About Olive & Hearth
A reference resource on indoor air quality and home ventilation for Canadian households.
Olive & Hearth is a reference resource covering indoor air quality, mechanical ventilation, air filtration, and humidity control as they apply to residential buildings in Canada. The articles on this site draw on publicly available standards, government guidance, and technical references. No endorsements are made and no commercial interests are represented.
What This Site Covers
The focus is practical — how ventilation systems work, what filter specifications mean, and what humidity levels are appropriate in different seasons and climates across Canada. Canadian buildings face specific conditions: cold winters that demand mechanical ventilation due to tight envelopes, wide humidity swings between seasons, and regional variation from the coast of British Columbia to the Prairie provinces.
Articles reference authoritative sources including Health Canada's guidance on home indoor environments, the National Building Code of Canada, ASHRAE standards, and the National Research Council of Canada. Where specific figures are cited, a source is linked.
Content Standards
All content is written to be factually grounded. Statistics and regulatory thresholds are sourced from publicly accessible documents. Where authoritative data is not available, neutral language is used rather than invented figures. Corrections to factual errors are welcome through the contact form on the home page.
Disclaimer
Contact
Questions, corrections, and feedback can be submitted through the contact form on the home page.
External Links
This site links to third-party government and standards-body resources. These links are provided for reference; Olive & Hearth has no control over the content or availability of external sites.
