Electric Boilers vs Gas Boilers

Time to talk heating. Not the kind of chat you’d have while clutching a hot cuppa on a chilly Surrey morning, but the real, behind-the-walls kind. If you’re like many homeowners across London and the surrounding areas, you’re probably weighing up your options for a reliable, efficient boiler system. With rising energy prices and more pressure to go green, the debate on electric boilers vs gas boilers is growing louder in 2025, especially as more families explore greener, cost-efficient heating options.

Let’s talk about the facts, dive into the differences, and share what our team at Rowlen has seen firsthand after five decades of keeping homes warm and families happy.

Related: Do Smart Thermostats Save Money? 5 Tips for Bigger Savings

How Boilers Power the Modern Home

Boilers are the unsung heroes of home comfort. They heat water for your radiators, showers, taps—basically everything that makes your home feel like home in the colder months. 

In 2025, while heat pumps and solar panels are gaining ground, traditional boilers remain the beating heart of many households.

Here in London and Surrey, where Victorian terraces and modern flats sit side by side, boilers need to do more than just produce heat—they need to work with the quirks of each property. That’s where choosing the right boiler type becomes more than a matter of preference. 

It’s about reliability, space, and how you live day-to-day.

Key Differences in Heating Methods

• Gas boilers burn natural gas to heat water. The process is quick, powerful, and familiar. Electric boilers, on the other hand, use heating elements to do the same job using electricity.
• Electric boilers have fewer moving parts, which means less can go wrong. Gas boilers, however, typically offer higher output and faster heat recovery, making them ideal for homes with multiple bathrooms or high hot water demand.
• Electric boilers vs gas boilers differ in how they generate heat, and that impacts everything from performance to ongoing costs.

Think of it this way: gas is the traditional open fire—strong, steady, and robust. Electric is more like central heating at the flick of a switch—cleaner, quieter, and easier to maintain.

What Efficiency Really Means in 2025

Efficiency isn’t just about how well a boiler heats your water but about how little waste it produces while doing it. 

With updated government standards, energy efficiency ratings now reflect real-world performance and environmental impact. What used to be a vague label is now a measurable part of your home’s carbon footprint.

Electric boilers typically boast near-100% efficiency. Why? Because every unit of electricity is converted into heat. Gas boilers, even modern condensing models, tend to land somewhere around 90–94%. That’s still strong, but slightly less efficient due to energy lost in combustion and flue gases.

But here’s the catch: while electric boilers might be technically more efficient, the cost and source of that electricity can tell a different story. More on that below.

Related: What’s the Best Boiler Temperature for Efficiency?

How Electric Boilers Work and Where They Shine

Electric boilers are simple machines. Water flows through heated elements, gets warm, and circulates through your home. No flues, no gas lines, and no worries about carbon monoxide.

They’re brilliant in smaller properties or flats where gas isn’t available, or where space is limited. Because they don’t need a flue, they can be installed in more places, including tight utility cupboards.

And the best part? Quiet operation. Electric boilers hum softly rather than roaring to life. If you’ve ever been startled by a loud ignition click in the dead of night, you’ll appreciate the difference.

Upfront Costs: Installation & Equipment

Installing an electric boiler tends to be more straightforward and affordable. There’s no need for gas pipework or flue systems, which keeps both labour and material costs down. 

That said, the unit itself might cost a touch more depending on the brand. But for many, the overall setup costs come in lower compared to gas.

Running Costs: Monthly Expenses & Servicing

Electricity is more expensive per unit than gas in the UK—that’s just a fact. So even if your electric boiler converts 100% of its energy into heat, you might still see a steeper bill, especially in larger homes.

However, the silver lining is reduced servicing. With no burner, no flue, and fewer components overall, there’s simply less to check. We’ve seen electric boilers go years without a hiccup, especially when maintained with care.

If you’re on an off-peak tariff or using solar panels, running costs can balance out nicely. 

Book a boiler quote

Call our specialists on 020 8395 8616 or fill in our booking form.

