At Home Efficient Ltd, we take pride in delivering high-quality home improvements under the ECO4 and Great British Insulation Scheme (GBIS). We are committed to ensuring that all customers receive excellent service and are completely satisfied with the work we carry out. We recognise that issues may arise. When this happens, we take every complaint seriously and use it as an opportunity to resolve concerns quickly and improve our service.
How to Make a Complaint?
If you are unhappy with any aspect of our service or installation, please contact us through one of the following methods or fill the complaint form.
When making a complaint, please include your name, address, contact details, and details of the issue so that we can address it promptly.
Our Complaint Handling Process
Acknowledgement
We will confirm receipt of your complaint within 2 working days.
Investigation
A senior member of our team will fully review and investigate your concerns.
Response
We will provide a written response within 5–10 working days, outlining the findings and any actions we will take.
Escalation Routes
If you are not satisfied with our final response, you may escalate your complaint to the relevant independent body. TrustMark, NAPIT or RECC.
Customer Complaint Form
Please use this form to tell us about your complaint. We take all concerns seriously and will work with you to resolve the issue quickly and fairly.

By Post
Our Commitment
As a TrustMark-registered business delivering ECO4 and GBIS funded improvements, we are committed to:
Treating every complaint fairly and transparently
Resolving issues as quickly as possible
Meeting all consumer protection requirements set out under TrustMark and ECO4/GBIS guidance
Your feedback is extremely important to us, and we use it to improve the services we provide to households across the UK.