Electric heating: costs and efficiency explained

Electric heating is often seen as an expensive choice, but modern systems offer efficiency and long-term benefits that challenge this outdated view. As the UK moves towards decarbonising domestic energy, understanding the true costs and advantages of electric heating becomes crucial for homeowners and renters. This guide explores how electric heating can be a strategic choice for a comfortable, efficient, and future-proof home.

Managing your home's energy can feel complex, especially when considering new heating technologies. Fuse Energy offers clear pricing and in-app usage data to help you understand and control your energy consumption. Click here to switch to Fuse Energy today.

Introduction to electric heating

For decades, gas has been the dominant heating fuel in the UK. However, with growing environmental concerns and advancements in technology, electric heating is gaining traction as a viable alternative. It is not just about switching fuel; it is about embracing smarter, more efficient ways to warm your home.

Why consider electric heating?

Electric heating offers a pathway to a lower-carbon home, aligning with the UK's long-term energy strategy. Modern systems can provide precise control over your heating, allowing you to warm specific zones or rooms as needed. This can lead to greater comfort and potentially more efficient energy use when managed effectively.

Common misconceptions addressed

The primary concern for many is the running cost of electric heating. While electricity unit rates are typically higher than gas unit rates in the UK, comparing them directly without considering system efficiency can be misleading. Modern electric heating technologies, particularly heat pumps, can convert one unit of electricity into multiple units of heat, significantly impacting overall running costs. Effective home insulation and smart controls also play a critical role in maximising efficiency and cost-effectiveness.

Types of electric heating systems

The world of electric heating extends far beyond simple electric radiators. A range of technologies offers different benefits, efficiencies, and suitability for various home types and needs.

Direct electric heaters

These include panel heaters, electric radiators, and fan heaters. They convert nearly all the electricity they consume directly into heat, providing instant warmth. While highly efficient at the point of use, their running costs can be high if used as a primary heating source for an entire home without smart controls or supplementary insulation, due to the higher unit cost of electricity.

Storage heaters

Designed to take advantage of off-peak electricity tariffs, older storage heaters charge up overnight and release heat throughout the day. Modern high-heat retention storage heaters are more efficient, offering better control over heat release and improved insulation to minimise heat loss. They can be a cost-effective option for homes with access to suitable tariffs.

Electric boilers and central heating

Electric boilers heat water that circulates through a conventional wet central heating system, including radiators and hot water cylinders. They are a direct replacement for gas boilers where a gas supply is not available or desired. While highly efficient at converting electricity to heat, their running costs are tied directly to electricity unit rates.

Heat pumps: the efficient choice

Heat pumps, such as air source and ground source models, are considered the most efficient electric heating technology. Instead of generating heat, they transfer it from the air or ground outside into your home. Modern air source heat pumps can achieve a Coefficient of Performance (COP) of 3 or more, meaning they produce at least three units of heat for every unit of electricity consumed. This significantly lowers running costs compared to direct electric heating.

Underfloor heating

Electric underfloor heating systems use heating cables or mats installed beneath the floor. They provide a comfortable, even warmth across a room. While installation can be more involved, they are highly effective for new builds or extensions and can be very efficient when combined with good insulation and smart thermostats.

Understanding electric heating running costs

The running cost of electric heating is a key consideration for many. It is a nuanced picture, influenced by several factors beyond just the price per kilowatt-hour.

Factors influencing cost

Your home's insulation levels are paramount; a well-insulated home retains heat better, reducing the amount of energy needed. The type of electric heating system you choose also matters, with heat pumps offering significant efficiency advantages. Your energy tariff, how you use smart controls, and even your daily habits all contribute to the final bill.

Comparing electricity to gas

Electricity unit rates are generally higher than gas unit rates in the UK. For example, under the July to September 2026 price cap, electricity unit rates are around 26.11p per kWh, while gas is about 7.33p per kWh. However, this does not tell the whole story. A gas boiler might be around 90% efficient, meaning a portion of the energy is lost. In contrast, a heat pump with a COP of 3 delivers an efficiency of 300% or more, effectively making the heat produced much cheaper per unit than if you were relying on direct electric heating or even gas.

