Is it expensive to run an electric fire?
Electric fires have become a popular choice for modern homes, offering style, warmth, and convenience without the ongoing maintenance of a traditional fireplace. For many households, a common question arises: is it expensive to run an electric fire? The short answer is: it depends on usage, the model you choose, and your electricity tariff. In this post, we’ll break down the costs, the factors that influence them, and practical tips to keep running expenses reasonable while still enjoying the comfort of electric fires.

Introduction: why cost awareness matters
Electric fires provide heat on demand, with the flexibility to switch off at the wall or set a timer. Unlike gas or solid fuel fires, there’s no need to stock fuel or manage ventilation, which already makes them economical in terms of convenience. However, electricity is typically more expensive per kilowatt hour than some other heating fuels, so understanding how your usage translates to cost is essential. This guide will help you estimate running costs and optimise efficiency.
How electric fires are billed
Electric fires consume electricity just like any other appliance. The cost you pay depends on:
- Your electricity tariff (per kWh rate)
- The power rating of the fire (usually measured in kilowatts, kW)
- How long you run the fire or use its heat output
- The efficiency of the model (though most modern electric fires convert electricity to heat very efficiently)
Most electric fires have a heat output rating somewhere in the range of 0.5 kW to 2 kW. Some larger models with supplementary features may be higher, but typical room heaters sit within this band. If you know your tariff and your fire’s wattage, you can estimate costs with a simple calculation.
Cost example:
- If your electric fire runs at 1 kW and you operate it for 6 hours, the energy used is 6 kWh.
- With a tariff of 20 p per kWh, the running cost would be about £1.20 for that session. Note: Prices vary by region and supplier, so adjust the figures to reflect current rates.
Factors that influence running costs
1) Heat output and usage patterns
Electric fires are very controllable. If your goal is to heat a single room, you’ll typically use a lower heat setting for shorter periods. Prolonged high heat will increase costs, while moderate, occasional use can keep expenses sensible. Consider using the fire for ambience and supplementary warmth rather than as the primary heat source.
2) Thermostatic control and zoning
Many electric fires come with built-in thermostats. Use them to maintain a comfortable temperature without overheating. Zoning your heating system to warm only occupied rooms can significantly cut costs, especially if you have a larger home.
3) Overnight and timer settings
Using a timer or night-time mode can reduce overnight running costs. If you want a pre-warmed room before waking up, morning heat can be set to come on a little earlier but switch off automatically, saving energy.
4) Appliance efficiency and technology
Modern electric fires often incorporate efficient LED flame effects and accurate heat delivery. While the visual features are nice, the core cost is still the electric power used for heating. Look for models with good efficiency ratings and features like fan-assisted heating, which can spread heat more evenly and allow for lower power usage.
5) Insulation and room size
The size and insulation of the room matter. A well-insulated room will retain heat longer, meaning your electric fire can run for a shorter duration to achieve the same comfort level. In poorly insulated spaces, you may need more energy to maintain warmth.
Comparing electric fires to other heating options
Electric fires vs. central heating
If you already have a central heating system, using an electric fire as a supplementary heat source can reduce the load on your boiler, potentially saving money. However, central heating often relies on gas or heating oil, which can be cheaper per kWh than electricity in many regions. The choice depends on your home, energy prices, and how often you need heat.
Electric fires vs. gas fires
Gas fires typically have lower running costs per hour than electricity, but they require gas supply, flue or venting, and regular maintenance. Electric fires have lower emissions, simpler installation, and easier maintenance, making them cost-effective in terms of hassle and safety, especially in homes without a gas supply.
Renewable energy considerations
If you have solar panels or access to low-cost renewable electricity, running an electric fire can be even more economical. Daylight generation during peak sun hours can offset daytime electricity use, reducing overall running costs.
Practical tips to minimise running costs
- Choose the right size: Pick an electric fire with a heat output appropriate for the room. A 1 kW or 1.5 kW unit is often sufficient for a standard living room.
- Use thermostats and timers: Set a sensible temperature and timer to avoid unnecessary heating.
- Enhance insulation: Draft-proof doors and windows, thick curtains, and added insulation reduce heat loss and lower energy needs.
- Zone heating: Only heat occupied rooms; close doors to unused spaces.
- Leverage ambience without heat: Many electric fires offer flame effects with or without heat. Use the aesthetic feature without turning up the heat to save electricity.
- Compare tariffs: Shop around for competitive electricity plans with lower daytime or off-peak rates if you use heat during those periods.
Real-world scenarios
A small living room (about 15-20 square metres) with winter temperatures around 0-5°C might efficiently use a 1 kW electric fire for a few hours in the evening, supplemented by clothing and blankets. In a larger, poorly insulated space, you might need a higher output or longer running times, increasing costs. Personal habits, house layout, and insulation all play a significant role in determining actual bills.
Final thoughts
Electric fires offer a balance of aesthetics, ease, and warmth. While electricity costs can add up if you rely on them as the primary heat source, careful usage, smart thermostats, and good room insulation can keep running costs reasonable. By understanding your tariff, choosing an appropriately sized model, and employing practical energy-saving strategies, you can enjoy the warmth and atmosphere of electric fires without breaking the bank.
If you’re weighing options, remember that electric fires often win on safety and convenience, with lower maintenance and no venting requirements. With mindful usage and smart choices, running an electric fire can be a cost-effective part of a comfortable, well-heated home.