Understanding running costs is one of the most important factors when choosing appliances long term. While some devices consume very little power, others can quietly add a noticeable amount to your energy bill over time.
In this guide, we’ll cover how much it costs to run common household appliances in the UK, using typical wattage and average electricity prices to give realistic estimates. This makes it easier to understand where your energy usage comes from and where you can reduce costs.
If you want a more detailed breakdown of heating costs specifically, take a look at our Ultimate Home Heating Guide.
So, let’s get started.
How Appliance Running Costs Are Calculated
Running costs are based on three main factors: the appliance’s power rating (watts), how long it is used, and the unit price of electricity.
Electricity usage is measured in kilowatt-hours (kWh). To estimate cost, multiply the appliance’s power (in kW) by usage time and the electricity price (typically around £0.28 per kWh in the UK, based on Ofgem’s energy price cap, though this varies by tariff).
Cost = Power (kW) × Time (hours) × Electricity Price (£/kWh)
By combining these three elements – power, usage time and electricity price – you can estimate how much any appliance costs to run and compare different devices on a consistent basis.
Typical Running Costs of Household Appliances
Different appliances vary significantly in how much electricity they use. Devices that generate heat or run for long periods tend to be the most expensive, while smaller electronics typically cost very little even with regular use.
The table below compares common household appliances, their typical power consumption, and estimated running costs in the UK.
| 🔌 Appliance | ⚡ Typical Wattage | 💷 Cost Per Use / Day | 📅 Estimated Annual Cost |
|---|---|---|---|
| Electric heater (2kW, 3 hrs/day) | 2000W | £1.68/day | £613/year |
| Kettle (10 mins/day) | 3000W | £0.14/day | £51/year |
| Washing machine (1 cycle/day) | 2000W | £0.56/use | £204/year |
| Tumble dryer (1 cycle/day) | 2500W | £0.70/use | £255/year |
| Electric oven (1 hr/day) | 2200W | £0.62/day | £226/year |
| Fridge freezer (24/7) | 150W avg | £1.01/day | £369/year |
| WiFi router (24/7) | 15W | £0.10/day | £37/year |
| LED TV (4 hrs/day) | 100W | £0.11/day | £40/year |
| Laptop (6 hrs/day) | 60W | £0.10/day | £37/year |
| Phone charger | 10W | £0.02/day | £7/year |
Which Appliances Cost the Most to Run?
Not all appliances contribute equally to your electricity bill. In most homes, a relatively small number of high-power or high-usage devices account for the majority of energy consumption.
Appliances that generate heat tend to be the most expensive. This includes electric heaters, ovens, kettles, and tumble dryers. These devices draw a large amount of power, even if they are only used for short periods.
On the other hand, appliances that run continuously, such as fridge freezers and routers, can also add up over time. Although their power usage is lower, their constant operation means they contribute steadily to overall energy consumption.
Lower-power electronics like phones, laptops, and LED lighting typically have a minimal impact on electricity bills, even with frequent use.
Understanding this difference makes it easier to focus on the appliances that have the biggest impact on your energy costs.
For a deeper comparison of heating efficiency and long-term costs, see our guide to sustainable heating solutions.
How Usage Time Affects Running Costs
Power rating alone does not determine how expensive an appliance is to run. How often and how long you use it is just as important.
For example, a kettle uses a large amount of power but only runs for a few minutes at a time. In contrast, a fridge freezer uses far less power but runs continuously throughout the day and night.
This is why some low-power appliances can contribute more to your yearly electricity cost than expected, while high-power appliances may have a smaller overall impact if used infrequently.
When comparing appliances, it’s important to consider both power consumption and usage patterns to get a realistic picture of running costs.
How to Reduce Appliance Running Costs
Reducing electricity costs does not require major changes. In many cases, small adjustments to how appliances are used can make a noticeable difference over time.
Use appliances more efficiently
Running washing machines and dishwashers on eco settings or lower temperatures reduces energy consumption without significantly affecting performance. Many modern appliances are designed to operate efficiently when used this way.
Limit high-power appliance usage
Appliances that generate heat, such as electric heaters, tumble dryers and ovens, tend to be the most expensive to run. Reducing how often they are used, or using alternatives where possible, can have the biggest impact on overall costs.
Avoid standby power
Many devices continue to draw power even when not actively in use. Turning appliances off at the wall helps eliminate this unnecessary energy consumption, particularly for TVs, consoles and smart devices.
Take advantage of off-peak electricity
Some tariffs offer cheaper electricity at certain times of day. Running appliances like washing machines or dishwashers during these periods can help reduce overall energy costs.
Focusing on how and when appliances are used is often more effective than trying to reduce usage across everything. Prioritising high-impact appliances will deliver the most noticeable savings.
If you use tools regularly, our guide on how much electricity power tools use explains how usage affects running costs.
Final Thoughts
Electricity costs are influenced by a combination of power usage and how frequently appliances are used. While it’s easy to focus on individual devices, most energy bills are driven by a handful of high-impact appliances.
Heating systems, kitchen appliances, and continuously running devices typically account for the largest share of electricity usage in UK homes. Smaller electronics, while used more often, tend to have a minimal overall impact.
By understanding which appliances use the most energy and adjusting how they are used, it’s possible to reduce electricity costs without significantly changing day-to-day routines.
FAQs
Electric heaters, tumble dryers, ovens and washing machines typically use the most electricity, as they require high power to generate heat.
Heating systems, kitchen appliances and continuously running devices like fridge freezers account for the majority of household electricity usage.
Low-power electronics such as LED lights, phone chargers and laptops are among the cheapest appliances to run.
Thanks for reading our article analysing how much home appliances cost to run.
Feel free to leave a comment below if you have any thoughts or queries that you’d like us to take a look at – we’d be happy to help.
