ᐅ Air-to-Water Heat Pump: Current Consumption and Data

T_im_Norden schrieb:

@Ötzi Ötztaler
It also depends on the room temperatures.
Are you staying within your heating load calculation?

The room temperature is around 22 degrees Celsius (72°F).

Yes, roughly within the heating load calculation, although it is difficult to determine precisely due to defrosting cycles and fluctuations in outdoor temperatures.

But in general, I would be interested to know if your solid construction actually absorbed more heat during the first winter than in the following years.

Ötzi Ötztaler schrieb:

But generally, I am curious whether your solid construction actually absorbed more heat during the first winter compared to the following years.

If anyone can share their experience on this, I would be interested as well.

According to the internal meter, 2606 kWh of heat was used for heating and hot water in January.
Electricity consumption recorded by the internal meter was 542 kWh (only a single household meter, no separate one for the heat pump yet; I might install one later).
Total electricity for the house in January was 920 kWh.

We moved into this single-family house in November. It has 140 m² (1506 sq ft) of living space plus 78 m² (840 sq ft) of basement within the thermal envelope. About half of the basement is heated to around 18°C (64°F). The building complies roughly with energy saving regulations for a house close to KfW 55 standard.
I have no idea what to compare this to or how to evaluate these figures.
At least, I don’t think it’s a total disaster...

Moved in mid-December
BWT, 150 m2 (1,615 sq ft), energy saving ordinance with slightly improved insulation, indoor temperature between 18 and 23 degrees Celsius (64 and 73 degrees Fahrenheit).
November 1579 kWh
December 1666 kWh
January 1671 kWh

Not really suitable for a direct comparison, as the outdoor temperatures were certainly different.

At least it gives an idea of what is achievable.

@face26
Why is only half of it heated?

T_im_Norden schrieb:

@face26
why only heat half of it?

That was a bit poorly phrased.

The basement includes a hobby room, workshop, hallway, storage room, and utility room.
The hallway, hobby room, and utility room are around 18°C (64°F) and make up about half of the space. These rooms are heated at the same level. The rest is closed off but estimated (not measured) to be around 16°C (61°F).
Probably a rough calculation because the rest of the rooms help heat the entire basement.
Would you provide the other rooms with at least a minimum flow then?
I’m still unsure how to handle the basement heating.

@face: please specify the federal state of the house location, as energy consumption can vary by up to 50% from north to south due to different heating requirements (east/west orientation will also likely have an impact).