Electric Boiler Installation Expert | MML Plumbing

In today’s world of advancing technology and growing environmental concerns, finding efficient and eco-friendly heating solutions for homes and businesses has become crucial. Electric heating appliances have emerged as a popular choice due to their efficiency and versatility. MML Plumbing Ltd. recognises the importance of adopting a modern central heating system, and in this article, we will delve into the world of electric boiler installation, focusing on the benefits, processes, and FAQs associated with this innovative heating solution.

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A trusted, family-run business located in the heart of North London.

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Boiler replacement
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Heating system design and installation

When it comes to heating your home, you’ll want to consider various factors like efficiency, running costs, and the environmental impact. Gas and oil boilers have long been the traditional choices for larger properties, offering consistent heat and hot water. However, with the rising awareness of carbon emissions and the desire for energy efficiency, electric heating appliances have become a great alternative. They can be installed with ease, even in homes with a single-phase electricity supply, and they are known for their high efficiency. While upfront installation costs may be slightly higher or have high running costs, the lower carbon footprint makes electric heating appliances an attractive option. It’s essential to consult with a qualified electrician or heating engineer to determine the right electric boiler for your home’s electricity supply and hot water demands, ensuring you get the best deal for your heating and hot water needs. Whether you choose gas, oil, or electric, the key is to prioritise efficiency and reduce your home’s carbon emissions while keeping your space warm and comfortable.

If you are considering upgrading your home’s heating system, you may wonder whether an electric or gas boiler is the best option.

Here is a comparison of the two types to help you make an informed decision.

What Our Customers Say

Claudine de Montule
Claudine de Montule
Great and efficient boiler service, fixed price so no surprises. Very professional
Danuta Miloszewski
Danuta Miloszewski
Used MML Plumbing for the first time today. Administrator in office was easy to deal with, efficient and helpful. Plumber arrived on time as arranged, fixed the problem and explained what he had done. Quick, tidy and courteous worker. What I also especially liked was that I was given an actual confirmed time when he would arrive and not one of those two or three-hour 'window slots'!
Charles V
Charles V
MML Plumbing successfully completed the installation of our heating system in our expansive 8-bedroom residence. The placement of the boiler and cylinder was expertly executed in the basement. They meticulously laid new piping throughout the house to facilitate radiators and hot/cold water faucets. The recent commissioning of the system has resulted in its exceptional functionality. Their impeccable organization and absence of any delays were notable. We definitely plan to engage their services again in the future.
Roger Packham
Roger Packham
MML were extremely responsive and accomodating through out. They understood my needs and were solution focused through out the job. I found them so easy to work with and would definitely use them again. Thank you MML.
Agnes Meszaros
Agnes Meszaros
Fast, professional, high quality service at a very reasonable price. I’m really glad I found them.
Henry Smith
Henry Smith
In North London, it can be hard to find a company that you can trust and provide quality work. We called MML Plumbing to install a system boiler and a hot water cylinder. The installation was done in a few days, and now everything is fine. They left the area very clean. I highly recommend them.
Andrew Healey
Andrew Healey
I had a shower replaced. A great job, very satisfied with the work. Levi was friendly, helpful and efficient.
Jatin Modi
Jatin Modi
I have been a landlord for 15 years and used many labour staff in my years. I started to use MML 6months back and now used them 5 times: 1) They are always on time 2) They are respectful 3) I trust their quotes - they do not "make up work" 4) They communicate well on both email and text 5) They are very organised and polite I have dealt with so much domestic help over the years so i know the benchmark - MML are way above Jay (Camden)
MML fitted a shower. Good price, courteous and thorough communication and excellent standard of work. I will call them again if I have plumbing related work
Hollie Davies-Smith
Hollie Davies-Smith
⭐⭐⭐⭐⭐ I am thrilled to leave a 5-star review for MML Plumbing's advanced leak detection services. They were able to find a leak that three other plumbers had missed. Their use of thermal imaging and acoustic leak detection tools set them apart from other companies in the area. What impressed me the most was their commitment to resolving the issue without causing unnecessary damage, while other companies suggested tearing apart my ceiling. Their services are not only effective but also affordable.They are a reliable and trustworthy company that goes above and beyond to solve plumbing problems. Thank you, MML Plumbing, for your expertise and exceptional service. I will definitely turn to you for any future plumbing needs. Hollie xxx
we install electric boilers in North London

How Does an Electric Boiler Work?

