Heatproof
Deutsch
Sprache
DeutschEnglish
Darstellung
DunkelHellSystem
Ansicht
Einfach: nur der Rechnungs-CheckVollständig: alle Seiten
Home / system #70

Samsung Gen 6

Carlby, STAMFORD · Detached · 184 m² · 1940 to 1982 · 12 kW · radiators · installed by Forerunner (Electronic) Ltd

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

5 Jan – 4 Feb 2026 (winter reference)

721 hourly rows · MID-class heat meter present: no
2.41efficiency (COP) over 721 hours, from the heat meter
better than 2% of the metered fleet in January 2026
Electricity used
237 kWh
Heat delivered
571 kWh (heat meter)
Estimate without heat meter
flow sensor 2.33 · temperature model 2.80
Mean outdoor temperature
5.0 °C · 118 space-heating hours · cooling 17 kWh removed (3 kWh electricity), kept out of the COP
Flow temperature at 0 °C outside
41.9 °C (curve slope 0.64 per K)
Flow − return while heating
3.9 K
House needs at −3 °C
3.4 kW (unit rated 12 kW) · fit r² 0.02
Hot water
no hot-water flag in data
seriousWinter efficiency 2.41 is below the 3.0 floor used for German subsidies
Ask the installer for a commissioning check; the causes are usually flow temperature, hot water settings, or sizing, all listed below.
infoUnit is rated 12 kW but the house needs about 3.4 kW at −3 °C
Oversizing causes cycling in mild weather. Cannot be fixed cheaply now, but the curve and minimum run time can limit the damage.
noteOwner’s note on the source site: “Outside temperature error”
valueReaching the fleet’s January median (3.69) would have saved about £21 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 day012242026-01-05: 1.2 kWh, outside -0.9 °C2026-01-06: 0.4 kWh, outside -0.6 °C2026-01-07: 0.3 kWh, outside 3.5 °C2026-01-08: 0.8 kWh, outside 2.4 °C2026-01-09: 0.3 kWh, outside 3 °C2026-01-10: 0.4 kWh, outside 0.8 °C2026-01-11: 5.1 kWh, outside 3.1 °C2026-01-12: 19.5 kWh, outside 9.3 °C2026-01-13: 19.8 kWh, outside 7.5 °C2026-01-14: 2.9 kWh, outside 2.5 °C2026-01-15: 23 kWh, outside 6.5 °C2026-01-16: 14.2 kWh, outside 4.8 °C2026-01-17: 22 kWh, outside 6.7 °C2026-01-18: 24 kWh, outside 6.3 °C2026-01-19: 15.2 kWh, outside 7.3 °C2026-01-20: 16.8 kWh, outside 8.4 °C2026-01-21: 10.8 kWh, outside 7.3 °C2026-01-22: 24.3 kWh, outside 7.6 °C2026-01-23: 10.2 kWh, outside 7 °C2026-01-24: 18 kWh, outside 6.1 °C2026-01-25: 0.3 kWh, outside 5.7 °C2026-01-26: 0.5 kWh, outside 3.4 °C2026-01-27: 0.2 kWh, outside 5.9 °C2026-01-28: 3.2 kWh, outside 4 °C2026-01-29: 0.5 kWh, outside 4 °C2026-01-30: 2.7 kWh, outside 5.7 °C2026-01-31: 0.2 kWh, outside 6.9 °C2026-02-01: 3.1 kWh, outside 7.2 °C2026-02-02: 0.3 kWh, outside 6.2 °C2026-02-03: 0.4 kWh, outside 3.2 °C2026-02-04: 0 kWh, outside 2.7 °Cdaily COP (heat ÷ electricity)1352026-01-05: COP -1.092026-01-08: COP -0.632026-01-11: COP 1.92026-01-12: COP 2.922026-01-13: COP 2.882026-01-14: COP 1.412026-01-15: COP 2.682026-01-16: COP 2.142026-01-17: COP 2.742026-01-18: COP 2.432026-01-19: COP 2.562026-01-20: COP 2.532026-01-21: COP 2.162026-01-22: COP 2.242026-01-23: COP 1.762026-01-24: COP 1.952026-01-28: COP 1.52026-01-29: COP -2.132026-01-30: COP 1.612026-02-01: COP 1.7801-0501-0901-1301-1701-2101-2501-2902-02
Daily COP needs a heat meter; days without one show electricity only.

The installed heating curve

one heating hourfitted curve50 °C
2030405060-4-2024681012outdoor 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.