How we heat homes is changing and the journey towards reducing carbon emissions is driving it. Gas boilers will be banned from new build developments by and by , all gas boilers installations will be phased out. Banning gas boilers is just one of the many strategies to reduce carbon emissions by changing the way we heat buildings in the UK.
In this article we cover one of the alternatives - electric boilers and if they really are a viable alternative to gas.
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Who should consider an electric boiler?
Electric boilers are popular for homes that are off grid with no access to mains gas. With the increase in oil prices and the push to reduce reliance on fossil fuels, electric boilers are becoming a much more realistic option for traditional homes in areas that would have relied on gas too. They can also be easily integrated into existing heating systems.
An electric boiler might be a suitable option to you if:
' You are off the gas grid
' You are looking for an alternative to an oil boiler
' You are eco-conscious and keen to reduce your carbon emissions
' Your home isn't suitable for a heat pump. A reason could be that you have limited outdoor space
How does an electric boiler work?
Electric boilers work similarly to gas boilers. Cold water is sourced from the mains water supply and electricity is used to pass electric current through heating element within the electric boiler to heat the water. When the cold water passes over the heating element, heat is transferred which results in hot water that can either be transferred around the house or stored for use later. However, the way in which an electric boiler works, and stores water can vary depending on the type of electric boiler you decide is right for you.
What types of electric boiler are there?
Not too dissimilar to gas boilers, there are various types of electric boilers to choose from. There are three common types which include electric combi boilers, heat-only and system boilers.
Electric combi boilers
Similar in appearance to a gas combi boiler, it's a single unit that provides both hot water taps and for your central heating. An electric combi boiler heats water on demand which uses more power than the other two options we'll cover next. One of the great things about an electric combi boiler is that they don't require hot water storage cylinders which makes them a solid choice for homes which have less available space.
Electric heat-only boilers
Sometimes known as flow boilers, this type of electric boiler is best suited to larger properties that have a higher demand for hot water. Unlike electric combi boilers, heat-only boilers heat water and store it in a hot water tank for use when needed. The heated water is distributed throughout a home using motorised valves, pumps, and tanks. As well as a hot water tank, heat-only electric boilers also need a cold-water feed tank that gets filled up from the mains water supply which means using a heat-only electric boiler takes up more space in the home.
Electric system boilers
Imagine taking the external components like a pump from a heat-only boiler system, then including them in the body of the boiler, this is a system boiler. They also don't take up as much space because they only need a hot water tank. You'll find that system boilers can vary, with some not requiring a hot water cylinder because it is integrated within the boiler which is designed to fit snugly within an airing cupboard.
What are the advantages of electric boilers?
Almost 100% efficient!
Electric boilers provide heating and hot water much more efficiently than gas boilers. They use any combustion meaning no loses through flue gases, this means that ultimately, you'll use less energy to meet your heating requirements.
Lower carbon emissions
Unlike gas boilers, electric boilers do not produce any carbon emissions, so they are great if you are looking to reduce your carbon footprint. It's important to note that to make the electric heating system truly emission-free, the electricity used to power it must be 100% from renewable sources such as wind or solar.
Minimal maintenance
Ongoing maintenance costs is where gas boilers start to lose out. The average one-off annual boiler service can range between £80 ' £120. But there are products such as HomePlan by Corgi which provide annual boiler and home emergency cover.
With electric boilers, you don't need annual servicing or much maintenance.
No flue needed!
Electric boilers don't produce any waste gas and therefore don't need a flue which means that you have greater flexibility when it comes to installing one.
No risk of harmful gas leaks
Faulty gas boilers can produce carbon monoxide which is a highly poisonous gas ' a silent killer. It's one of the key reasons why you must get gas boilers serviced annually. There's no risk of harmful gases coming from an electric boiler.
Compact & quiet
Electric boilers are generally more compact than their gas counterparts which helps to overcome any challenges when it comes to space. Also, because there are fewer moving parts, they operate quieter than gas alternatives which is great if they are installed in a room that is used often.
Compatibility with existing heating systems
Unsurprisingly electric boilers work with existing heating systems such as wet underfloor heating, traditional central heating and conventional room thermostats.
