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Get a brand-new condensing boiler installed for £0 under the ECO4 scheme. If your home’s EPC rating is below D, your boiler is pre-2005 installed, and you receive certain benefits, you could qualify for a free heating upgrade worth up to £10,000.
The Free Boiler Scheme is part of the UK Government’s Energy Company Obligation (ECO4) programme. It aims to help low-income households replace old, inefficient boilers with new, energy-saving models at no cost.
So far, over 243,000 homes have received upgrades under ECO4, including free boilers, insulation, and heating system improvements – leading to £138.5 million in total annual bill savings across the UK.
If your EPC rating is D, E, F, or G, this scheme can help you lower energy bills, reduce carbon emissions, and keep your home warmer for less.
Here’s what’s typically included and what those parts might cost in the UK:
Component | What’s Included | Typical Cost Estimate* |
A-rated condensing boiler | New high-efficiency boiler | £2,500 – £6,000 depending on size, type, and complexity |
New radiators | One or more radiators | ~£200 per radiator installed |
TRVs & smart heating controls | Thermostatic radiator valves & smart thermostat | Thermostat: £120–£220, installation £30–£80 |
Pipework / plumbing | New or modified pipes as needed | Variable (included in full system estimate) |
Installation / labour | Certified engineers doing the fit-out | Included in full system cost ranges |
Insulation (optional) | Loft, cavity wall, etc. | Depending on the home, it can cost from £1,000+ (if needed) |
*These are estimates drawn from UK market data. Actual costs vary by region, home size, existing infrastructure, and complexity.
To qualify for a Free Boiler Grant under the ECO4 Scheme, your property and household must meet the following requirements:
Criteria | Details |
Homeownership | Must be a homeowner or private tenant (living with the homeowner). |
Benefits | At least one household member receives an eligible government benefit. |
EPC Rating | Property must have an EPC rating of D, E, F, or G. |
Gas Metre | Installed before April 2022. |
Existing Boiler | Must be non-condensing (pre-2005) or there’s no boiler installed. |
If you notice these signs, apply for the ECO4 boiler grant today and upgrade your old heating system for free!
Over 4 million UK households are still stuck with old, inefficient boilers — paying more than they should. The ECO4 Boiler Scheme helps them upgrade to high-efficiency systems completely free of cost.
Getting your free boiler upgrade under the ECO4 scheme is quick and hassle-free.
Fill out our 60-second online form to confirm your eligibility – no long calls or paperwork needed.
A certified retrofit assessor will inspect your current heating system and EPC rating to confirm your grant.
Your brand-new boiler and heating upgrades will be installed by Gas Safe and PAS 2035-approved engineers – at zero cost to you.
If your home isn’t connected to the gas network, you could qualify for a free air source heat pump and solar panels under the government-backed ECO4 scheme.
No space for heat pump installation? Upgrade to modern high heat retention storage heaters – ideal for efficient, low-carbon heating all year round.
Even if you don’t receive government benefits, ECO4 LA Flex lets your local council refer you for a fully funded heating upgrade worth up to £10,000 — no upfront cost.
The UK government aims to reduce carbon emissions and provide assistance to low-income or elderly homeowners to change old coal-fired heating to gas boilers. The boiler replacement scheme for over 60s covers the cost of a new boiler including installation for eligible pensioners who struggle to pay high energy bills because of earning a low income.
To help lower heating costs of households who live in fuel poverty, the government plans to install energy-efficient free gas boilers. They recycle heat from exhaust gases, making condensing gas boilers more efficient than other heating systems. They use less energy and can be vented with PVC condensate pipes.
Combi boilers are best for small to medium-sized homes – usually with up to three bedrooms and one bathroom. They provide hot water with warmth on demand, making them ideal for households with up to four people, including senior citizens.
System boilers are ideal for larger homes with multiple rooms and bathrooms. They store hot water in a separate cylinder, making them perfect for families of up to six people. These boilers provide consistent heating and hot water, making them a great choice for people over 60 living in big homes.
The government’s free boiler scheme replaces old, inefficient heating systems that cost too much to run. Eligible households struggling with high energy bills can get a free boiler upgrade. Check below! If you have any of these heating systems, you may qualify for a back boiler replacement grant. Eligible systems include:
Old gas, oil, or LPG boilers with low efficiency.
Outdated models consuming excessive electricity.
Inefficient and can be costly to operate, especially as they get older.
Expensive to run due to the high cost of LPG imports.
Coal or wood-burning systems that are inefficient and polluting.
Standalone gas heaters with poor heating capacity.
Old boilers fitted behind fireplaces, wasting energy.
Homes with old floor-standing boilers are also eligible for replacement.
The free replacement boiler grants change your outdated heating systems with energy-efficient boilers. Eligible replacements include
Combi boilers are perfect for small to medium-sized homes – up to 3 bedrooms and 1 bathroom. They provide heating in addition to hot water supply on demand, making them great for up to 4 people.
System boilers are suitable for larger homes with multiple rooms and bathrooms; they will definitely be adequate for more than 4 bedrooms. They can warm up households of up to 6 persons. Such boilers store heated water in a separate cylinder, providing a reliable supply of hot water and central heating.
Combi boilers are perfect for small to medium-sized homes – up to 3 bedrooms and 1 bathroom. They provide heating in addition to hot water supply on demand, making them great for up to 4 people.
System boilers are suitable for larger homes with multiple rooms and bathrooms; they will definitely be adequate for more than 4 bedrooms. They can warm up households of up to 6 persons. Such boilers store heated water in a separate cylinder, providing a reliable supply of hot water and central heating.
Though different boiler brands have strong points on different perspectives, Worcester Bosch, Ideal, Baxi and Viessmann consistently deliver on reliability, efficiency, innovation, and affordability.
From oil, Diesel, gas, LPG and electric options, gas is turned to be the most favorite because of its low running cost and comparatively less environmental impact than oil boilers.
Modern gas boilers with condensing technology are known to have better efficiency than other types of boilers. Condensing boilers recover heat from the gases to heat your home.
Don’t miss out the chance to get free heating system & insulation upgrades for your home! Check your eligibility now and start saving every year on energy bills.
We are an ECO4-approved installer that helps upgrade your old inefficient home to a modern, highly efficient and eco-friendly living place in the United Kingdom.
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