10,000 kWh (10,000 kWh) for heating and hot water. In the years before, it was between 7,000 and 9,000 kWh (7,000 and 9,000 kWh).
- Our house has heated living space of 180 m² (1,940 sq ft).
- We live at 900 meters (2,953 ft) above sea level, which is quite a cold location, although last winter wasn’t as cold as previous years.
- We have an air-to-water heat pump from Weißhaupt rated at 9 kW.
- The whole house has underfloor heating.
- In the bathroom, there are two additional infrared heaters because the underfloor area was not sufficient. They run for about 1 hour per day in winter—30 minutes in the morning and 30 minutes in the evening.
- Household of 6 people.
The energy certificate states:
Final energy demand 33 kWh/m²a (10.5 Btu/ft²·year)
Primary energy demand 70 kWh/m²a (22.5 Btu/ft²·year)
The certificate is based on a building usage area of 222 m² (2,390 sq ft).
I’m not sure what other information might be needed. Just ask if anything is missing. The electricity consumption just seems very high to me.
My electricity consumption for my heat pump seems quite high. I have already contacted various professionals: architect, heating engineer, energy consultant, structural engineer, but I can’t shake the feeling that none of them really know what’s going on.
I can give you some key data; I know it’s difficult to make a general statement. But there should be at least an approximate benchmark.
First, about the electricity consumption itself. Last year it was 10,000 kWh (10,000 kWh) for heating and hot water. In the years before, it was between 7,000 and 9,000 kWh (7,000 and 9,000 kWh).
- Our house has heated living space of 180 m² (1,940 sq ft).
- We live at 900 meters (2,953 ft) above sea level, which is quite a cold location, although last winter wasn’t as cold as previous years.
- We have an air-to-water heat pump from Weißhaupt rated at 9 kW.
- The whole house has underfloor heating.
- In the bathroom, there are two additional infrared heaters because the underfloor area was not sufficient. They run for about 1 hour per day in winter—30 minutes in the morning and 30 minutes in the evening.
- Household of 6 people.
The energy certificate states:
Final energy demand 33 kWh/m²a (10.5 Btu/ft²·year)
Primary energy demand 70 kWh/m²a (22.5 Btu/ft²·year)
The certificate is based on a building usage area of 222 m² (2,390 sq ft).
I’m not sure what other information might be needed. Just ask if anything is missing. The electricity consumption just seems very high to me.
K
Kenn_schmidt30 Nov 2018 11:53I also believe that the electricity consumption is too high. It might be worth contacting the manufacturer to check if there could be a defect, for example in the meter...
Albbino schrieb:
Flow temperature 30.4°C (87°F)
Return temperature 27.3°C (81°F)
I’ve attached a few pictures of the spacing. The spacing seems reasonably okay.
At what outdoor temperature are these values measured?
Otherwise:
1. Fully open the ERR or remove the actuators completely. Then carry out the hydraulic balancing.
2. If there is a bypass valve, close it afterwards.
3. For a heating buffer tank, adjust the system to the appropriate flow rates.
4. Without a heat meter, it is difficult to narrow down the problem. You won’t know if the heat pump is inefficient or if you actually have such a high heat demand.
Regards
Nika