Upgrading your old gas boiler could save you up to £540 on your bills

If you have an non-condensing boiler manufactured before 2005, you could save an average of £540 per year by upgrading to a modern A-rated condensing boiler

Standard Non-Condensing Gas Boiler on wall

Free gas boiler replacement grants

If your boiler was installed before April 2005 then you may well have an old fashioned non-condensing boiler.

These boilers are generally around 65% efficient. This means that for every £1 of gas, at least 35p is going straight up the chimney in waste heat.

A modern A-rated condensing gas boiler is around 92% efficient, which will save you hundreds of pounds per year.

Alternatively, your old inefficient boiler can be replaced with an Air Source Heat Pump through the ECO4 scheme and will usually be combined with solar panels to reduce your energy bills even further.

A whole house approach to energy efficiency

As part of the ECO4 scheme we will also upgrade the insulation in your home before installing your new boiler or Air Source Heat Pump if:

Your loft has less than 300mm (12 inches) of loft insulation;
Any rooms in the roof or flat roofs are insulated in line with the current building regulations; or
If you have a cavity wall it must be insulated


If we are upgrading the insulation in your home the amount of air that can circulate will be reduced as gaps which may have allowed draughts previously are closed up. Poor ventilation can lead to poor air quality and in turn condensation forming which can cause mould and damp patches to appear.

To ensure that this doesn’t happen we will bring your homes ventilation up to the latest standards and install additional ventilation where required as part of the ECO4 grant.

Do I qualify for a free gas boiler upgrade grant?

To qualify for a free gas boiler upgrade grant, you must be a homeowner and in receipt of one of the benefits listed below.

Alternatively, if you are a tenant we may be able to upgrade your boiler to an environmentally friendly Air Source Heat Pump.

Child Benefit (conditions apply)
Child Tax Credit
Employment & Support Allowance
Housing Benefit
Income support
Job Seekers Allowance
Pension Credit Guarantee Credit
Pension Credit Savings Credit
Universal Credit
Working Tax Credit
Warm Homes Discount

I’m not receiving one of these benefits, can I be helped?

Up to 50% of energy efficiency measures installed in England, Wales and Scotland can be completed through the ECO4 Flex scheme and is for households whose combined gross income is below £31,000 per year or if you have certain health conditions which would make you vulnerable to the cold.

The ECO4 Flex scheme is administered by Local Authorities who are responsible for rolling it out in your area and they will verify your income or health eligibility. It is rolling out slowly and is expected to be fully live by April 2023.

We will check as part of your application if your area is now open for applications.

I’m a Landlord, can I get any help?

The Minimum Energy Efficiency Standards (MEES) came in to effect in April 2018 and means that all rented properties must now have a minimum energy efficiency rating of band ‘E’ unless exempted.

However, from 2025, all properties rented on new tenancies must meet a minimum energy efficiency rating of Band ‘C’ and properties with existing tenants must be brought up to this standard by 2028. Failure to do so could result in a fine of up to £30,000.

These changes are in line with the Government’s net zero emissions by 2050 targets and will also apply to properties which are being sold from 2035.

How can we help?

If your tenant is receiving one of the benefits listed above your property will be eligible for a grant to improve your property, including upgrading an old non-condensing gas boiler to an environmentally friendly Air Source Heat Pump along with solar panels to further increase the efficiency of your property.

In fact, the ECO4 scheme says that all Band ‘E’ rated properties must reach a minimum Band ‘C’ after installation of energy efficiency measures.

Applying for your grant is as easy as 1, 2, 3…

1. Apply

Complete the online application form and we will contact you to check that you qualify for free insulation, heating upgrades or solar through either the ECO4 or ECO4 Flex scheme

2. Survey

Once we have confirmed that you qualify, we will arrange for one of our Retrofit Assessors to complete a free, no obligation survey which will provide you with an idea of how much energy you can save

3. Install

We will arrange the installation of your free home upgrades by one of our fully trained and accredited installers who will remove any waste and clear away any mess caused by the installation