Domestic hot water
Heat and electricity to raise daily litres by a temperature difference, then a running cost.
Open a calculatorAppliance cost
Energy is watts/1000 × hours per day × days. Cost is that times the unit price. A nameplate wattage is not the real draw, and a heat-pump tumble dryer is not a 2000 W heater the whole cycle.
Nameplate power on the label — not always the real average draw over a cycle.
Nameplate power on the label — not always the real average draw over a cycle.W
Hours per day at that power — a kettle boiling for four minutes is 4/60 h, not a full hour.
Hours per day at that power — a kettle boiling for four minutes is 4/60 h, not a full hour.Days in the period you are costing — 365 for a full year.
Days in the period you are costing — 365 for a full year.Cost
986 zł
Energy
1,095 kWh
Cost: 986 zł
A kettle that boils for four minutes is 4/60 of an hour, not a full hour at 2000 W.
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An educational estimate. Not medical, tax or credit advice.