Can SBEM be used to size an HVAC system?
SBEM supports Part L compliance and energy certification, but it is not an HVAC sizing tool. Here is the practical distinction.
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Method.
Technical insights
What changed.
What it means.
Clear, source-backed updates on EPCs, SAP, RdSAP and building compliance—translated into practical points for homeowners, designers and property professionals.
Elmhurst Design HEM: what OCDEAs can expect
Elmhurst has outlined its planned assessor software for HEM. Here is what is confirmed, what remains undecided and what assessors should do now.
Read insightDesign-stage and as-built SAP: why are both needed?
A practical guide to the two Part L calculation stages, the BREL reports and the evidence a project team should retain.
Read insightSAP 10.3: the current methodology for new homes
What the 2026 approval of SAP 10.3 means for new-build compliance work and project information.
Read insightRdSAP 10.0.1: what it means for existing homes
A concise explanation of the current reduced-data methodology used for domestic EPC assessments.
Read insightHome Energy Model: where the transition stands
HEM remains the intended successor to SAP, but SAP 10.3 currently remains the approved route.
Read insightDomestic EPC reform: new metrics and a revised timetable
The proposed domestic EPC format is changing, with implementation now expected in the second half of 2027.
Read insightNCM 2026, SBEM and BRUKL: the current position
What the 2026 non-domestic methodology approval means for compliance modelling and BRUKL reports.
Read insightEditorial approach
Useful when the rules move.
Articles are checked against official publications and reviewed by Martin Dimitrov, Elmhurst-accredited energy assessor EES/024141. They provide general guidance; the applicable methodology and regulatory route must be confirmed for each project.