Gas Boilers: Tried-and-Tested Heating in the UK

Gas boilers have been the go-to for generations. If your home has an existing system, it’s likely built around a gas setup. 

And there’s a reason for that: they deliver strong performance, especially in larger properties or those with older plumbing.

Many of our long-standing customers still prefer gas boilers, especially when dealing with multiple bathrooms or extended families. It’s familiar, effective, and compatible with the vast majority of UK heating systems.

Upfront Costs: Installation & Equipment

Installing a gas boiler can involve more upfront work. Depending on your current setup, that might mean flue upgrades, pipework changes, or even repositioning the boiler itself.

At Rowlen, our engineers are all Gas Safe registered and have the experience to handle even the trickiest installs. While the initial quote might be higher, the added reliability and familiarity can be well worth it for the right home.

Running Costs: Monthly Expenses & Servicing

Gas is still cheaper than electricity per kWh, so month-to-month bills are typically lower with a gas boiler. That’s especially true in homes with high hot water use.

However, regular servicing is a must. Annual safety checks, flue inspections, and efficiency tests are all part of owning a gas boiler. 

Don’t worry, Rowlen offers fast and reliable annual boiler servicing for your home’s heating system. We offer tailored service plans to help spread those costs and give homeowners peace of mind. Contact us for a free estimate.

Environmental Considerations

With the UK aiming for net-zero emissions, homeowners are more climate-conscious than ever. The type of boiler you choose can have a real impact—not just on your bills, but on your carbon footprint.

Electric boilers are technically cleaner at the point of use. No combustion means zero emissions inside your home. Plus, as the national grid shifts toward renewables, it becomes greener every year.

Gas boilers, in contrast, still burn fossil fuel. Even modern condensing units release carbon dioxide. However, innovations like hydrogen-ready boilers and hybrid systems are helping bridge that gap.

Emissions, Green Energy, and the Bigger Picture

If reducing emissions matters to your family, electric might be the better fit. And with solar panels becoming more accessible, some homeowners are moving toward full electrification.

That said, gas isn’t going away overnight. It remains a strong option, especially with the right boiler and efficient usage. 

At Rowlen, we help our customers choose systems that meet their needs today while leaving room to adapt tomorrow.

Related: Worcester Boiler Models Compared: Which One is Right for You?

Home Suitability: Which Boiler Works Best Where?

Comparing electric boilers vs gas boilers also means thinking about how your family uses heat. This includes your family’s daily routines, hot water habits, and seasonal shifts.

Flats or small homes with limited space? Electric might be ideal. Larger family homes with multiple bathrooms? Gas may still offer better value.

Our Gas Safe-registered engineers regularly help homeowners assess their current system, discuss future upgrades, and weigh up the long-term picture. It’s all part of the personalised service we’re known for more than five decades.

Contact us today and talk to an expert.

Gas Safe Certification and Electrical Standards

Safety is everything when it comes to heating systems. That’s why we always highlight the importance of compliance.

Electric boilers have their own set of electrical regulations, and we follow them to the letter.  On the other hand, all gas boiler installations must be carried out by a Gas Safe registered engineer—that’s non-negotiable. It’s your guarantee of safety, and it’s something our team has maintained with pride for decades.

Whether it’s your first boiler or a system upgrade, we handle every job with the professionalism you’d expect from a local, family-run team.

Related: The Ultimate Guide to Boiler Service: How Often and Why

Why More Families Trust Rowlen for Boiler Solutions

From our decades of experience, the choice between electric boilers vs gas boilers often comes down to lifestyle, property type, and personal priorities.

Rowlen Boiler Services is proud to serve generations of families across London, Kent, and Surrey. Our customers come back not just for our expertise, but because we treat every job like it’s in our own home.

Our team brings genuine care, deep knowledge, and a local touch to every project. We’re your trusted partners in home comfort. And in 2025, when the options can feel overwhelming, we’re here to make your choice simple, stress-free, and tailored especially to you.

Contact us today!