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Home / system #1153

Grant Aerona HP290

Kenmare, Co Kerry, Ireland · Detached · 240 m² · 1940 to 1982 · 6.5 kW · underfloor · installed by Sean Murphy & Stephen Sinnott

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
5.02efficiency (COP) over 169 hours, from the heat meter
better than 99% of the metered fleet in January 2026
Electricity used
75 kWh
Heat delivered
376 kWh (heat meter)
Estimate without heat meter
flow sensor 5.19 · temperature model 5.72
Mean outdoor temperature
10.2 °C · 98 space-heating hours · cooling 0 kWh removed (0 kWh electricity), kept out of the COP
Flow temperature at 0 °C outside
30.2 °C (curve slope -0.34 per K)
Flow − return while heating
3.3 K
House needs at −3 °C
3.6 kW (unit rated 6.5 kW) · fit r² 0.00
Hot water
25% of electricity, COP 3.71
infoNo configuration faults detected in this window
Keep the current settings. We will alert you if efficiency drifts.

Day by day

electricity per daydaily COP3.0 floor
electricity, kWh per day07152026-10-31: 2.4 kWh, outside 13.3 °C2026-11-01: 10 kWh, outside 11 °C2026-11-02: 13.7 kWh, outside 10 °C2026-11-03: 14.5 kWh, outside 9.9 °C2026-11-04: 14 kWh, outside 9.8 °C2026-11-05: 8.7 kWh, outside 9.6 °C2026-11-06: 11.6 kWh, outside 9.4 °C2026-11-07: 0.2 kWh, outside 8.6 °Cdaily COP (heat ÷ electricity)1352026-10-31: COP 3.792026-11-01: COP 5.112026-11-02: COP 4.862026-11-03: COP 5.312026-11-04: COP 5.152026-11-05: COP 4.982026-11-06: COP 4.9310-3111-0111-0211-0311-0411-0511-0611-07
Daily COP needs a heat meter; days without one show electricity only.

The installed heating curve

one heating hourfitted curve50 °C
203040506067891011121314outdoor 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.