Cold from air conditioning: is that true?

It is a common belief that air conditioning can cause a cold. From a scientific point of view, however, there is only an indirect connection.

Again and again one hears the claim that air conditioning can lead to colds. But is that really true? The summer months are often characterized by high temperatures, and many people long to cool down indoors. One of the popular ways to combat the heat is to use air conditioning. In fact, air conditioning can weaken the immune system.

Can an air conditioner cause a cold?

The short answer is: not directly. An air conditioner by itself cannot directly cause a cold. Because the cause of a cold is not the sensation of cold, but viruses that are transmitted from person to person, usually by droplet infection. Most cold viruses are not spread through air conditioning, but through close contact with infected people or objects.

Nevertheless, air conditioning can weaken the immune system and thus make the body susceptible to viruses.

Indirect connection between cold and air conditioning

However, there is an indirect connection between the use of an air conditioner and a cold.

According to the Kurier, using air conditioning can cause the mucous membranes to dry out from the cold drafts. If the mucous membranes are dry, they become more susceptible to viruses because they can no longer optimally fulfill their protective function. This can lead to being more easily infected when exposed to cold viruses.

According to the AOK, another factor that contributes to the risk of infection is the temperature difference. Spending a long period of time in an air-conditioned room and then going outside in the heat can cause your body to struggle to adjust to the sudden change in temperature. This can temporarily lead to reduced immunity and increase the chance of infection.

Improper maintenance can also lead to air conditioning systems spreading bacteria and other germs. The systems cool the air by removing moisture from it. If the condensation in the air conditioner does not drain properly or collects in places, bacteria, mold and other microorganisms can develop in it. These can then get into the airflow and be distributed in the room. This is primarily a big problem for people with immunodeficiency, according to specialist Constanze Wendt compared to Fitbook.

By the way: You can also lower the inside temperature with a room cooler. This works according to the principle of evaporation and not with the removal of moisture.

Air conditioning and cold: tips and hints

In order to protect yourself from a cold, it is therefore advisable not to use an air conditioner. This also protects the environment and saves electricity. During heat waves, you can cool your apartment without air conditioning. This can be done, for example, by ventilating when it is hot.

If you still want to turn on the air conditioning every now and then and avoid a cold, there are measures you can take in this case as well:

1. Regular cleaning and maintenance: Clean and maintain the air conditioner regularly to prevent the build-up of bacteria and mold. You should replace clogged filters regularly.

2. Appropriate temperature setting: Set the air conditioner to a moderate temperature that is not too cold. Too low a temperature can lead to a strong feeling of cold and dehydration of the mucous membranes. The inside temperature should never be more than six degrees Celsius below the outside temperature.

3. Maintain humidity: Adequate humidity in the room can help prevent the mucous membranes from drying out. You can get more tips here: Increase humidity: Tips for a better indoor climate

4. Match Clothing: Match your clothing to indoor temperatures. In high temperatures, wear light, breathable clothing if possible to avoid overheating. However, also pack a light sweater or jacket if you know you will be in an air-conditioned room for a long time.

5. Take breaks: Take regular breaks from the air-conditioned environment to give your body time to adjust to the outside temperature.

Read more on Techzle.com:

• What to do when it’s hot 5 tips from Southern Europe
• Heat in the office: What you can do about it
• 7 common mistakes to avoid when it’s hot