What are the disadvantages of electric boilers?
Running costs
There is no hiding the fact that the cost per kWh of electricity is more expensive than gas, however, the difference between gas and electricity prices could narrow over the long-term, but for now the reality is electricity is more expensive.
When considering an electric boiler as your heating source people often factor in installation of renewable sources of energy for example PV. This perfectly complements an electric heating system by reducing the running costs and has a very attractive return on investment.
Not suitable for all homes
Generally, correctly specified, electric boilers do not require the same output as the gas boilers they are replacing. However, in larger homes the size (kW) required can put too much demand on incoming electrical supply. Going forward of course, the Distribution Network Operator (DNO) will likely be providing larger electrical supplies to domestic properties as part of the drive to facilitate micro generation.
Warranty duration
When comparing the warranty of an electric boiler with a gas boiler, you'll find that typically warranties for electric boilers only cover 2 or 3 years. It could be the case that there is more competition amongst gas boilers which could encourage manufacturers to offer greater incentives such as longer warranties.
What size electric boiler do you need?
For a heating only boiler, the general rule of thumb is to allow 1.5kW of boiler output per radiator. So, if you have 8 radiators you should install a 12kW boiler. But it's important to remember that some radiators are going to be much larger than others and used at different times. So, it's worth considering whether you need 1.5kW per radiator in your home.
For example, a small radiator or bathroom towel rail may only require 500W or less, so that is 1kW off your required boiler output straight away, and 1kW of electricity that you don't need to spend money on.
If you are specifying a boiler to provide hot water for heating and showering, the popular school of thought is to add 3kW to the required output of the boiler. This is considered a 'failsafe' but is not really needed, even if you have an electric combi boiler. If you want to know why, we've covered it in detail in 'Can you swap out a gas or oil boiler for an electric one?'.
If you are replacing an existing gas or oil boiler with electric, you may need a smaller boiler heat output. A heat loss calculation will help your installer decide what size electric boiler you need. If too big, your new electric boiler will place unnecessary demands on the electricity network, and you could see unexpected rises in your energy bills. If your electric boiler's output is too low, it would potentially struggle to meet the heating and hot water demands of your home.
How much do electric boilers cost?
How much an electric boiler costs will vary depending on the manufacturer and the type. Lower output and smaller models will cost around £600 to just over £1,000. Whereas larger and more powerful electric boilers could cost up to £2,500.
Also consider the installation cost too. If you are simply replacing an existing electric boiler the cost will be significantly less than replacing a gas boiler system. Installation costs will vary from installer so it's worth getting three quotes to compare and check that you are getting a fair price.
So, is an electric boiler right for you?
In the quest for clean, energy-efficient home heating solutions, electric boilers have emerged as an attractive and environmentally conscious alternative to traditional gas or oil-powered systems. Homeowners can benefit from numerous advantages including lower carbon emissions, reduced maintenance requirements, and improved safety aspects. With an array of electric boiler models available on the market, selecting the perfect system for your home can be complex and confusing. But worry not, for The Electric Heating Company is here to help decode the world of electric boilers and guide you towards the ideal home heating solution!
Our essential guide to Electric Boilers will provide a comprehensive overview of the various types of electric boilers, highlighting their unique features and benefits. Furthermore, we will delve into essential tips for selecting the right electric boiler system tailored to your specific home heating needs, including energy efficiency, size, and heat output. Additionally, we will touch upon crucial aspects related to installation and maintenance to ensure that your chosen electric boiler delivers optimal performance and longevity.
Arm yourself with the knowledge and insights our Essential Guide to Electric Boilers provides, unlocking the potential to transform your home heating system into a more sustainable, eco-friendly, and efficient solution. By understanding the intricacies of electric boilers and making informed decisions, you can enjoy the numerous benefits of these modern home heating marvels, including reduced energy consumption, lower carbon emissions, and cost savings. Explore the world of electric boilers with The Electric Heating Company and take the first step towards creating a warm, comfortable, and environmentally friendly home.
