Trustmark | PAS 2035/2030:2019 | Warm Home Discount Scheme

Trustmark | PAS 2035:2019 | Warm Home Discount Scheme


As a not-for-profit social enterprise, TrustMark takes pride in continually investing in the scheme, supporting Scheme Providers and Registered Businesses to improve consumer protection and standards across all sectors.

TrustMark delivers consumer confidence through its expert network of Scheme Providers and their Registered Businesses.

TrustMark Scheme Providers commit to meeting the Framework Operating Requirements and ensuring their Registered Businesses maintain required standards of technical competence, customer service and trading practices.

Established in 2005, TrustMark operates within a Master Licence Agreement issued by the Government’s Department for Business, Energy and Industrial Strategy (BEIS).

TrustMark licences and audits over 35 Scheme Providers with over 15,000 Registered Businesses. These encompass 156 different service types.


PAS 2035:2019 Retrofitting Dwellings for Improved Energy Efficiency

PAS 2035:2019 was sponsored by the UK Government's Department for Business, Energy and Industrial Strategy (BEIS). This is the key document in a framework of new and existing standards on how to conduct effective energy retrofits of existing buildings, it covers how to access dwellings for retrofit, identify improvement options, design and specify Energy Efficiency Measures (EEM) and monitor retrofit projects.

The standard drives the 'whole house approach' including the 'fabric first' methodology. It defines the qualifications and responsibilities of individual retrofit roles and respective activities required prior to and post EEM installation.  It also includes a risk assessment process that builds incrementally robust requirements depending on what requirement path (A, B, or C) the retrofit project is assessed to fall within.

PAS 2035 is inextricably linked to PAS 2030:2019, the new industry specification to replace PAS 2030:2017 and is the standard to which all energy efficiency installers must be certified and compliant. The specifications are available from the BSI Shop.

TrustMark and the Delivery of PAS2035

TrustMark has incorporated the new specification, the requirements for registration of the Retrofit Roles and the agreed transitional arrangements into Annex B of our Framework Operating Requirements, so that going forward, where a consumer engages with a TrustMark Registered Business about the installation of energy efficiency measures, they can have confidence that the work is delivered to improved, recognised specifications and is underpinned by a compliance regime.

When a business becomes PAS 2030:2019 certified, then they must adhere to the PAS 2035:2019 requirements for a project, which must be overseen and lodged into the TrustMark Data Warehouse by a TrustMark registered Retrofit Coordinator.

Warm Home Discount Scheme (WHD)

warm homes

In line with the overarching direction of government policy ambition that energy efficiency measures installed under government schemes will be carried out by TrustMark Registered Businesses.

The 2022/2026 extension to the Warm Home Discount Scheme (WHD) includes a new requirement that boilers and central heating systems installed and repaired under the scheme are carried out by a TrustMark Registered Business and work must be lodged into the TrustMark Data Warehouse.

The WHD is a government scheme for England, Scotland and Wales that supports low-income households with heating their homes.