720 hourly rows · MID-class heat meter present: yes
3.68efficiency (COP) over 720 hours, from the heat meter better than 50% of the metered fleet in January 2026
Electricity used
511 kWh
Heat delivered
1883 kWh (heat meter)
Estimate without heat meter
flow sensor 3.65 · temperature model 4.00
Mean outdoor temperature
11.5 °C · 277 space-heating hours
Flow temperature at 0 °C outside
35.1 °C (curve slope 0.07 per K)
Flow − return while heating
3.2 K
House needs at −3 °C
6.4 kW (unit rated 12 kW) · fit r² 0.00
Hot water
4% of electricity, COP 2.95
infoNo configuration faults detected in this window
Keep the current settings. We will alert you if efficiency drifts.
valueReaching the fleet’s January median (3.69) would have saved about £0 in this window at 0.25 GBP/kWh. An estimate, not a promise.
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.