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Home / system #529

Mitsubishi Ecodan

Princetown, Devon · Semi-detached · 100 m² · 1940 to 1982 · 6 kW · radiators · installed by Reco Energy

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

Last 7 days

169 hourly rows · MID-class heat meter present: no
4.11efficiency (COP) over 169 hours, from the heat meter
better than 84% of the metered fleet in January 2026
Electricity used
67 kWh
Heat delivered
274 kWh (heat meter)
Estimate without heat meter
flow sensor 3.86 · temperature model 3.84
Mean outdoor temperature
7.1 °C · 72 space-heating hours
Flow temperature at 0 °C outside
38.6 °C (curve slope -1.05 per K)
Flow − return while heating
3.2 K
House needs at −3 °C
4.9 kW (unit rated 6 kW) · fit r² 0.07
Hot water
27% of electricity, COP 3.32
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 day06122026-10-31: 3.4 kWh, outside 9.7 °C2026-11-01: 8.1 kWh, outside 7.7 °C2026-11-02: 8.1 kWh, outside 7.8 °C2026-11-03: 9.4 kWh, outside 6.7 °C2026-11-04: 12.1 kWh, outside 5.9 °C2026-11-05: 11.4 kWh, outside 5.8 °C2026-11-06: 12.4 kWh, outside 6.8 °C2026-11-07: 2 kWh, outside 7.1 °Cdaily COP (heat ÷ electricity)1352026-10-31: COP 52026-11-01: COP 4.022026-11-02: COP 4.312026-11-03: COP 4.212026-11-04: COP 4.232026-11-05: COP 4.072026-11-06: COP 3.562026-11-07: COP 4.5110-3111-0111-0211-0311-0411-0511-0611-07
Daily COP needs a heat meter; days without one show electricity only.

The installed heating curve

one heating hourfitted curve50 °C
203040506013579111315outdoor temperature, °Cflow temperature, °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.