First step: compare consumption with floor area
Divide annual electricity consumption by the heated floor area. An estimated guideline for a well-running heat pump home is roughly 50–90 kWh/m² per year. A significantly higher figure is reason to investigate further, but doesn't automatically mean a fault.
The three most common causes
1. The heating curve is too high and the flow temperature exceeds demand. 2. The electric backup heater runs when the compressor could manage alone. 3. The hot water temperature or cycle frequency exceeds what's needed.
A fourth cause that often emerges is unmeasured heat loss — ventilation without heat recovery, air leaks, or insufficient attic insulation.
What we check in the analysis
Our assessment links consumption, floor area, temperatures and your answers, and flags inconsistencies. The result is an estimate — determining the exact COP requires a heat meter.