How much does it cost to use an electric heater?

How much does it cost to use an electric heater? (simple calculation)

The basic formula is this:
Consumption (kWh) = (Power (W) × Hours) ÷ 1000
Then: Cost (€) = Consumption (kWh) × price per kWh .

Use your actual €/kWh rate (as shown on your bill/contract). The examples below are for illustrative purposes only.

1) Cost per hour (most searched on Google)

  • 1000 W (1 kW) → 1 kWh per hour

  • 1500 W (1.5 kW) → 1.5 kWh per hour

  • 2000 W (2 kW) → 2 kWh per hour (at maximum power)

2) Practical examples (with step-by-step calculations)

Example A — 1000W for 3 hours/day

1 kW × 3 h = 3 kWh/day
Cost/day = 3 × (€/kWh)

Example B — 1500W for 4 hours/day

1.5 kW × 4 h = 6 kWh/day
Cost/day = 6 × (€/kWh)

Example C — 2000W for 2 hours/day

2 kW × 2 h = 4 kWh/day
Cost/day = 4 × (€/kWh)

3) How to save money without "getting cold"

  • Use a thermostat and avoid a constant "maximum" setting (peaks consume more energy).

  • Heat the room you are in (with the door closed) instead of the entire house.

  • If you have a reversible air conditioner (heat pump), DECO says it can be one of the most efficient/economical ways to heat your home (and use the portable heater only as a backup).

FAQ

How much does a 2000W heater consume per hour?
At maximum power, it consumes 2 kWh per hour ; for cost, multiply by the price per kWh.

How do I calculate energy consumption in kWh?
Consumption (kWh) = (W × hours) ÷ 1000.