Home / system #1018
Daikin Altherma 3
Carlton Barnsley · Semi-detached · 109 m² · 1900 to 1939 · 8 kW · underfloor · installed by Damon Blakemore
Last 7 days
169 hourly rows · MID-class heat meter present: yes
3.10efficiency (COP) over 169 hours, from the heat meter
better than 12% of the metered fleet in January 2026
better than 12% of the metered fleet in January 2026
- Electricity used
- 65 kWh
- Heat delivered
- 203 kWh (heat meter)
- Estimate without heat meter
- flow sensor 2.98 · temperature model 3.66
- Mean outdoor temperature
- 8.8 °C · 33 space-heating hours · cooling 0 kWh removed (0 kWh electricity), kept out of the COP
- Flow temperature at 0 °C outside
- 44.0 °C (curve slope -1.08 per K)
- Flow − return while heating
- 4.3 K
- House needs at −3 °C
- 6.4 kW (unit rated 8 kW) · fit r² 0.00
- Hot water
- 30% of electricity, COP 0.78
infoOnly 33 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 £3 in this window at 0.25 GBP/kWh. An estimate, not a promise.
Day by day
electricity per daydaily COP3.0 floor
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.