If you’re fed up with sky-high energy bills and your boiler is on the way out, you’ll be relieved to hear that the UK government’s ECO4 scheme might pay to replace it—for free.
Under this program, eligible households can receive free boiler replacements that not only heat their homes but also reduce their carbon footprint. But what type of boiler system can you get through ECO4? And how do you know which one is appropriate for your home?
In this blog post, we’ll discuss all boiler types included in the scheme, describe how they work, and assist you in determining the most suitable option for your heating requirements. Let’s get started.
What Is the ECO4 Scheme?
The Energy Company Obligation (ECO) is a government-backed initiative that requires energy suppliers to help low-income and fuel-poor households improve energy efficiency. The fourth stage, ECO4, spans from 2022 to 2026, with a strong emphasis on reducing carbon emissions and increasing bill savings.
One of the most significant benefits under this scheme? A brand-new boiler—completely free for those who qualify.
Whether you’re dealing with an inefficient system, outdated technology, or no central heating at all, ECO4 aims to make your home warmer and more affordable to run.
Who is Eligible for a Free Boiler Under ECO4?
To get a free boiler under the ECO4 program, you need to meet specific requirements. While every installer might slightly differ in criteria, these are the general guidelines:
- You must be a homeowner or private tenant (with landlord’s approval).
- Your property should have a low energy efficiency rating (usually EPC D or low).
- Someone in your household must be receiving qualifying government benefits, such as:
- Pension Credit
- Universal Credit
- Income Support
- Housing Benefit
- Child Tax Credit, and more.
- Pension Credit
Even if you don’t qualify for benefits, some local councils (LA Flex) may offer flexible eligibility, so it’s worth asking.
Boiler Types Explained: What is Available Under ECO4?
Let’s define the various boiler types available under the ECO4 so you’ll have a better idea of what might be provided for you when they install it. Here are the boiler types explained in simple terms:
1. Combi Boilers (Combination Boilers)
Best for: One-bathroom, small to medium-sized homes.
Combi boilers are also a favourite in the UK. These boilers do not require a separate hot water cylinder or tank because everything is assembled in one firm unit. When you turn on the tap, hot water is provided on demand.
- Space-saving
- Energy-efficient
- Perfect for homes with limited loft or airing cupboard space
Under ECO4, many households qualify for an A-rated combi boiler as they are simple to install and highly efficient.
2. System Boilers
Best for: Larger homes or houses with more than one bathroom.
System boilers heat your central heating and keep hot water in a separate cylinder. They don’t need a cold water tank in the loft, which makes them easier to maintain than conventional boilers.
- Great for high water demand
- Faster hot water recovery time
- Better pressure for multiple taps running at once
If your household uses a lot of hot water throughout the day, a system boiler could be your best bet—and yes, it’s covered under the ECO4 scheme.
3. Conventional Boilers (Also Referred to as Regular or Heat-Only Boilers)
Best for: Traditional homes with old heating systems already in place.
These boilers work with a cold water tank and a hot water cylinder. They take up more space and are a bit more complex, but for specific properties—especially older ones—they’re still the most suitable solution.
- Compatible with older pipework
- Ideal if you already have the tanks in place
- Can supply water to multiple outlets simultaneously
If your home is already set up for this type, the ECO4 scheme may replace your old conventional boiler with a modern, more energy-efficient version.
4. Condensing Boilers (In All Types)
All boilers fitted under the ECO4 have to be condensing models, regardless of whether they’re combi, system, or conventional. These are not a separate category but rather an upgrade in efficiency.
Condensing boilers recover heat from exhaust gases that would otherwise be lost—making them up to 90%+ efficient.
- Lower fuel bills
- Environmentally friendly
- Comply with current UK building standards
Why Your Boiler Type Is Important
When it comes to central heating, selecting the correct boiler isn’t merely a matter of what will fit. It’s a matter of what will suit your lifestyle, home size, and hot water requirements. With various types of domestic boilers available, ECO4 installers typically evaluate your home first to suggest the perfect one.
The goal? To ensure your home runs efficiently—saving you money every single month.
How to Get a Free Boiler Under the ECO4 Scheme
Applying for a free boiler grant via the ECO4 scheme is easier than you may imagine:
- Check Your Qualification
Use a free online qualification checker or call a qualified installer. - Book a Home Survey
A trained technician will visit your home to determine the type of boiler system you have installed and assess what replacement options you qualify for. - Installation
Once signed off, your new boiler will be fitted—usually within a week. And the best news? You won’t pay a penny.
Benefits of Upgrading Your Boiler Via ECO4
Save Bill Money
A new efficient boiler requires less fuel to warm your house. This leads to decreased monthly bills, which in turn save money in the long run.
Better Comfort
No more shivering in cold corners or waiting ages for hot water. Just a cosy, evenly heated home that feels good all day.
Reduce Emissions
Modern condensing boilers are better for the planet. They cut down your carbon footprint without compromising on comfort.
No Upfront Cost
If you qualify, everything—from the boiler to the installation—is covered. You don’t have to pay a penny out of pocket.
By upgrading to a new boiler with ECO4, you’re making long-term savings and comfort an affordable option—without breaking the bank.
Conclusion
The ECO4 scheme is one of Britain’s best-kept secrets for refurbishing your home. If you are in the qualifying group, you might receive various forms of boiler systems entirely for free.
From small combi boilers to high-capacity and standard models, the scheme caters to various home requirements. If your heating system is not up to date, don’t delay. Check your eligibility and start your journey to a cozy, energy-efficient home today.
FAQ’S
What is the ECO4 scheme for boiler replacement?
The ECO4 scheme is a government-backed scheme in the UK that helps low-income households upgrade from old heating systems to efficient ones—possibly for nothing. If you’re eligible, you could receive a free boiler and other improvements to your home.
What boiler systems are available through ECO4?
You can be given various boiler systems, including combi boilers, system boilers, and conventional boilers. All boilers fitted under the ECO4 scheme are new condensing models for best efficiency.
Can I get a free boiler installation?
Yes, if you’re eligible, the entire cost is paid for by the ECO4 grant. That includes the boiler installation and any necessary system updates. You don’t have to pay a penny out of your pocket.
Are all types of boilers included in the scheme?
Yes, all three types of boilers that are appropriate for domestic heating are taken into account—combi, system, and traditional—as long as they are energy efficient and suitable for your house requirements.
