ᐅ Is a Separate Meter and Electricity Tariff for an Air-to-Water Heat Pump Beneficial?

nordanney schrieb:

What power output? They range from 4kW to 8kW heating capacity – at full load, they consume between 800 watts and 1,600 watts per hour.

Sorry, our Daikin has 8kW.

Deliverer schrieb:

That is actually the simplest and ultimately the most accurate method. Some heat pumps "measure" their electricity usage but often forget about standby operation or the pump’s electricity consumption. It’s best to have a meter installed before the circuit breakers on the DIN rail. Of course, only if you’re interested...

Too bad, apparently ours doesn’t do that :-(.

Then I need to talk to the photovoltaic specialist. Since the beginning of the year, I have been diligently recording all the meter readings of the two meters as well as the amount of heat generated by the heat pump to be able to analyze it later. Unfortunately, I don’t fully understand the entire system yet. I have one tariff for heating: a fixed charge of 10.66 euros per month and 20.52 cents per kWh, and one for household electricity: a fixed charge of 11.69 euros per month and 32.57 cents per kWh.

_Ugeen_ schrieb:

Too bad, it seems ours doesn’t do that :-(.

Then a submeter before the heating circuit breaker helps.

You can also estimate the approximate heating consumption for pure heat generation (excluding water heating) by recording the main meter readings daily over the course of a year and comparing heating periods with non-heating periods. This provides an average daily base load (including hot water generation), which is not entirely precise due to seasonal effects (more daylight in winter), but at least gives a rough guideline.
I did it this way for the first few years but then had a submeter installed. Much more convenient and accurate.
It wouldn’t have worked with a photovoltaic system anyway.

Stefan2.84 schrieb:

Household base price €11.69 per month and €0.3257 per kWh.

Either you exclude the bonus in your calculation, or your household electricity is clearly too expensive.

_Ugeen_ schrieb:

We are currently running everything through a single meter.

Just make sure to get a meter box that can accommodate a second meter if needed.

_Ugeen_ schrieb:

Sorry, our Daikin system is 8 kW.

What kind of "palace" actually requires an 8 kW heat pump?
“KfW100”, 300 m² (3,229 sq ft), location?

How to estimate the heating demand without a separate meter, at least approximately, has already been mentioned.