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Home / system #685

Octopus Cosy

Pudsey, Leeds · Detached · 215 m² · 2012 or newer · 9 kW · radiators · installed by Octopus Energy Services

Last 30 daysLast 7 days5 Jan – 4 Feb 2026 (winter reference)1–31 Dec 2025

1–31 Dec 2025

745 hourly rows · MID-class heat meter present: yes
3.71efficiency (COP) over 745 hours, from the heat meter
better than 55% of the metered fleet in January 2026
Electricity used
484 kWh
Heat delivered
1794 kWh (heat meter)
Estimate without heat meter
flow sensor 0.00 · temperature model –
Mean outdoor temperature
– °C · 259 space-heating hours
Flow temperature at 0 °C outside
–
Flow − return while heating
4.2 K
House needs at −3 °C
–
Hot water
28% of electricity, COP 3.48
infoNo configuration faults detected in this window
Keep the current settings. We will alert you if efficiency drifts.

Day by day

electricity per daydaily COP3.0 floor
electricity, kWh per day013262025-12-01: 7.5 kWh, outside – °C2025-12-02: 12.3 kWh, outside – °C2025-12-03: 15.7 kWh, outside – °C2025-12-04: 17.2 kWh, outside – °C2025-12-05: 22.3 kWh, outside – °C2025-12-06: 12.9 kWh, outside – °C2025-12-07: 15.7 kWh, outside – °C2025-12-08: 9.4 kWh, outside – °C2025-12-09: 10.9 kWh, outside – °C2025-12-10: 9.8 kWh, outside – °C2025-12-11: 9.8 kWh, outside – °C2025-12-12: 14.2 kWh, outside – °C2025-12-13: 9.9 kWh, outside – °C2025-12-14: 12.1 kWh, outside – °C2025-12-15: 16.1 kWh, outside – °C2025-12-16: 12.6 kWh, outside – °C2025-12-17: 17.5 kWh, outside – °C2025-12-18: 15.3 kWh, outside – °C2025-12-19: 7.8 kWh, outside – °C2025-12-20: 24.9 kWh, outside – °C2025-12-21: 12.1 kWh, outside – °C2025-12-22: 15 kWh, outside – °C2025-12-23: 16.8 kWh, outside – °C2025-12-24: 16.3 kWh, outside – °C2025-12-25: 19 kWh, outside – °C2025-12-26: 17.2 kWh, outside – °C2025-12-27: 23.2 kWh, outside – °C2025-12-28: 16.3 kWh, outside – °C2025-12-29: 25.5 kWh, outside – °C2025-12-30: 24.3 kWh, outside – °C2025-12-31: 24.3 kWh, outside – °C2026-01-01: 0.1 kWh, outside – °Cdaily COP (heat ÷ electricity)1352025-12-01: COP 4.492025-12-02: COP 3.572025-12-03: COP 3.142025-12-04: COP 3.852025-12-05: COP 3.412025-12-06: COP 4.432025-12-07: COP 3.812025-12-08: COP 4.392025-12-09: COP 4.452025-12-10: COP 4.452025-12-11: COP 4.242025-12-12: COP 3.652025-12-13: COP 3.632025-12-14: COP 4.422025-12-15: COP 4.332025-12-16: COP 3.542025-12-17: COP 3.832025-12-18: COP 4.12025-12-19: COP 3.592025-12-20: COP 3.262025-12-21: COP 4.22025-12-22: COP 4.392025-12-23: COP 3.862025-12-24: COP 3.372025-12-25: COP 3.382025-12-26: COP 3.232025-12-27: COP 3.322025-12-28: COP 3.642025-12-29: COP 3.542025-12-30: COP 3.242025-12-31: COP 3.1612-0112-0512-0912-1312-1712-2112-2512-29
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.