ᐅ Calculate the annual performance factor (seasonal performance factor) based on electricity consumption?

Hi,
I have been operating an air-to-water heat pump in my new build for a year now. Is there a way to calculate whether it is running efficiently?

Elco Aerotop Split 07M-R
Heating capacity 6.4 kW
Seasonal performance factor heating 4.77
Seasonal performance factor domestic hot water 3.58
Overall seasonal performance factor 4.5

Annual consumption heating/hot water = 2630 kWh

The main issue will probably be separating heating from hot water usage, right?
I also cannot find any option in the heating controller to display energy amounts.

Thanks in advance!
M4rvin

Are these values from the heat pump itself? If the overall seasonal performance factor (SPF) is a rough average of heating and domestic hot water, then you can calculate the individual shares.

Difference between heating SPF and hot water SPF = 1.19
Difference between heating SPF and overall SPF = 0.27
Difference between hot water SPF and overall SPF = 0.92

Share of hot water = 0.92 / 1.19 * 100 = 77.3
Share of heating = 0.27 / 1.19 * 100 = 22.7

So maybe 22.7% domestic hot water and 77.3% heating. That would be...
0.227 * 2630 kWh = 597 kWh for hot water and
0.773 * 2630 kWh = 2033 kWh for heating.

Does this help?

Do you have a heat meter?

How much heated area, basement? Sounds like a very low energy consumption and a small house. Or an extremely efficient system!

Without knowing the exact amount of heat, I would say based on the electricity consumption that the system is running very well for an air-to-water heat pump.

The annual performance factor is predetermined, and after one year, I would like to know if it actually matches.

I don’t have a heat meter... at least, I’m not aware of one! 😎

No basement and a small house, that part is correct.