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Are Free Boilers in Wales Really Free? What You Need to Know
What Are Free Boiler Schemes?
Free boiler schemes are initiatives funded by the UK Government, the Welsh Government, or major energy suppliers. These programs aim to improve energy efficiency, reduce fuel poverty, and lower carbon emissions by offering eligible households the chance to upgrade old, inefficient boilers at little to no personal cost.
Typically, these schemes are part of wider government policies like:
- The Energy Company Obligation (ECO4)
- The Welsh Government Warm Homes Nest Scheme
These programs cover the cost of supply and installation for eligible applicants. However, not everyone qualifies, and there may be limits on what is covered or what type of property is eligible.
Understanding the Warm Homes Nest Scheme
What is the Nest Scheme?
The Warm Homes Nest Scheme is a Welsh Government program designed to support low-income households and those in fuel poverty by offering free home energy efficiency improvements, including boiler replacements.
Who Qualifies?
To be eligible for a free boiler under the Nest scheme:
- You must own or privately rent your home (not through a local council or housing association).
- You or someone in your household must receive a means-tested benefit, or have a low income.
- Your home should have a poor energy efficiency rating (typically EPC rating E, F, or G).
In some cases, households with a member suffering from certain long-term health conditions related to cold homes may also qualify, even if they don't meet the financial criteria, as long as the home is energy inefficient (EPC rating D or below).
The ECO4 Scheme: UK-Wide Support
What is ECO4?
The Energy Company Obligation (ECO4) is a UK-wide initiative that requires large energy suppliers to help fund energy efficiency measures for vulnerable and low-income households. It covers a range of upgrades including loft insulation, cavity wall insulation, and boiler replacements.
ECO4 Eligibility Criteria
To qualify for a free boiler under ECO4, you generally need to meet the following:
- Be in receipt of certain income-related benefits, such as:
- Universal Credit
- Income Support
- Pension Credit
- Housing Benefit
- Live in a property with a low EPC rating (D or lower).
- Be the homeowner or private tenant with landlord consent.
Is It Really Free?
No Hidden Charges?
In most approved applications, the boiler and installation are fully covered, and homeowners do not need to pay anything upfront or later. However, it's important to read the fine print and ask questions about:
- Survey fees (usually free, but clarify first)
- Additional works (e.g., pipe upgrades or controls that may not be included)
- Future maintenance costs (warranty terms vary)
In some marginal cases, households might be asked for a small contribution if their circumstances don’t fully match the core funding criteria.
What Type of Boilers Are Offered?
Under these schemes, the replacement boilers are generally:
- Modern A-rated condensing boilers
- Gas-powered (for homes on the gas grid)
- Installed with thermostatic radiator valves (TRVs) and a room thermostat where needed
Solid fuel, oil, or LPG boiler replacements may also be offered under specific circumstances, though they are less common.
How to Apply for a Free Boiler
Step-by-Step Process:
- Check Eligibility: Review criteria for Nest or ECO4.
- Contact an Approved Installer: You must go through a registered installer or approved partner.
- Home Energy Assessment: A free survey will assess your home’s suitability.
- Installation Approval: If eligible, your installation will be booked.
- Boiler Installed: Usually within 2–4 weeks of assessment.
Are Private Tenants Eligible?
Yes, private tenants can benefit from these schemes, but:
- The landlord must give permission
- The property must meet minimum requirements, including having an EPC rating of E or below
- The tenant must meet the income or benefit criteria
Landlords are generally not allowed to charge tenants for these upgrades as they are funded externally.
What If I’m Not Eligible?
If you don’t qualify for a fully funded boiler:


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