How to Reduce Electric Heating Costs in the UK

Start Here: What Is Driving the Cost?

Before changing settings or buying anything, look for the symptom that best matches your situation.

The AurumPick approach throughout this guide is:

Diagnose → prioritise → act → measure → reassess.

What Actually Drives Electric Heating Costs?

The basic appliance-level calculation is:

Power in kW × hours of use × electricity unit rate = electricity cost

Using Ofgem’s average Direct Debit electricity unit rate of 26.32p/kWh for 1 October to 31 December 2026, a 2kW heater drawing full power for one hour costs approximately:

2kW × £0.2632 ≈ £0.53 per hour

Rate checked: October 2026. This is an average reference rate for Direct Debit customers in England, Scotland and Wales. Your actual tariff can differ by region, supplier, meter and payment method. Source: Ofgem.

That figure is useful, but it is only the starting point. The more useful question is: why does the heater need to run for as long as it does?

A room that loses heat quickly may require more heating. So may a larger heated area, a high target temperature, poor scheduling or inadequate controls.

Thermostatically controlled heaters may also cycle on and off rather than draw their full rated power continuously, so real-world electricity use can differ from a simple wattage calculation.

For a fuller breakdown, see how much electric heaters cost to run in the UK and our guide to electric heater running costs.

The standing charge is not added to individual heater calculations because it is a daily charge for having the electricity supply available rather than a cost created by operating that specific appliance.

1. Reduce Heat Loss First

Before paying to produce more heat, try to keep more of the heat you already produce.

A room that continually loses warmth forces the heating system to replace that lost heat if you want to maintain the same indoor temperature. Energy Saving Trust also notes that an insulated home with well-controlled heating can help reduce heating bills regardless of the heating system used.

Check for obvious draughts

Start with simple observations around:

• external doors;
• window frames;
• letterboxes;
• poorly sealed openings;
• gaps where you can feel noticeable cold air entering.

Suitable draught-proofing may help with small gaps, but do not block ventilation openings that exist for safety or moisture control.

Best Draught Excluders UK

Use curtains sensibly

Closing curtains after dark can help reduce the feeling of cold around windows. Make sure they are not arranged in a way that obstructs a heater or traps heat where the appliance manufacturer requires clear airflow.

Keep the heater’s airflow clear

Furniture or other objects placed too close to a heater can interfere with heat distribution and may also create a safety issue. Follow the clearance instructions for the appliance rather than trying to hide it behind furniture.

Investigate persistent heat loss

If a room is consistently difficult to keep warm, a small draught strip may not address the underlying problem. Loft insulation, walls, floors, glazing and other parts of the building fabric can all affect how quickly a property loses heat.

See how to stop heat loss in a room in the UK.

The principle is simple: fixing the reason heat escapes can reduce the amount of replacement heat you need to buy.

2. Heat Only the Space You Need

Heating less unnecessary space can reduce total heating demand where your system and household circumstances allow it.

If you spend most of an evening in one room, for example, it may not make sense to heat every part of the property to exactly the same level.

That does not mean allowing unused rooms to become extremely cold. Household circumstances, moisture risk and health needs matter.

The objective is therefore: reduce unnecessary heating, not necessary warmth.

If you are deciding whether targeted room heating makes sense for your situation, see our guide to the cheapest practical ways to heat a room in the UK.

3. Cut Unnecessary Heating Runtime

Runtime matters because every additional period during which a heater draws electricity adds to total kWh consumption.

Match heating to occupancy

If a room is empty for predictable periods, appropriate scheduling may prevent direct-acting electric heating from operating when it is not needed.

This could mean adjusting:

• start time;
• finish time;
• weekday and weekend schedules;
• heating periods around actual occupancy.

Investigate heaters that run almost continuously

If a thermostatically controlled heater appears to call for heat for very long periods, investigate why.

Possible reasons include:

• rapid heat loss;
• a high target temperature;
• an unsuitable heater for the room;
• controls that are not being used effectively.

Do not assume that continuous operation automatically means you need a newer heater.

Storage heaters are different

Advice for portable direct-acting heaters should not be applied blindly to storage heaters.

Storage heaters have a charging phase and a heating phase. How and when they charge depends on the heater, its controls and the electricity tariff, so switching them off in the same way as a portable heater can be inappropriate.

For detailed storage-heater control guidance, see Energy Saving Trust.

4. Use Thermostats and Timers Properly

Good controls do not create free heat, but they can help prevent heating from operating when you do not need it.

