Guide to Boiler Upgrade: Benefits, Eligibility, and Signs

Guide to Boiler Upgrade: Benefits, Eligibility, and Signs

Living costs have surged globally, especially after the COVID-19 pandemic and the rising energy bills due to increased demand. Gas usage spikes in winter due to higher heating system usage. While some households manage lower bills, it’s often due to newer, efficient boilers that consume less energy and provide more heat, contributing to a healthier environment.

Yet, vulnerable and low-income households struggle to afford boiler upgrades. To address this at Free Boiler Grants, the UK government has introduced the Boiler Upgrade Scheme, aiming to replace old boilers with newer, more efficient models.

Understanding the Boiler Upgrade Scheme:

The Boiler Upgrade Scheme, also known as the Boiler Replacement Scheme, is a grant designed for UK homeowners. Its primary goal is to reduce carbon emissions by replacing fossil fuel heating with efficient, low-carbon systems like air-source heat pumps, ground-source heat pumps, and biomass boilers. The UK government aims to achieve net-zero emissions by 2050.

Eligibility for the Boiler Upgrade Scheme in Wales and England

The scheme is available to residents of England and Wales. To qualify:

  1. Ownership of the Property:The applicant must own the property, whether residential, commercial, or rented.
  2. Valid Energy Performance Certificate (EPC):The property must have an EPC without cavity or loft insulation recommendations.
  3. Installation Capacity:Maximum installation capacity under the scheme is 45kWth.

Restrictions for Heat Pumps and Biomass Boilers: Biomass boilers require the property to be in a rural area and not connected to the gas grid.

  1. Existing Heat Systems:The scheme requires replacing fossil fuel systems, including oil and gas boilers. Electric heating systems are not eligible for replacement.
  2. Apply with Upgrades:The scheme is applicable if the property received separate funding for upgrading efficiency, like insulation of windows and doors.
  3. Newly Built Homes:Social housing and newly built homes are not eligible, but self-built properties can apply.

Applying for the Boiler Upgrade Scheme with Free Boiler Grant

Applying is straightforward:

  1. Contact Us: Check your eligibility.
  2. Installer Confirms Eligibility: Our installer confirms your eligibility.
  3. Grant Deducted from Installation Cost: The grant amount is deducted from the installation cost.
  4. Property Inspection: A professional team checks the installation or contacts you for more information.

Signs Your Boiler Needs an Upgrade

If your boiler is 15 years old or more, it’s time to consider an upgrade, even if it’s still working well. Signs include:

  1. Corrosion:Visible corrosion indicates wear; annual professional checks can prevent further damage.
  2. Reduced Efficiency:Longer heating times and rising energy bills signal reduced efficiency.
  3. Maintenance and Repair Costs:High monthly repair and maintenance costs suggest an urgent need for an upgrade.
  4. Unusual Noises:Increased or changing sounds may indicate blockages, pressure issues, or leakages.
  5. Leakages:Visible leakages disrupt efficiency and heating; replacement is crucial.
  6. Ineffective Heating:Rooms taking longer to heat or varying temperatures signal inefficiency.


In summary, the Boiler Upgrade Scheme offers a valuable opportunity for homeowners to replace old boilers with efficient, eco-friendly alternatives. Understanding eligibility criteria and recognizing signs for an upgrade can lead to a more comfortable, cost-effective, and environmentally friendly home.

Stay tuned to Free Boiler Grants for updates on the ECO4 Scheme, first-time central heating grants, air source heat pump grants, and boiler grants.


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