The role of efficiency ratings

Efficiency ratings, particularly the Coefficient of Performance (COP) for heat pumps, are crucial. A higher COP means more heat output for less electricity input. While laboratory tests often show COPs of 3.5 or higher, real-world performance can vary based on external temperatures and insulation. Understanding these ratings helps you choose a system that delivers genuine cost savings.

Maximising efficiency with smart solutions

To truly unlock the potential of electric heating, smart technology and good home management are essential. These tools empower you to control your energy use, rather than letting it control you.

Smart controls and thermostats

Smart thermostats and heating controls allow you to program your heating precisely, often on a room-by-room basis. This means you only heat the spaces you are using, when you are using them. Many systems can be controlled remotely via an app, offering flexibility and the ability to react to changing plans, preventing wasted energy. Homeowners often pair this with a smart meter installation to track usage.

Leveraging time-of-use tariffs

Time-of-use tariffs offer cheaper electricity during off-peak hours, typically overnight. Systems like modern storage heaters and heat pumps with thermal stores can be programmed to consume electricity during these cheaper periods, significantly reducing running costs. However, it is important to note that the Radio Teleswitch Service (RTS) for legacy meters, which many older electric heating systems rely on for off-peak tariffs, began its phase-out on 30 June 2025. If you have an RTS meter, your current supplier is responsible for replacing it with a smart meter for free to avoid disruption. Once your RTS meter has been replaced with a smart meter, you can then switch to a modern supplier like Fuse Energy and get the latest smart meter technology and a digital-first experience. You can learn more about how the energy price cap explained impacts your tariff choices.

The importance of home insulation

No matter how efficient your heating system, poor insulation will lead to heat loss and higher bills. Effective home insulation is critical for maximising the efficiency and cost-effectiveness of any electric heating system. This includes loft insulation, cavity wall insulation, double glazing, and draught-proofing. Investing in insulation first often yields the best returns on energy savings.

Electric heating for UK homes: future-proofing

Electric heating is not just a present-day solution; it is a future-proof choice that aligns with the UK's long-term energy goals.

Decarbonisation and the energy transition

The UK is committed to reducing carbon emissions, and decarbonising domestic heating is a major part of this strategy. Electric heating, especially when powered by renewable electricity, plays a central role in this transition. As the grid becomes greener, the environmental benefits of electric heating will only grow.

Electric heating in older properties

Older properties can present unique challenges for electric heating, often due to lower insulation levels. However, with careful planning, electric heating can be successfully integrated. This typically involves upgrading insulation, choosing appropriate system types (like heat pumps or modern storage heaters), and utilising smart controls to manage energy effectively. It is about tailoring the solution to the property's specific needs.

Government support and grants

To encourage the adoption of low-carbon heating, the UK government offers various grants and schemes. The Boiler Upgrade Scheme (BUS)1, for instance, provides grants of £7,500 to help homeowners in England and Wales cover the cost of installing air source, ground source heat pumps, or biomass boilers. It is important to note that an MCS-certified installer applies for this grant on the homeowner's behalf, and the grant value is deducted from the installation quote.

Making the switch to electric heating

Transitioning to electric heating requires careful consideration, but with the right approach, it can be a smooth and beneficial process.

Assessing your needs

Start by evaluating your current home. Consider its size, existing insulation, and your heating requirements. Do you need whole-home heating, or are you looking to supplement an existing system? Understanding your specific needs will help you choose the most suitable electric heating technology.

Installation considerations

Different electric heating systems have varying installation requirements. Heat pumps, for example, may require outdoor units and adjustments to your existing pipework or radiators. Direct electric heaters are simpler to install. Always obtain quotes from qualified installers and discuss projected running costs based on your home's characteristics and your chosen system.

Making the move to electric heating can be a smart choice for your home and the environment. With Fuse Energy, you can manage your energy usage efficiently, with clear billing and support designed for modern homes. Our digital-first approach and 24/7 human support make switching simple. Click here to switch to Fuse Energy today and take control of your energy.

References

1. UK Government. Boiler Upgrade Scheme (BUS)