Beta This is a new service. For assistance, call 0345 061 8888 (local rate)

My Application

g4hi.co.uk Installer Network

Join the g4hi.co.uk Installer Network

The G4hi.co.uk Installer Network connects accredited installers with households and local authorities across the UK looking for high-quality retrofit projects. From insulation and heat pumps to solar panels and ventilation, we help installers deliver safe, compliant, and efficient energy improvements — while we handle eligibility, funding checks, and administrative support.

Why Join the Network?

Being part of our network means you can focus on what you do best: delivering exceptional work. We bring verified, pre-qualified leads straight to you, remove the headaches of compliance and paperwork, and provide ongoing technical guidance.

  • Qualified Leads, No Cold Calling
  • ⁠Streamlined Compliance & Support
  • ⁠Nationwide Work, Local Focus
Team engineers and foreman stack hand and shake hands to show success at factory machines. Mechanical Team Operating Machinery.

Benefits for Installers

When you join g4hi.co.uk you get:

  • Verified, pre-qualified homeowner and local authority leads
  • Access to WHLG-funded and self-funded projects nationwide
  • Support with compliance, documentation, and evidence submission
  • National visibility to homeowners and councils

Who Can Join?

To join, your business must:

  • Be TrustMark registered and PAS 2030 compliant or equivalent

  • Have trained and qualified installers for your chosen measures

  • Be fully insured and compliant with H&S/RAMS regulations

  • Commit to quality, transparency, and high standards of workmanship and consumer welfare

Ready to Work With Us?

Whether you’re a solo installer or manage a large retrofit team, we’d love to hear from you. Apply now to become part of our trusted national installer network.

Call us on 0345 061 88 88
Or email info@G4hi.co.uk


G4hi.co.uk Installer Team Accreditations include :

You're in Safe Hands, just read our reviews;

I did not think I’d be eligible but…

I did not think I’d be eligible but Charles and Kate have been fantastic guiding me through and overseeing what has resulted in a 2 phase upgrade. Phase 1 loft insulation completed – the house is now noticeably less draughty. Phase 2 is just about to start this will get some heating into my home. Although the process took awhile before the work started I have been kept up-to-date with application progress throughout. Altogether a good experience. Thank you

All is not lost!!

Very grateful
Really helpful and friendly company, taken the stress out of being able to pay my bills, very grateful.

Mervyn Westlake

Genuine local company who care with an easy application process. You won’t be disappointed

What a great Company to deal with. It has a great application process that is made stress free and easy thanks to their professionalism and knowledge.

They really care about you we felt really looked after and they are there to help at every stage of the application. You can speak to them on the telephone which is a huge bonus, the customer care is outstanding.
We have had the work completed and the workmanship on every level is outstanding and to the highest quality. They contacted us for up dates along the way.