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Stiebel Eltron WPL25-AS

Lichfield, UK · Detached · 202 m² · 1940 to 1982 · 12.5 kW · underfloor · installed by Niche Energy Systems Ltd

Last 7 days

169 hourly rows · MID-class heat meter present: no
64.85efficiency (COP) over 169 hours, from the heat meter
better than 100% of the metered fleet in January 2026
Electricity used
10 kWh
Heat delivered
625 kWh (heat meter)
Estimate without heat meter
flow sensor – · temperature model –
Mean outdoor temperature
9.0 °C · 0 space-heating hours
Flow temperature at 0 °C outside
–
Flow − return while heating
– K
House needs at −3 °C
–
Hot water
no hot-water flag in data
infoOnly 0 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 day0112026-10-31: 0.9 kWh, outside 9.6 °C2026-11-01: 1.4 kWh, outside 9.3 °C2026-11-02: 1.4 kWh, outside 8.5 °C2026-11-03: 1.4 kWh, outside 8.5 °C2026-11-04: 1.4 kWh, outside 9.6 °C2026-11-05: 1.4 kWh, outside 9 °C2026-11-06: 1.4 kWh, outside 9.6 °C2026-11-07: 0.5 kWh, outside 7.5 °Cdaily COP (heat ÷ electricity)1352026-10-31: COP 53.652026-11-01: COP 64.82026-11-02: COP 67.682026-11-03: COP 69.22026-11-04: COP 63.12026-11-05: COP 63.422026-11-06: COP 65.522026-11-07: COP 72.410-3111-0111-0211-0311-0411-0511-0611-07
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.