An electric boiler is a heating device that operates by using electrical resistance to generate heat and warm water. Here is a step-by-step explanation of how it works:

Heating Element: At the core of an electric boiler is a heating element. This element is typically made of high-resistance materials, such as nickel-chromium alloy, which can withstand the high temperatures required for heating water. When electricity is supplied to the heating element, it begins to heat up rapidly.

Water Circulation: The electric boiler is connected to a closed-loop heating system, which includes pipes, radiators, or underfloor heating systems, depending on the design of your heating system. Cold water from the heating system’s return pipe enters the electric boiler.

Heating Process

As the heating element heats up, it transfers thermal energy to the water that passes through it. This process is known as electrical resistance heating. The water temperature gradually rises as it circulates through the heating element.

Thermostat Control: Electric heating appliances are equipped with a thermostat or temperature control system that monitors and regulates the water temperature. When the water reaches the desired temperature set by the user, the thermostat switches off the heating element to maintain the water at the desired temperature.

Distribution: Once the water reaches the desired temperature, it is pumped or circulated through the heating system, such as radiators or underfloor pipes. The hot water releases its heat to the surrounding area, providing warmth to the space.

Return Flow: After circulating through the heating system, the now cooler water returns to the electric boiler through the return pipe, where the process starts again. The heating element reheats the water, and the cycle continues as needed to maintain the desired room temperature.

Safety Features: They are equipped with safety features to prevent overheating or damage due to electrical issues. These safety features include pressure relief valves and temperature sensors to ensure safe and efficient operation.

Energy Efficiency: Electric heating appliances are known for their energy efficiency because they can precisely control the temperature of the water, minimizing energy waste. They can also be integrated with renewable energy sources, such as solar panels, to reduce energy costs and environmental impact.

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Advantages of an Electric Boiler

Efficiency: They are highly efficient since they convert all the electricity into heat.
Environmentally friendly: They produce no direct emissions, making them a greener option.
Compact Size: They are often smaller and require less installation space.
Quiet Operation: They operate quietly, without the noise associated with combustion.

Secure a Guaranteed Fixed Price for Your New Boiler Installation Today!

Disadvantages of an Electric Boiler

Higher Operating Costs: Electricity can be more expensive than natural gas, resulting in higher operational costs.

Slower Heating: An Electric boiler may take longer to reach the desired temperature compared to a gas boiler.

Limited Capacity: An Electric boiler may have limitations on its heating capacity for larger properties.

a new electric combi boiler installation instead of gas combi boilers

How Much Does an Electric Combi Boiler Cost?

An electric combi boiler usually costs around £4500–£7500 for the more sophisticated models. The required materials and labour required to complete the work are good indicators of the final cost.

A gas or oil boiler costs a little less.

Why choose an electric boiler?

using the electric boiler with renewable technology supplying your own electricity

Electric boilers have gained popularity for several compelling reasons. First and foremost, they are known for their efficiency. Unlike traditional gas or oil boilers, electric boilers convert all the electricity into heat, making them a greener choice for heating your property. Additionally, they are environmentally friendly, emitting zero carbon emissions during operation, which is a significant step towards reducing your carbon footprint. ( with a gas boiler)

Other Benefits of Electric Boiler Installations


One of the primary advantages of a new electric boiler is its high energy efficiency. They are designed to convert almost all the electricity they consume into heat, making them an excellent choice for reducing energy waste and lowering utility bills.

Environmentally Friendly

Electric boilers are a green heating solution. They produce no harmful emissions, contributing to a cleaner and healthier environment. By opting for an electric boiler, you are taking a step towards a sustainable future.


Electric boilers are compact and require minimal installation space. They can be installed in small utility rooms or even in kitchen cupboards, making them a practical choice for properties with limited space.

Low Maintenance

Compared to traditional boilers, electric boilers have fewer moving parts, resulting in lower maintenance requirements. They are known for their reliability and longevity, reducing the need for frequent repairs.


Electric boilers are inherently safer than their gas counterparts. They do not produce combustion gases, eliminating the risk of the carbon monoxide leak. Additionally, there is no risk of a gas explosion, making them a secure heating option for your property.

