COVID-19: Ways to improve ventilation and air filtration in your home

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Narration: Did you know that ventilation helps protect against the spread of COVID-19 and other respiratory illnesses?

Text on screen: Ventilation

The word “Ventilation” appears on screen and it bends and twists as though it is riding a current of air

Narration: Ventilation replaces stale indoor air with fresh outdoor air. This helps to reduce the levels of infectious particles in the air.

A hand reaches for the latch on a window. The window opens, fresh air blows in and the camera pulls back to reveal three people in a living room playing a board game.

Narration: This is particularly important before, during, and after times when people from outside your immediate household are present.

An electrician wearing a mask works on a fusebox in the basement of the home. The homeowner opens the basement window near where he is working.

Narration: Open your windows and doors to create a cross-breeze of fresh air. Even if it’s cold or wet outside, opening your window for a few minutes at a time will help.

Snowflakes can be seen through the basement window. The window’s rectangular shape transforms into an air filter for a household furnace.

Narration: Air filtration can also help by removing infectious particles from the air.

Particles in the air float into the filter and are trapped.

Narration: To do this, you can use a central heating, ventilation and air conditioning (HVAC) system.

A hand reaches for the digital thermostat used for home heating and cooling systems.

Narration: Change the filter as recommended, ensure it fits properly, and keep your vents and fans clear.

Air is being drawn into the home’s air ducts and a new filter is inserted into the furnace.

Narration: You can also run kitchen or bathroom exhaust fans continuously and at low speed.

The blades of a kitchen fan are spinning and the image transforms into a portable air purifier sitting on the floor of the home.

Narration: Or consider using portable air purifiers with a HEPA filter that is the right size for the room.

A man and woman are in the living room; the man is wearing a mask. The curtains wave in the breeze from the open window at the back of the room.

Narration: Remember that ventilation is one way to help prevent the spread of COVID-19, and should be combined with other public health measures.

Narration: Learn more about ventilation at

Text on screen:

Narration: A message from the Government of Canada.

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