In summary
Quidos is one of the government-approved accreditation schemes that energy assessors in England and Wales can belong to. An Energy Performance Certificate (EPC) can only be produced by an assessor who is a member of such a scheme — so understanding what an accreditation scheme does tells you why an EPC, and the assessor behind it, can be relied on. This page explains the purpose of the scheme rather than promoting any one provider.
What an EPC accreditation scheme does
Only accredited assessors who are members of a scheme approved by the Ministry of Housing, Communities and Local Government may lodge an EPC. Schemes such as Quidos, alongside others including Elmhurst Energy and ECMK, provide the framework that keeps those assessors competent and accountable. In practice a scheme:
- Licenses assessors – confirming they hold the right qualification before they can operate.
- Sets a code of conduct – standards of behaviour and professionalism members must follow.
- Audits work – checking a sample of assessments and certificates for accuracy and consistency.
- Lodges certificates to the central EPC register and provides a route to raise concerns about a member.
Why it matters to you
The scheme is what stands behind the figures on your certificate. Because members are audited and bound by a code of conduct, an EPC from an accredited assessor carries far more weight than an informal estimate — and if you believe an assessment is wrong, the scheme is your first port of call to have it reviewed. Some schemes also accredit the retrofit assessors and coordinators who work under PAS 2035 on energy-efficiency projects.
Whichever scheme your assessor belongs to, you can confirm an EPC on the government’s central register. For related guidance, see our pages on retrofit assessors and registers within these accreditations, and our wider energy and water section.
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