GeneralSeasonal2026-03-04
Wildfire Smoke and Your HVAC System
During smoke season, upgrade filtration and run recirculation to protect indoor air.
BC wildfire smoke makes indoor air quality a seasonal priority for your HVAC.
Filter and recirculate
Use a higher-MERV filter your system supports, change it more often, and run the fan on recirculate rather than drawing in outside air.
Seal and clean
Keep windows closed, seal drafts, and consider a dedicated air purifier for the worst days.
Key takeaways
- Use a compatible higher-MERV filter
- Change filters more often
- Recirculate, don't draw outside air
- Seal drafts during smoke
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