721 hourly rows · MID-class heat meter present: yes
3.62efficiency (COP) over 721 hours, from the heat meter better than 45% of the metered fleet in January 2026
Electricity used
90 kWh
Heat delivered
327 kWh (heat meter)
Estimate without heat meter
flow sensor 3.59 · temperature model 3.29
Mean outdoor temperature
10.6 °C · 19 space-heating hours · cooling 0 kWh removed (0 kWh electricity), kept out of the COP
Flow temperature at 0 °C outside
43.7 °C (curve slope -1.36 per K)
Flow − return while heating
2.5 K
House needs at −3 °C
1.7 kW (unit rated 4 kW) · fit r² 0.02
Hot water
89% of electricity, COP 3.59
infoOnly 19 space-heating hours in this window
Space-heating findings need at least 60 hours with the compressor running below 15 °C outside. Choose a winter window or come back during the heating season.
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.
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.