Air-water heat pump current consumption and data

So here’s an update from me again :)

In the last 10 days, we had an average daily heat amount of 80 kWh and an electricity consumption of 19 kWh. That means the heat pump is operating at a ratio of 1:4, which doesn’t seem too bad.

To reduce the heat amount even further, I lowered the heating curve by 2 degrees. We currently have the problem caused by the sun that we have to ventilate a lot during the day (to avoid overheating at 30 degrees, the window is practically open almost all day) and at night, of course, the heating runs again at 0 degrees.

I want to compensate for this effect with the lower heating curve since the sun warms the rooms sufficiently in the morning.

Let’s see if it works and if I can save electricity :)

Damn... damn me, 19 kWh just for the heat pump in this weather and temperatures. Feels like the house is less efficient than before, right? It’s not the heat pump’s fault. You and the house actually determine the necessary heat demand.

You urgently need photovoltaic!

Mmh... but that still sounds like a lot, doesn't it? The self-regulating effect doesn't do much for you there :p The question is whether adjusting the heating curve is the right step. You have to readjust immediately when it gets colder. You're changing the slope. That means the effect is stronger at colder temperatures than at higher ones. I would rather consider shifting the heating limit or other parameters. Or am I wrong?

We had maybe about 40 kWh on average over the last 10 days including hot water. I think we have a rather high hot water consumption. 2 adults + 2 children. A lot of showering and we all don't just quickly run through the shower. Can you break that down? How much do you need for hot water per day, with how many people? Unfortunately, I only have the internal meter, and it only spits out electricity for hot water. Last 10 days about 3.5 kWh per day. (Out of about 9.5 kWh total consumption heating+hot water)

The day before yesterday/Yesterday average temperature 8.7, shower and full bath used, daily consumption 21.297 kWh

Yesterday/Today average temperature 8.1, daily consumption 12.608 kWh
Gas BWT

Our pump is currently barely running, this morning it started up for a few hours. Electricity consumption for heating and hot water is about 4-6 kWh per week.

Damn... lick my ass, 19kWh just for the heat pump in this weather and these temperatures. It feels like the house is less efficient than before, right? It’s not the heat pump’s fault. You and the house define the required heat demand.

You urgently need photovoltaics!

I don't actually think it's that wrong. February will actually turn out quite well with a total of 700 kWh. It was really damn cold after all, on average a whole 3 degrees below last year! It’s still pretty cold. But certainly, it could be a few kWh less :). For hot water we need on average about 3-4 kWh per day of electricity, even in summer. That leaves 15 kWh currently for heating. Due to the cold nights, that’s somewhat understandable.

Since we will soon have 2 electric cars, and next week will get a sauna as well, I will definitely put the photovoltaics topic on the list for 2022 :)

My average was 16kwh per day since mid-October before the week, I find the consumption quite hefty for the temperatures.