Useful controls may include:

• thermostat temperature;
• timers;
• daily schedules;
• heating zones;
• different settings for occupied and unoccupied periods.

Do not use the thermostat as an accelerator

Increasing the thermostat setting does not increase the maximum heat output of a fixed-power electric heater.

It can, however, make the heater continue operating until a higher room temperature is reached. Setting the thermostat far above the temperature you actually want is therefore not a shortcut to faster heating.

Use schedules around your routine

If your heater or heating system supports scheduling, match it to when the room is normally used.

The right schedule depends on when people are home, how quickly the room warms, how quickly it loses heat, household comfort needs and any health considerations.

5. Check Whether Your Tariff Fits Your Heating

Reducing electricity consumption is only one part of the cost equation. The amount charged for each kWh also matters.

On a standard single-rate tariff, the same unit rate generally applies throughout the day under the tariff’s terms. Multi-rate and time-of-use tariffs may charge different prices depending on when electricity is used.

Storage heating makes tariff choice particularly important

Storage heaters are one of the clearest examples of heating designed to use electricity during particular charging periods and release stored heat later.

If you have storage heating, examine the electricity tariff and the heater controls together. A portable electric heater used mainly during daytime hours presents a different situation.

The useful question is not simply “Is Economy 7 cheaper?”

It is: “Does this tariff match when my household actually uses electricity?”

6. Measure Your Actual Electricity Use

Estimating consumption is useful. Measuring it can tell you whether your assumptions are correct.

Start with the rated wattage

Check the heater’s rating plate, manual or specification.

A heater rated at 2,000W has a rated power of 2kW. If it drew that full power continuously for one hour, it would use 2kWh.

If you need a refresher, see our guide to what kWh means and how it differs from kW.

Calculate an estimate

Once you know the power and approximate runtime, estimate the running cost using your own electricity unit rate where possible.

For heater-specific estimates, use the Electric Heater Running Cost Calculator UK.

Measure real-world usage where appropriate

Rated power does not always equal continuous real-world consumption. Thermostats may cycle the heating element, and some heaters have multiple power levels.

For suitable plug-in appliances, an appropriate energy-monitoring device may help you observe actual electricity use.

For the full measurement process, see how to track electricity usage at home in the UK.

Best Smart Plugs with Energy Monitoring UK

7. Decide Whether Replacing the Heater Makes Sense

Not automatically.

A newer direct resistance heater using a similar amount of electricity for a similar amount of time will not automatically deliver a dramatic reduction in running cost simply because it is newer.

A replacement may still improve the overall heating setup through:

• better thermostat control;
• better scheduling;
• more appropriate heat distribution;
• improved suitability for the room;
• fewer periods of unnecessary operation.

When replacement may make sense

Consider changing the heater when the existing appliance:

• lacks useful controls;
• is unsuitable for the room;
• is damaged or unsafe;
• cannot be scheduled appropriately;
• no longer suits how the space is used.

A different heating technology may also make more sense for larger or long-term heating requirements.

Heat pumps, for example, use electricity in a fundamentally different way from direct resistance heating and can deliver substantially more useful heat per unit of electricity under suitable conditions. Their installation, costs and property requirements are also very different from buying a portable electric heater.

When replacement may not solve the problem

If the new heater has similar power, runs for similar periods, heats the same poorly insulated room and maintains the same target temperature, the underlying reason for high electricity consumption may still be present.

Fix the reason the heater needs to run before assuming you need a different heater.

Best Energy-Efficient Heaters UK

Which Changes Should You Make First?

If several things could be improved, use the following as a practical starting framework rather than trying everything at once.

This is a practical AurumPick decision framework rather than a universal ranking. Different homes will reveal different priorities.

For one household, changing a timer may be enough to eliminate unnecessary runtime. For another, persistent draughts or poor insulation may be the dominant issue.

Sometimes measuring the heater reveals that it was not the main contributor to the electricity bill at all.

Quick Electric Heating Cost-Reduction Checklist

Reduce waste, not necessary warmth.

Final Takeaway

If your electric heating bill feels too high, do not begin by shopping for another heater.

Start by asking:

• Is heat escaping too quickly?
• Am I heating more space than I need?
• Is the heating running for longer than necessary?
• Are the thermostat and schedule being used properly?

Then estimate or measure the electricity being used, check whether the tariff fits the way the heating operates and only then decide whether changing equipment would solve the problem.

Reducing electric heating costs is often less about finding a supposedly “cheap heater” and more about making sure the heat you are already paying for is being used effectively.