Air-water heat pump current consumption and data

Only 2ww charges are good; with the settings from the factory service, it was 5-6 per day. 50 degrees and 2k hysteresis.. and circulation on comfort.

what's the bottom line for you? In the 2-3 weeks a year when the conditions prevail, you don't even save enough for a small cheese pizza with a soft drink.

In the months of December, January, and February, you usually have over 80% of the annual consumption. A load of hot water currently takes about 1.3 kWh for us, and we usually have two in 24 hours. Whether I get them from the roof or from the socket is totally irrelevant.

I can almost confirm that too; it's not the hot water that hits hard but the heating operation. At 48 degrees with 7K, for example, I have 1 kWh consumption for one load. So every additional load costs me either €0.258 from the grid or €0.04 via photovoltaics.
What really hurts is the heating operation over weeks on grid supply.

So 1kw 365 days and then x2 or 3 charges makes a lot.

Likewise the err with 25 pieces at 1w per day.

Then the circulation pump that runs 24h

Yeah, if you assume that you can always heat the hot water with photovoltaics 365 days a year ;) Besides, at that moment you also lose the feed-in. We pay 24.5 cents per kWh and get 10 cents, so the difference is only 14.5 cents.

In summer, with wonderfully warm weather, the heat pump uses well under 1 kW. And especially in winter, when it’s colder, you basically have no power from the roof or my modulating pump runs continuously. The difference between just heating hot water when it’s needed (hot water 48°, 6K hysteresis) or only at noon will realistically not be nearly that big. Two-thirds of our hot water cycles happen during the day anyway and therefore automatically benefit from the photovoltaics, if there is power coming from the roof at that time.

People, what do your current consumptions look like? Yesterday, I used 21 kWh at an average temperature of -1 degree. I believe I would have easily used 30 kWh before and actually did.

Folks, what do your current consumption levels look like? Yesterday I used 21 kwh at an average temperature of -1 degree. I believe I used to easily consume 30 kwh before.

I believe that too. 21 kWh with a basement at -1 degree seems quite okay to me.

We end today with 19 kWh total house consumption, of which 670wh is grid usage.