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Home / system #1275

Nibe S2060

Knaphill, Surry · Mid-terrace · 60 m² · 1983 to 2011 · 6 kW · radiators · installed by Urban Plumbers Ltd

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: yes
4.60efficiency (COP) over 169 hours, from the heat meter
better than 94% of the metered fleet in January 2026
Electricity used
25 kWh
Heat delivered
117 kWh (heat meter)
Estimate without heat meter
flow sensor 3.92 · temperature model 4.69
Mean outdoor temperature
8.6 °C · 14 space-heating hours
Flow temperature at 0 °C outside
29.3 °C (curve slope -0.47 per K)
Flow − return while heating
2.6 K
House needs at −3 °C
2.4 kW (unit rated 6 kW) · fit r² 0.22
Hot water
30% of electricity, COP 3.34
infoOnly 14 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.

Day by day

electricity per daydaily COP3.0 floor
electricity, kWh per day0242026-10-31: 2 kWh, outside 10.7 °C2026-11-01: 3.3 kWh, outside 7.8 °C2026-11-02: 2.9 kWh, outside 9.2 °C2026-11-03: 3.6 kWh, outside 9.2 °C2026-11-04: 3.6 kWh, outside 8.8 °C2026-11-05: 4.1 kWh, outside 8.6 °C2026-11-06: 3.9 kWh, outside 8.5 °C2026-11-07: 2.2 kWh, outside 4.1 °Cdaily COP (heat ÷ electricity)1352026-10-31: COP 4.452026-11-01: COP 4.332026-11-02: COP 4.852026-11-03: COP 4.652026-11-04: COP 4.722026-11-05: COP 4.532026-11-06: COP 4.582026-11-07: COP 4.7610-3111-0111-0211-0311-0411-0511-0611-07
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.