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Residential Mechanical Ventilation Design Summary

Published by Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI)

2 editionsChoose one to open it.

Open at source

This is Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI)’s document, as linked from Mississauga’s website on 19 October 2026. It may have changed since: check the current version at the source. Legal notice

Overview

HRAI's one-page Residential Mechanical Ventilation Design Summary, posted by the City of Mississauga in two editions: one for systems designed to OBC 2024 9.32 (revision 01/25) and one to NBC 2020 9.32 (revision 06/24). It records the location, builder and designer with HRAI number, combustion appliances, heating and distribution systems, the principal ventilation system design option and capacity, principal and other ventilation fans with airflow, sones and HVI rating, and the designer's consent. A note says a secondary suite's ventilation system has a separate design.

What it covers

Location
Builder
Designer
Combustion Appliances
Heating System
Distribution System
Principal Ventilation System Design Option
Principal Ventilation Capacity (PVC)
Principal Ventilation Fan
Other Ventilation Fans
Designer Consent

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