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Join thousands of UK homeowners who have already improved their homes with free government grants
Trusted by Homeowners Across the UK
Don’t just take our word for it. Here is what our happy customers have to say about their free boiler installations.
Outstanding service from beginning to the end! Effortless and hassle free experience. New boiler replacement in my house. Completed within 6 hours as promised, left me delighted and it didn't cost me.
Susi Roth
Can’t believe how quickly my application went through, very efficient, helpful and polite all the way through the process.
I’m more than happy
Sarah Bevan
A few weeks ago, my boiler broke, and then we read about the government ECO4 Scheme and were pleased to discover that we qualified for it. The form on the Heatzen...
Leanne Younger
From the 1st enquirery about a new boiler to the last pipe being fitted all went very smooth. Done and dusted in a few days. All concerned were very professional.
Lynn Frequently Asked Questions
Find answers to common questions about our services.
What is the ECO4 scheme?
A government-funded initiative that helps low-income and vulnerable households improve their home’s energy efficiency through free upgrades like insulation, boilers and heat pumps.
Who is eligible for ECO4 grants?
Homeowners and private tenants receiving certain benefits such as Universal Credit, Pension Credit or Child Tax Credit may qualify, along with those in low-income households.
What improvements are covered under the ECO4 scheme?
ECO4 covers a wide range of measures including loft insulation, cavity wall insulation, solid wall insulation, air source heat pumps, first-time central heating and energy-efficient boilers.
Is the ECO4 scheme completely free?
Yes, for eligible households the upgrades are installed at no cost. There are no hidden charges or repayment requirements.
How do I apply for ECO4 grants?
Simply reach out to a registered ECO4 installer like Cozyfy. They’ll run a quick eligibility check, arrange a free home survey, and handle the installation from start to finish.
Can private renters apply for the ECO4 scheme?
Yes, private tenants can apply, but in most cases the landlord’s permission is required before any work can be carried out.
How long does ECO4 installation take?
Most installations are completed within one to three days depending on the type and scale of the upgrade being carried out.
Will ECO4 grants affect my benefits or tax credits?
No, receiving an ECO4 grant does not affect your existing benefits, tax credits or any other government support you may be receiving.
How much can I save on my energy bills with an ECO4 grant?
Savings vary depending on the upgrade, but households can typically save hundreds of pounds per year on their energy bills after improvements are made.
When does the ECO4 scheme end?
The ECO4 scheme is currently running until December 2026. We recommend applying as early as possible to secure your free home upgrade before the deadline.



