Electric Boilers: The Cost, Efficiency & How They Work

Electric boilers are a great option for those who don’t have access to the gas network. Find out why.

While standard boilers use combustible fuel such as gas or oil to produce heat for your home, electric boilers convert electricity into thermal energy which makes this system extremely efficient. In fact, it can be up to 100% efficient.

What’s In This Guide to Electric Boilers?

Head straight to the section you need by clicking the links below.


How Electric Boilers Work

The electric boilers produce steam, and the process is quite simple. In fact, it’s not very different from a conventional boiler. While other types of boilers use gas or oil to generate heat, the electric steam boiler gets power from the line supply to produce the heat. Afterwards, the water from the tank runs through the pipes to the heating device and heats it up.

The boiling water then generates steam that heats your home through the heat tubes. The principle of work of an electric steam boiler is similar to the fire heated boiler. It differs only by methods that are used to produce heat.

The Pros and Cons

Whilst electric boilers are suitable for many homes, there are a number of situations where they will greatly increase your energy bill.

Electric Boilers: The Advantages

With the introduction of electric boilers, combustible fuels such as oil and gas are becoming outdated. By focusing only on electricity use, you can reduce your energy bills since there will be no need to use a variety of fuels to heat your home.

Since the electric steam boilers don’t use the combustible fuels, they are safer to use as you are protected from any possible fuel leakages.

Instead of using the combustion fuel the only power source that the electric boiler will need is the wall plug. Therefore, you won’t need to spare extra space to store the fuel and will have free space for any other objects.

Due to the electric steam boiler’s high-efficiency rate, you can reduce the energy loss to the bare minimum since the electricity is converted to the thermal energy. Thus, your energy bills will be significantly reduced compared to what you would pay with a condensing boiler. Besides, you save money on equipment and installation process.

Since the electric steam boilers don’t use the combustible fuels, they are safer to use as you are protected from any possible fuel leakages.


Compared to the fuel based boilers, electric boilers leave a significantly smaller carbon footprint.

Electric Boilers: The Disadvantages

Along with all the advantages, electric boilers also have a several drawbacks that make them a poor choice for some homes.

It is a real fact that electric boilers are comparably eco-friendly. They do produce less pollution than the fuel-driven boilers. However, in term of production of electricity, it can get as damaging to the environment as the fuel extraction

Since electric steam boilers entirely depend on electricity, you may end up with a non-operating boiler in case of a power shortage.

While your electric boiler uses less energy than oil or gas boilers, the energy bill will directly depend on the electricity cost. If the electricity costs in your area tend to rise every so often, an electric boiler may become more expensive.

Prices for the Electric Boilers and Service Expenses

Like with the majority of heating systems, the price for an electric boiler will depend on the qualities and features of your home. Although, the annual expenses for the electric boiler service may vary. If you are replacing your old electric boiler with a new one, the expenses you’ll bear will be around £1,000.

Electric combi-boilers will differ in price. For example, 9 kWh model average price is £1,500, while the models with higher capacity may cost £2,500 or more.

Get Professional Service

If you are planning to invest in a new boiler, you will need to find the right option for your house as well as the right people to complete the installation works.