Electric heating consumption - How to heat economically with electricity
Bildquelle: DALL·E (ChatGPT)
Electric heaters are a popular solution for fast, flexible heating, but are often criticized for their power consumption. In this article, you will find out how to calculate the consumption of an electric heater, which factors influence it and which innovative alternatives are available.
How is the consumption of an electric heater calculated?
The power consumption of your electric heater can be calculated using a simple formula:
Consumption (kWh) = Power (kW) × Operating hours (h) × Number of days
Calculation example:
An electric heater with an output of 2 kW that runs for 5 hours a day over a month
consumes:
2 kW × 5 h × 30 days = 300 kWh
At an electricity price of €0.35 per kWh, the costs are:
300 kWh × €0.35 = €105 per month
Image: rawpixel, 123RF Free Images
Example costs for electric heaters
| Heat output (kW) | Operating hours per day | Electricity price (€/kWh) | Monthly costs (€) |
|---|---|---|---|
| 1 | 4 | 0,35 | 42 |
| 2 | 5 | 0,35 | 105 |
| 3 | 6 | 0,35 | 189 |
Operating costs and electricity consumption: example for 50 m²
The consumption and costs of electric heating depend heavily on the building's insulation.
Electricity consumption per year (50 m²):
- New building (well insulated): Approx. 2,500 kWh per year (50 kWh/m²).
- Old building (uninsulated): Approx. 12,500 kWh per year (250 kWh/m²).
Calculation example: Costs for 50 m²
Well insulated apartment (new building):
- Consumption: 2,500 kWh/year
- Electricity costs at 0.20 €/kWh: 500 €/year (approx. 42 €/month)
Poorly insulated apartment (old building):
- Consumption: 12,500 kWh/year
- Electricity costs at € 0.20/kWh: € 2,500/year (approx. € 208/month)
Tip: You can easily calculate the costs of different heating methods for your home with our profitability calculator.
Beregn dine årlige besparelser på oppvarming
What factors influence consumption?
The power consumption of an electric heater is determined by various factors.
- Heater output: The higher the wattage, the more electricity is consumed. A 2000 watt heater requires 2 kWh per hour.
- Room size: Larger rooms require more energy to be heated to the desired temperature.
- Insulation: Well-insulated rooms retain heat better and significantly reduce energy requirements.
- Heating duration: The longer the operating time, the higher the consumption.
- Device type: Efficient models such as infrared heaters or heaters with energy-saving modes reduce power consumption.
Typical consumption values according to room size
- 10-15 m²: 2-3 kWh per day
- 20-30 m²: 4-6 kWh per day
- 40 m² and more: Up to 10 kWh per day
How you can reduce consumption
Conscious use of electric heaters helps to reduce heating costs. Here are some tips:
- Use smart thermostats: These regulate the heating output automatically and prevent unnecessary consumption.
- Use night tariffs: Heaters with a storage core can store cheaper night-time electricity and release heat during the day.
- Improve insulation: Invest in good insulation to prevent heat loss.
- Choose efficient appliances: Models such as infrared heaters or bitcoin heaters save electricity in the long term.
Bitcoin heating - the innovative electric heater
Bitcoin heating is a special form of electric heating that is characterized by its efficiency and added value. It uses the waste heat from Bitcoin miners to heat rooms, thus combining heating and income.
How does a Bitcoin heater work?
During Bitcoin mining, powerful computers generate waste heat that is used for the heating process. This heat is released via a heating system, which means that the energy is used twice - both for mining and for heating.
Advantages of the Bitcoin heater
- Efficiency: Like any electric heater, the Bitcoin heater converts 100% of the electrical energy into heat.
- Double benefit: While heating, users earn bitcoins and benefit from additional income.
- Sustainability: The waste heat is used effectively, which reduces the ecological footprint. In combination with renewable energies, for example electricity from wind power or your own solar system, Bitcoin heating is an environmentally friendly choice.
- Cost reduction: The income from Bitcoin mining reduces operating costs. With a favorable electricity tariff or electricity from your own PV system, you even make a profit and earn money from heating.
- Easy installation: Models such as the 21energy Stove and Stove Pro are designed as plug-and-play solutions and can be easily integrated into existing living spaces.
With a Bitcoin heating system, you combine modern technology with economy and environmental awareness - a unique combination that pays off in the long term.
Ofen 2 kort fortalt
Ofen 2
(Ø 1 år)
Pr. 06.2025
(Ø 4 år)
Pr. 06.2025
Making the right choice
The choice of electric heater depends on your individual requirements. Direct heaters offer flexibility, infrared heaters score points for efficiency and underfloor heating creates comfort. Bitcoin heating is an exciting and sustainable solution for anyone looking for economic benefits as well as efficient heating.
Send forward
Your share can inspire countless others.