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Types of Electric Boilers and Their Advantages
There are a variety of electric boiler options to choose from, each offering unique benefits:
Direct-Acting Electric Boilers: These boilers use electric elements as a direct heat source, providing instant hot water and quick room heating. They are highly efficient, quiet, and reliable and have low installation costs.
Storage Electric Boilers: Storage boilers store hot water produced during lower-cost, off-peak periods in an insulated tank, for use throughout the day. Although their installation cost is higher, this type of boiler can offer sizable energy savings.
Electric Combi Boilers: Combining central heating and hot water provision in one unit, electric combi boilers can provide more energy-efficient space heating and hot water on demand. They are compact and easy to install, making them great for smaller homes.
Each type offers distinct advantages, allowing you to select the best option for your home heating requirements.
Factors to Consider When Selecting an Electric Boiler
When choosing an electric boiler, consider these essential factors to ensure you make the right decision:
- Energy Efficiency: Opt for electric boilers with high-efficiency ratings, ensuring that more energy is converted into heat, lowering running costs and environmental impact.
- Heat Output: Calculate the required heat output (measured in kilowatts) to maintain your desired room temperature, and choose a boiler model that can meet this demand.
- Size: Determine the appropriate boiler size that fits comfortably in your designated space without compromising performance or aesthetics.
- Compatibility with Heating System: Ensure your chosen electric boiler is compatible with your existing central heating system, pipework, and radiators for seamless integration and optimal performance.
Installation of Electric Boilers: Practical Considerations and Tips
Installation of your electric boiler is a crucial step for ensuring optimal performance and reliability:
- Hire a Professional: Employ a trained and registered electrician or contact us for one of our approved contractors to carry out the installation, guaranteeing a safe and high-quality job.
- Secure Permits and Comply with Regulations: Familiarise yourself with local regulations governing electric boiler installations and follow building codes to ensure compliance.
- Evaluate Electrical Requirements: Analyse your home's electrical capacity, confirming that your electrical panel and wiring can support the additional load without causing issues.
- Plan and Prep the Installation Site: Prepare the designated installation area, ensuring it's clean, dry, and easily accessible. This will reduce the likelihood of delays and complications during installation.
Maintenance Tips for Ensuring Your Electric Boiler's Optimal Performance and Longevity
Keeping your electric boiler in peak condition requires regular maintenance:
- Inspections and Servicing: Schedule an annual inspection by a qualified professional who can identify and address any potential issues, prolonging the life of your electric boiler.
- Bleed Radiators: Annually bleed your home's radiators to remove trapped air, ensuring optimal heat distribution and reducing the load on your electric boiler.
- Keep the Area Around the Boiler Clean: Maintain a clean and clutter-free space around your boiler unit, reducing the risk of fire hazards and enabling easy access for maintenance.
- Monitor Water Pressure: Regularly examine your boiler system's water pressure, ensuring that it remains within the recommended levels to ensure efficient operation.
Conclusion
Electric boilers present an attractive and sustainable home heating solution, offering advantages such as energy efficiency, eco-friendliness, and reduced maintenance requirements. By understanding the types of electric boilers available and considering factors such as energy efficiency, heat output, size, and compatibility, you can make an informed decision that suits your unique needs.
Proper installation and maintenance play an important role in ensuring that your electric boiler functions at peak capacity, offering reliable and efficient home heating for years. By following the tips and insights provided in our Comprehensive Guide to Electric Boilers, you can unlock the potential of modern electric boilers, transforming your home into a warm, comfortable, and sustainable living environment.
Are you ready to discover the full potential of electric boilers and take a step towards a greener and more energy-efficient home heating solution? Browse through The Electric Heating Company's range of high-quality electric boilers in the UK, designed to provide optimal heating for any home. Allow our expert staff to guide you through the selection, installation, and maintenance processes, ensuring your absolute satisfaction with an environmentally friendly and cost-effective electric boiler unit. With The Electric Heating Company by your side, achieving an energy-efficient and contemporary home heating solution has never been easier.
Are you interested in learning more about Electric Heating Boilers? Contact us today to secure an expert consultation!