What Is PAS 2035 Accreditation?

What Is PAS 2035 Accreditation?

What Is PAS 2035 Accreditation?

PAS 2035 is a set of guidelines that focuses on the implementation of energy efficiency measures (EEMs) in buildings, taking into account both technical requirements and occupant comfort.

Specifically, it is designed to assess and retrofit residential buildings for improved energy performance by identifying areas for improvement and specifying the relevant measures. Additionally, PAS 2035 emphasizes the need for monitoring and evaluating retrofit projects to ensure that they meet the desired standards.

To achieve optimal results, it should be used together with PAS 2030:2019, which outlines the installation standards for EEMs.

In summary, PAS 2035 is a comprehensive approach to whole-house retrofit that considers the entire building and occupants’ needs while ensuring that retrofit projects meet required standards.

Is PAS 2035 Mandatory?

PAS 2035 is becoming mandatory as of the 30th June 2021. This means that all companies installing Energy Efficiency Measures (EEMs) will have to adhere to this standard, including those providing domestic retrofit services.

An exemption has been put in place until the end of October 2021 for firms involved in Green Homes Grant and Local Authority Delivery Phase 1 schemes, but after this period PAS 2035 compliance will become compulsory.

What Is A PAS 2035 Retrofit?

PAS 2035 sets out the standards for a comprehensive energy efficiency retrofit approach, known as ‘whole-house’ or ‘whole-building’ retrofit.

The objective is to install energy efficiency measures (EEMs) that consider the entire building’s requirements, including technical aspects and occupant comfort. The focus of PAS 2035 is on evaluating domestic dwellings for energy retrofitting, identifying areas for improvement, and designing and specifying the necessary measures.

It also involves monitoring domestic retrofit projects. It is important to note that PAS 2035 should be used in conjunction with PAS 2030:2019, which outlines the standards necessary for installing EEMs.

By following these standards, energy efficiency improvements can be made more effectively, ultimately reducing energy costs, enhancing comfort, and lowering carbon emissions.

What Is The Difference Between PAS 2030 And PAS 2035?

PAS 2035 is an overarching framework that sets out the specifications for domestic retrofit projects in the UK while PAS 2030 is a certification achieved by businesses to demonstrate their compliance with the requirements specified in PAS 2035.

In other words, PAS 2035 outlines what must be done, and PAS 2030 certifies that it has been done correctly. Both documents must be taken as a whole and should be read together for retrofitting efforts to be deemed compliant.

What Are The Roles Of PAS 2035?

PAS 2035 outlines professional roles such as Retrofit Advisor, Retrofit Assessor, Retrofit Coordinator, Retrofit Designer and Retrofit Evaluator, who must all have the necessary training and certification according to the standard.

It does not require that each of these roles are carried out by separate individuals, so long as there are no unresolved conflicts of interest.


PAS 2035 is not a certification like PAS 2030 but instead sets out the specifications required for compliant retrofitting which should be taken as a whole with PAS 2030 to achieve successful energy efficiency upgrades.

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