721 hourly rows · MID-class heat meter present: yes
4.43efficiency (COP) over 721 hours, from the heat meter better than 92% of the metered fleet in January 2026
Electricity used
815 kWh
Heat delivered
3610 kWh (heat meter)
Estimate without heat meter
flow sensor 4.47 · temperature model 3.86
Mean outdoor temperature
7.7 °C · 663 space-heating hours
Flow temperature at 0 °C outside
38.5 °C (curve slope -0.51 per K)
Flow − return while heating
4.9 K
House needs at −3 °C
7.0 kW (unit rated 7 kW) · fit r² 0.47
Hot water
10% of electricity, COP 3.69
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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.