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

Mechanical ventilation with heat recovery 🙂 helps in this case.
The heating has been off since 11 a.m. (at night we had sub-zero temperatures), and it will probably turn back on soon.
The heating pump runs even when the burner is off -> this circulates the heat in the house and prevents it from building up in one place.

I have no idea how a minimal mechanical ventilation system with heat recovery would help in this case. I mean, we have one too, but it doesn’t affect the heating behavior or the room temperature.

In the end, only strict shading and accepting the heating remain effective.

Still, we have extremely good energy consumption since we lowered the heating curve. And it hasn’t noticeably become cooler either. It’s quite surprising, actually. Since March 1st, we have only used 84 kWh of electricity for heating, averaging just 14 kWh per day.

@Bookstar Is your heat pump controlled solely by the outdoor temperature?
Is it not possible to prevent overheating by monitoring or controlling the return flow?

The minimal mechanical ventilation system brings fresh air into our home without the need to wide open windows and helps to reduce the negative impact of higher temperatures. Whether the heating is on or off hardly makes any difference, as the extra warmth mainly comes from the sun.

RotorMotor schrieb:

@Bookstar Is your heat pump controlled solely by outdoor temperature?
Isn't it possible to counteract overheating by monitoring/controlling the return flow temperature?

Via outdoor temperature and return flow. Only at low outdoor temperatures is a higher return flow necessary, so the heating starts regardless of the room temperature.

My concern here is to avoid unnecessary heating costs.

Bookstar schrieb:

About flow temperature and return temperature. Only at low flow temperatures is a higher return temperature necessary, so the heating starts independently of the room temperature.

My goal here is to avoid unnecessary heating costs.

Then you just shouldn’t ventilate by opening windows. This is what one heating day per day looks like for me on the ground floor. The curve on the upper floor is similar, just a few degrees lower. Unfortunately, the bedroom was always too warm at 21.4°C (70.5°F) in the evening. You can’t have everything.

The return temperature this morning around 10 a.m. was 22.0°C (71.6°F). The target return temperature is 24.2°C (75.6°F). Currently, I always increase heating between 11 a.m. and 12 p.m. to 4 K (4 K = 4°C / 7.2°F) above the target return temperature.