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Daikin Altherma 3

Erts, Andorra · Flat / appartment · 67 m² · 2012 or newer · 14 kW · underfloor

Last 7 days

169 hourly rows · MID-class heat meter present: no
3.25efficiency (COP) over 169 hours, from the heat meter
better than 24% of the metered fleet in January 2026
Electricity used
39 kWh
Heat delivered
127 kWh (heat meter)
Estimate without heat meter
flow sensor 3.28 · temperature model 4.38
Mean outdoor temperature
3.1 °C · 43 space-heating hours · cooling 1 kWh removed (0 kWh electricity), kept out of the COP
Flow temperature at 0 °C outside
26.8 °C (curve slope 0.13 per K)
Flow − return while heating
2.4 K
House needs at −3 °C
1.1 kW (unit rated 14 kW) · fit r² 0.36
Hot water
20% of electricity, COP 3.01
infoOnly 43 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 £1 in this window at 0.25 GBP/kWh. An estimate, not a promise.

Day by day

electricity per daydaily COP3.0 floor
electricity, kWh per day0472026-10-31: 1 kWh, outside 5.7 °C2026-11-01: 5.4 kWh, outside 5.8 °C2026-11-02: 6.7 kWh, outside 3.9 °C2026-11-03: 5.2 kWh, outside 2.5 °C2026-11-04: 3.6 kWh, outside 2.9 °C2026-11-05: 7 kWh, outside 2 °C2026-11-06: 7 kWh, outside 0.7 °C2026-11-07: 3.2 kWh, outside 0.4 °Cdaily COP (heat ÷ electricity)1352026-10-31: COP 02026-11-01: COP 4.182026-11-02: COP 3.42026-11-03: COP 2.842026-11-04: COP 3.792026-11-05: COP 3.372026-11-06: COP 2.472026-11-07: COP 3.5810-3111-0111-0211-0311-0411-0511-0611-07
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.