Electric boiler running costs

The electric combi boiler’s running costs can vary depending on several factors, including the size of the boiler, its efficiency, your electricity tariff, and how well-insulated your property is. Generally, electric boilers are known for their high efficiency, which can result in lower running costs compared to some other heating options. However, the cost of electricity can be higher than other fuels like natural gas or oil in some regions. To minimise electric boiler running costs, it’s important to ensure your home is well-insulated, use the boiler efficiently, and consider off-peak electricity rates if available in your area. Regular maintenance and monitoring of your electricity bill can also help you manage and optimise your electric boiler’s running costs effectively.

Installation Process by Heating Engineers

Assessment and Planning

The first step in electric boiler installation is a thorough assessment of your property’s heating needs by a gas engineer and a qualified electrician. An experienced technician from MML Plumbing Ltd. will evaluate the size of your property, insulation, and hot water requirements to determine the most suitable electric boiler size and type.

Choosing the Right Boiler

After the assessment, the next crucial step is selecting the right electric boiler. Factors such as the boiler’s capacity, running costs, upfront costs, power output, boiler’s location, electric bill, installation cost, energy efficiency, and warranty should be considered during this phase to ensure optimal performance.

Electrical Requirements

Electric boilers require a dedicated electrical supply, usually three-phase power. Our technicians will assess your property’s electrical system and make any necessary upgrades to accommodate the new boiler.

Installation Steps

The installation process includes mounting the boiler, connecting it to the electrical supply, and integrating it with your central heating. Also, upgrade your fuse box. Our team will ensure that everything is installed correctly and safely.

Testing and Commissioning

Once the installation is complete, the boiler will undergo rigorous testing to ensure it functions flawlessly. This includes checking for any potential issues and verifying that the system operates efficiently.

Key Considerations Before Installing an Electric Boiler

Installing an electric boiler can be a practical and efficient choice for heating your home or business. However, before making this decision, it’s crucial to be well-informed about several essential factors that can impact the installation process and the performance of your electric boiler system.

Electricity Supply and Capacity

One of the foremost considerations when opting for an electric boiler is the adequacy of your electricity supply. Electric boilers require a substantial amount of power supply to operate effectively. Specifically, you’ll need at least a 32 amp breaker on the fuse box at the very least, and for some larger units, even higher capacity may be necessary up to 80 amp. Sometimes you also need three three-phase supplies for your property! This means assessing your current electrical infrastructure to ensure it can handle the additional load. In some cases, upgrading your fuse box and electrical meter to 100 amp may be required to support the demands of the electric boiler fully.

Managing Noise Levels

Electric boilers, like many heating systems, can generate noise, particularly when they are initially turned on or off. The noise level can vary depending on the specific model and its operational characteristics. If noise is a concern, you may need to consider implementing noise-reduction measures. This could involve soundproofing the boiler room or installing a silencer to minimize disturbances, ensuring a quieter and more comfortable environment.

Zero Carbon Monoxide Emissions

One significant advantage of electric boilers is their environmental friendliness. Unlike some other heating systems that burn fossil fuels, electric boilers do not produce any carbon monoxide emissions. This feature makes them an excellent choice for those who prioritize indoor air quality and are concerned about the potential health risks associated with carbon monoxide exposure. With an electric boiler, you can enjoy peace of mind knowing that your central system is clean and safe for your home or business.

Let’s compare it with the gas boiler

Advantages of Gas Boilers

High Efficiency: Gas appliances are known for their high efficiency, which can result in lower energy bills.

Quick Heating: They provide rapid heating, making them suitable for properties that require instant warmth.

Abundant Fuel: Natural gas is widely available in many areas, making it a convenient fuel source.

Disadvantages of Gas Boilers

Environmental Impact: Burning natural gas produces carbon emissions, contributing to greenhouse gas emissions.

Installation Complexity: Gas boilers require proper ventilation and gas line installation, which can be complex and costly. A gas boiler is still a popular choice, due to its hydrogen-ready option, considering changing for a better option in the future.

Maintenance Needs: Regular maintenance is necessary to ensure safety and efficiency.

electric combi boiler installation in the airing cupboard
Expert Boiler Installers

Sustainable Heating Solutions: Book a new installation today

Are you ready to embrace the efficiency and eco-friendliness of electric boilers for your home or business? At MML Plumbing, we’re your trusted electric boiler installation experts in North London. Replace your existing gas boiler with our efficient electric boiler! Don’t miss out on a greener and more cost-effective heating solution. Contact us today to schedule your electric boiler installation consultation. Your comfort and sustainability are our priorities. Let’s cap off your gas boiler, and get a new boiler to be installed.

Frequently Asked Questions

air source heat pump installation with electric boiler

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