Elements and Performance Criteria
- Plan the NatHERS assessment.
- Need for assessing thermal performance of existing residential building is clarified with client.
- Effective communication strategies are used to assist in establishing rapport with the client and in responding to client questions and concerns.
- Potential risks are identified and suitably managed.
- Documentation required for the assessment is obtained.
- Authority to proceed is obtained from client before commencing, and reconfirmed as appropriate during the assessment.
- Gather information on existing residential building.
- Building drawings and other supporting documentation for use in assessment, including details of proposed building additions and alterations, are identified and accessed from relevant sources in line with organisational procedures and regulatory requirements.
- Site inspections are planned.
- Potential hazards associated with conducting a site inspection of an existing building are identified to ensure risks are suitably managed.
- Information required from client is obtained before conducting site inspection.
- Details of site inspection are agreed with client before conducting inspection.
- Site inspection is safely conducted and information required for assessment is gathered.
- Limitations of data collected are identified in line with organisational procedures.
- Enter information into thermal performance assessment tool.
- Computer equipment and software required for the assessment are identified and checked for serviceability.
- Building information is extracted from building plans and specifications, outcomes of site inspection, other supporting documentation and discussions with client.
- Building information is correctly entered into thermal performance assessment tool.
- Methods for entering information relating to non-standard building materials and designs are used correctly.
- Methods for entering information required for assessing and rating alterations and extensions are implemented correctly.
- Apply thermal performance assessment tool.
- Relevant functions of thermal performance assessment tool are used to generate outputs in relation to thermal performance of the building, including proposed additions and alterations if required.
- Thermal performance assessment tool outputs are identified and analysed.
- Errors in data entry and assessment are identified and corrected.
- Limitations of software are identified and considered during assessment.
- Identify options for improving thermal performance.
- Sources of technical advice on building thermal performance are identified.
- Assumptions and limitations inherent in thermal performance assessment tool are considered when interpreting outputs.
- Thermal performance tool outputs are interpreted to identify strengths and weaknesses in thermal performance of building.
- Options for improving thermal and environmental performance and for meeting regulatory requirementsare identified based on criteria.
- Interactions of thermal performance improvements on other aspects of building performance are identified and advice is provided to client.
- Impact of options is evaluated by reassessing the building using the thermal performance assessment tool.
- Report outcomes of thermal performance assessment.
- Results and recommendations, along with supporting evidence, are collated and documented.
- Results and recommendations of thermal performance assessment are explained to the client.
- Reports and other documentation associated with thermal performance assessment are lodged with regulatory authorities if required, and securely stored to be readily retrieved.