A 700-watt infrared heater costs approximately 10.96 pence per hour to run, based on an electricity cost of 15.65 pence per 1000W (or 1 kWh).
Understanding the running cost of any electrical appliance, including an infrared heater, depends on its wattage and your electricity tariff. Infrared heaters are known for their efficiency in heating objects directly, rather than the air, which can lead to energy savings compared to conventional convection heaters.
Calculating the Running Cost
To determine the exact cost, we use a simple formula:
Cost per Hour = (Heater Wattage in kW) × (Electricity Cost per kWh)
Let's break down the figures for a 700W infrared heater:
| Parameter | Value |
|---|---|
| Heater Wattage | 700W |
| Heater Wattage (in Kilowatts) | 0.7 kW |
| Cost of Electricity (per kWh) | 15.65 pence |
Using these values, the calculation is as follows:
0.7 kW × 15.65 pence/kWh = 10.955 pence per hour
Rounding this to two decimal places for currency, the cost is 10.96 pence per hour.
Practical Implications of Running Costs
Understanding the hourly cost allows you to estimate daily or monthly expenses based on your usage habits.
-
Daily Cost: If you run your 700W infrared heater for an average of 8 hours a day, the daily cost would be:
10.96 pence/hour × 8 hours = 87.68 pence per day -
Monthly Cost: For consistent use of 8 hours a day over a 30-day month, the monthly cost would be:
87.68 pence/day × 30 days = 2630.4 pence, or £26.30 per month
Factors Influencing Heater Efficiency and Cost
While the calculation provides a base cost, several factors can influence the effective running cost and heating efficiency of an infrared heater:
- Insulation: A well-insulated room will retain heat more effectively, meaning the heater doesn't have to run as long or as often.
- Room Size: A 700W heater is suitable for smaller to medium-sized rooms. Using it in a very large space may mean it runs continuously without achieving the desired temperature, leading to higher overall costs.
- Thermostat Control: Many infrared heaters come with built-in thermostats or can be connected to external ones. Using a thermostat ensures the heater only operates when needed, preventing overheating and unnecessary energy consumption.
- Heating Zones: Infrared heaters are ideal for zone heating, warming specific areas or individuals rather than an entire room. This targeted approach can be more cost-effective than trying to heat an unoccupied large space.
- External Temperature: The colder the outside temperature, the harder your heater will have to work, potentially increasing running times and costs.
By considering these factors and utilizing your heater strategically, you can optimize its performance and manage your energy consumption effectively.
