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Last updated on December 13th, 2023 at 10:47 am

With the rising cost of living and the importance of sustainability, homeowners are constantly seeking ways to reduce their carbon footprint while also keeping their energy costs manageable.

The debate between electric boilers and gas boilers in terms of cost-effectiveness is a big part of this. This article dives into the comparison between these two heating options, finally answering the question: Are electric boilers cheaper to run than gas boilers?

Understanding the Basics: Electric Boilers vs. Gas Boilers

Before diving into the cost analysis, it’s important to grasp the differences between electric boilers and gas boilers.

Electric boilers use electricity to heat water, whereas gas boilers rely on natural gas combustion for heating. This distinction plays a crucial role in the operating costs of each system.

Energy Costs and Fuel Prices

One of the main factors influencing the cost of running an electric boiler versus a gas boiler is the current energy costs and fuel prices.

Historically, natural gas has been a more affordable energy source than electricity. However, this has shifted in recent years with the increasing adoption of renewable energy sources, which has led to more affordable electricity prices.

Renewable energy sources, such as solar and wind, have reduced our reliance on fossil fuels, driving down electricity prices and making electric boilers more cost-competitive.

Conversely, the price of natural gas can be subject to a number of factors, including demand, politics and seasonal fluctuations.


Efficiency and Conversion Losses

Efficiency is a critical aspect when looking at the cost-effectiveness of any heating system. Gas boilers traditionally held an advantage in terms of efficiency due to the direct combustion of fuel. However, this advantage has decreased as electric boilers have become more technologically advanced.

Electric boilers boast high energy conversion rates, with almost 100% of the electricity consumed being converted into heat.

Gas boilers, on the other hand, experience conversion losses during combustion and heat transfer processes, reducing their overall efficiency. This difference in efficiency can tilt the cost balance in favour of electric boilers over the long term.

Installation and Maintenance Costs

While operational costs are important, the initial installation and ongoing maintenance expenses must also be factored into the equation.

Electric boilers tend to have simpler installation processes as they do not require venting or exhaust systems, unlike gas boilers. This can lead to lower installation costs for electric boilers.

Maintenance costs for electric boilers are often lower as well, as they have fewer components prone to wear and tear. Gas boilers, on the other hand, require regular maintenance to ensure safe and efficient operation, which can add to long-term expenses.

Environmental Impact

In today’s environmentally conscious society, the carbon footprint of heating systems is an important factor to consider.

Electric boilers have an advantage in this aspect due to their ability to rely on renewable energy sources. By using electricity generated from solar panels or wind turbines, electric boilers can significantly reduce greenhouse gas emissions compared to gas boilers that rely on fossil fuels.


Determining whether electric boilers are cheaper to run than gas boilers requires a look at various factors, including energy costs, efficiency, installation, maintenance, and environmental impact.

While historically gas boilers enjoyed a cost advantage, renewable energy and better design have made electric boilers increasingly competitive.

When considering the question of cost-effectiveness, it’s important to take a long-term perspective and weigh the benefits of reduced carbon emissions, lower maintenance expenses, and the use of renewable energy sources.

Ultimately, the decision between electric and gas boilers should be based on an evaluation of both financial and environmental considerations, to ensure the choice is right for you.

If you’re still unsure, Warmable’s experts are able to provide you with a personalised quote. Just get in touch with our team today.

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Andrew Speer

Andrew Speer is the co-founder of Warmable drawing on more than 15 years of experience working in property and home repairs industry in the UK