Member Knowledge Centre
member Knowledge centre
The Knowledge Centre provides CHBA members with access to information and resources. It is a growing resource that is currently focused on updating members about national building code information. Please note that this information is a benefit of your membership, and should not be shared beyond your company/organization.
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Task Group (TG) on Alterations of Existing HVAC Systems - July 29th, 2025
Task Group (TG) on Alterations of Existing HVAC Systems - July 29th, 2025
The TG, chaired by Miguel Gimeno, met to review the NBC 2025 Part 10 Alteration of Existing Buildings (AEB) draft. Members reviewed provisions requiring alterations to maintain or improve building performance, seal exposed ducts, insulate piping, and ensure adequate ventilation, with exemptions for heritage properties and minor repairs. Templates for reviewing AEB‑ and HVAC‑related provisions in the Ontario, Quebec, and Vancouver codes were provided, with both members and observers being asked to complete them to guide upcoming discussions in the next meeting which will take place sometime this upcoming October.
The AEB & HVAC Requirements Review template is intended to collect feedback on when alteration provisions should apply, whether requirements vary by occupancy, and the extent to which performance‑based approaches, exemptions, or relaxations are available. It also seeks input on HVAC‑specific requirements, including triggers for upgrades or replacements, applicable clauses, compliance alternatives, and performance or trade‑off paths.