xmlns="http://www.w3.org/2000/svg" viewBox="0 0 54 54">
Skip to content
Dansk

Ventilate your home

A poorly ventilated room can increase the risk of infection spreading through the air. On the other hand, changing the room air by airing out thoroughly and regularly can reduce the risk of infection with novel coronavirus indoors.

Novel coronavirus is transmitted through contact and droplet spread in the same way as the common cold or influenza. When an infected person coughs, sneezes, talks or shouts, small droplets containing virus are ejected into the air and spread over short distances.

Most of these drops fall to the ground within a few metres, but some of them – the so-called microdroplets – will remain airborne for longer, particularly in stagnant air, and that increases the risk of infection. 

Microdroplets accumulate in enclosed spaces with poor ventilation. Therefore, ventilation and creating a cross draft by opening two windows clears the air of suspended microdroplets.

How to air out effectively 

If you do not have a ventilation system in your home, you can increase ventilation by:

  • Creating a cross draft by opening windows and doors.
  • Opening windows and doors for 5-10 minutes 4-5 times a day.
  • Airing out more often if several people are gathered indoors, for example, before and after you have had guests in your home.
  • Creating a draft every hour if you are together for an extended period of time.

However, by itself, increasing ventilation is not enough to safeguard people from exposure to the virus that causes COVID-19. To protect yourself and your family, please continue to follow our general guidance:

General guidance 

Ventilation in the workplace and public indoor spaces

Ventilation systems can regulate airflow and remove virus-laden microdroplets, so they do not accumulate in the room. Therefore, venture systems should be either installed or upgraded in spaces with public access – for example, institutions, schools, offices, shops and restaurants, and trains, metro and busses.

If there is no ventilation system, you have to increase ventilation by opening windows and doors to create a cross draft 4-5 times a day for 5-10 minutes at a time.

How to achieve good air quality in the workplace

 

Ventilation systems

  • Ventilation systems should be either installed or upgraded in spaces with public access – institutions, schools, offices, shops and restaurants, and trains, metro and busses, for example.
  • The ventilation system should not merely recirculate the air but introduce outdoor air.  
  • Ventilation should be frequent and effective.

 

Increasing airflow manually

  • In rooms with stagnant air and no ventilation, you must create a cross draft 4-5 times a day for 5-10 minutes.
  • Air out more often if several people occupy the same indoor space.
  • Create a cross draft every hour – before and after meetings and during breaks, for example. 
Updated 09 FEB 2021