We specialise in securing government funding for homeowners to improve their property’s Energy Performance Certificate (EPC) rating. Until March 2026 UK homeowners with old inefficient boilers can be eligible for a brand new A rated boiler with no costs at any stage, saving them up to £900 per year.
Our site will give you an indication if you meet initial criteria.
Free Assessment
Our team will contact you by sms, phone or email to check your boiler make and model
Receive Offer
We will provide all the information on the free boiler upgrade scheme
Book Install
If you are happy to proceed we will change your boiler within days
What is The Free Boiler Scheme
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The free replacement of old inefficient boilers with high-efficiency boilers and smart controls is part of the UK’s Energy Company Obligation scheme, which aims to improve energy efficiency in homes. It particularly benefits homeowners with energy-inefficient properties who qualify based on income or specific benefits. This also cover additional upgrades such as solar panels, insulation (loft, cavity wall, and underfloor), and heating system improvements along with other measures required to meet minimum Energy Performance Certificate (EPC) standards. Importantly, there are no costs at any stage of the process.
Replacing an old non-condensing boiler with a modern A-rated condensing boiler and smart controls typically saves households £350–£900 per year on heating bills. The upgrade also improves the property’s Energy Performance Certificate (EPC) by 3–10 points, helping many homes move closer to, or into, the more desirable EPC Band C rating.
Typical Boilers You Can Upgrade To:
Worcester Bosch Greenstar 4000
Viessmann Vitodens 200-W
Vaillant ecoTEC Plus
Ideal Logic Max Combi
Alpha E-Tec Boiler
Baxi 800 Combi
Potterton Promax
Glow-worm Energy
Intergas
Alpha E-Tec
Why Upgrade Your Boiler?
Increase your equity by adding to your homes value at no cost to you. If you have an old boiler you are paying too much for your energy bills and your home won't heat up as quickly and efficiently as it should.
Cut Your Heating Bills Dramatically
New boilers use far less gas, helping you save hundreds each year compared with old non-condensing models.
It Doesn't Cost You a Penny
Our team take care of everything for you, all material and installations costs are of no charge to you.
Enjoy a Warmer, Comfortable Home
They heat your home more efficiently, giving faster warmth and more consistent room temperatures.
Better Hot Water Performance
Modern boilers deliver stronger, more reliable hot water flow with less waiting and fewer fluctuations.
Take The First Step
Use our form to see if you qualify to have your properties upgraded for free by our experienced team.
Older boilers cost more to run and are far more prone to breakdowns. A new condensing boiler is up to 30% more efficient and can save you hundreds each year.
Yes. Condensing boilers heat your home faster and maintain steadier temperatures, so rooms feel warmer and more comfortable.
Absolutely. Modern boilers provide stronger, more consistent hot water flow with fewer temperature drops - especially in showers.
Installation is usually completed within a day, and engineers ensure minimal disruption. Most households carry on as normal.
Yes. They’re built with modern, long-lasting components and typically come with long warranties, meaning far fewer breakdowns.
In most cases, yes. The improved efficiency of a condensing boiler can significantly reduce your gas usage - cutting annual heating bills between £350 - £900+. Depending on your current bills/usage.
A new boiler needs only an annual service to stay in warranty. Performance is more reliable, which reduces unexpected repair costs.
All new boilers come with manufacturer warranty cover, so parts and labour are protected - giving peace of mind for years.
Yes. They waste far less energy and produce fewer emissions, helping to lower your carbon footprint.
The upgrade is fully funded through the government’s Energy Company Obligation (ECO) scheme. Energy suppliers cover the cost — not you. If you qualify, the boiler, installation, and all required work are paid for in full, with no fees at any stage.
Albert H
Homeowner, Carlisle
'I couldn’t believe how easy the whole process was. My old boiler was unreliable and costing a fortune to run. The team arranged everything, and within a day I had a brand-new condensing boiler installed for free. My home is warmer, my bills are lower, and I’m genuinely impressed with the service."
John L
Homeowner, Liverpool
“As a homeowner on a tight budget, I didn’t think I’d qualify for any support. But ECO4 covered the entire upgrade, including a high-efficiency boiler and loft insulation. The difference in my heating bills has been huge, and I didn’t pay a single penny. Fantastic experience!”
Client reviews
Sheila P,
Homeowner, Bradford
“My boiler kept breaking down and I dreaded the cost of replacing it. This scheme was a lifesaver. They replaced it with a modern condensing boiler and added smart controls. My home heats up so much faster now, and the whole thing was completely free. I wish I’d applied sooner!”
Imran A,
Homeowner, Brighton
“I was sceptical at first, but the team explained everything clearly and handled all the paperwork. The free boiler upgrade made an immediate difference — my EPC rating improved, and my house feels warmer than ever. No hidden costs, no hassle, just a great service from start to finish.”
See If You Qualify
Take a few seconds to complete the form below and find out if you qualify for a free, fully funded boiler replacement.