Supply ventilation
Forced supply of fresh filtered air — breathe with windows closed.
Supply ventilation pushes filtered, winter-heated outdoor air into the home. In smoggy Almaty winters an open window delivers PM2.5 straight to your bedroom, while a HEPA/F7 unit stops most of it. Wall breathers cost 250,000–600,000 KZT per room; ducted systems must be planned at rough-work stage.
See also
Want an interior where all of this is already thought through?
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