This website uses cookies to ensure you get the best experience on our website: Find out more.
Has your ECO4 installation failed? We’ll fix it – fast, local and guaranteed
We hear it every week – and we’re here to help.
At Celtic Green Energy, we’ve stepped in to rescue dozens of homes where government-funded ECO4 heat pump and solar installations were poorly installed, undersized, or never finished at all.
Had a poor ECO4 installation? Our trusted ECO4 repair service can help.
If your heat pump, solar panels, or insulation were installed under the ECO4 scheme but aren’t working properly — or the installer has disappeared — Celtic Green Energy can step in. Based in South Wales, we specialise in inspecting, repairing, servicing and completing unfinished or faulty ECO4 work. Get peace of mind with fast, local support from a team you can trust. You’re not alone. And we’re here to put things right.
Tell us what’s wrong
Fill out the quick survey about your installation
We book your diagnostic visit
Secure an engineer visit and confirm your slot
We inspect & quote
One of our expert engineers visits your property, checks everything, and explains what’s needed
Only pay for repairs if you go ahead
No pressure – you’re in control
ECO4 installations are meant to meet the same high standards as paid-for systems – including full property assessments and proper commissioning. But far too many homeowners are left with systems that are:
Undersized or misconfigured
Poorly installed by rushed subcontractors
Delivered with no guidance, no documentation, and no support
If you’ve had this experience, you are not alone – and you’re absolutely right to speak up. We’ll help you get the system you were promised.
Many homeowners feel they “shouldn’t complain” because the work was government-funded. But remember:
💡 ECO4 is funded by taxpayers – and installers are paid thousands for each job.
💡 You have the legal right to expect proper work and working systems.
If you’re cold, confused, or ignored — don’t feel guilty. Get help.
If you’ve had a heat pump or solar installation through ECO4 and it’s not working or your installer won’t return your calls let us step in.
Serving all of South and West Wales
Fast callouts available
Accredited Installers | 5-Star Reviews