721 hourly rows · MID-class heat meter present: yes
4.42efficiency (COP) over 721 hours, from the heat meter better than 92% of the metered fleet in January 2026
Electricity used
274 kWh
Heat delivered
1210 kWh (heat meter)
Estimate without heat meter
flow sensor 4.38 · temperature model 4.94
Mean outdoor temperature
11.3 °C · 287 space-heating hours · cooling 3 kWh removed (3 kWh electricity), kept out of the COP
Flow temperature at 0 °C outside
32.0 °C (curve slope -0.17 per K)
Flow − return while heating
3.1 K
House needs at −3 °C
4.2 kW (unit rated 7.7 kW) · fit r² 0.03
Hot water
27% of electricity, COP 3.33
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Day by day
electricity per daydaily COP3.0 floor
Daily COP needs a heat meter; days without one show electricity only.
The installed heating curve
one heating hourfitted curve50 °C
Each point is one hour of space heating. Lower and flatter is cheaper; well-set radiator systems sit around 35–42 °C at 0 °C outside.
Public system published by its owner on HeatpumpMonitor.org. Cycling (starts per hour) comes from the site’s 365-day statistic. Findings use installer rules of thumb; see methodology.