What infections can you get from the air conditioner?

Author: Derrick Abernathy  |  Last update: Thursday, June 11, 2026

These can give rise to particularly dangerous and even deadly conditions – these next four are amongst the most common.
  • Respiratory tract infections. ...
  • Legionella. ...
  • Black mould. ...
  • Sick building syndrome.

What infections can you get from air conditioning?

Legionnaires' disease is a lung infection you can get from inhaling droplets of water from things like air conditioning or hot tubs. It's uncommon but it can be very serious.

What are the symptoms of air conditioner bacteria?

Legionella bacteria can proliferate in air conditioning systems, particularly in cooling towers. Inhalation of contaminated aerosols can lead to Legionnaires' disease, a severe form of pneumonia. Symptoms include high fever, cough, and muscle aches. In extreme cases, it can be fatal.

What are the symptoms of getting sick from AC?

If you work in an air-conditioned building with poor ventilation, it can raise your risk of “sick building syndrome.” Symptoms include headaches, dry cough, dizziness and nausea, trouble concentrating, fatigue, and sensitivity to odors.

What are the diseases caused by air conditioning?

Dry eyes, lethargy, dehydration, dry or itchy skin, headaches, respiratory issues, allergies and asthma, noise pollution, infectious diseases, and indoor pollutants are among the common health concerns associated with prolonged exposure to air conditioning.

Can Air Conditioning Make You Sick?

Is sleeping in AC bad for health?

​Exposure to AC will affect respiratory health​

Sleeping in a room with the AC on can lead to respiratory problems, particularly for individuals who are sensitive to cold air or have existing respiratory conditions such as asthma or allergies.

What are the common diseases caused by air?

Both short- and long-term exposure to air pollution can lead to a wide range of diseases, including stroke, chronic obstructive pulmonary disease, trachea, bronchus and lung cancers, aggravated asthma and lower respiratory infections.

How do you get rid of AC sickness?

Installing air purifiers and humidifiers can be an effective way to improve air quality and potentially alleviate coughing caused by air conditioning. Air purifiers work by removing allergens, pollutants, and other harmful particles from the air, which can reduce the risk of respiratory issues and coughing.

Can you get pneumonia from air conditioning?

The bacterium Legionella pneumophila is responsible for most cases of Legionnaires' disease. Outdoors, legionella bacteria survive in soil and water, but rarely cause infections. However, legionella bacteria can multiply in water systems made by humans, such as air conditioners.

How long does AC sickness last?

[12] The symptoms usually disappear hours or in some cases days after removal from that environment.

What are the first signs of Legionnaires' disease?

Legionnaires' disease, the pneumonic form, has an incubation period of 2 to 10 days (but up to 16 days has been recorded in some outbreaks). Initially, symptoms are fever, loss of appetite, headache, malaise and lethargy. Some patients may also have muscle pain, diarrhoea and confusion.

Can you get a sinus infection from the air conditioner?

Yes, air conditioning can affect people's sinuses for a couple reasons. The first being that cold, dry rooms trigger runny noses the same way going outside in the winter after being in your warm house does. The sudden change in temperature and humidity triggers glands in the nasal membranes to produce mucus.

Can I get Legionnaires from my air conditioner?

Domestic evaporative air conditioners

Evaporative units used for home air conditioning are a potential source of Legionnaires' disease.

Can AC fumes make you sick?

Leakage from a damaged air conditioner can harm the environment and release toxic fumes that can make you and your family sick.

What is the life expectancy of someone with Legionnaires' disease?

About 1 out of every 10 people who gets sick with Legionnaires' disease will die due to complications from their illness. For those who get Legionnaires' disease during a stay in a healthcare facility, about 1 out of every 4 will die.

Can you get listeria from an air conditioner?

However, the condensation of water on the metal coils of these systems can provide a favourable niche for the growth of Listeria monocytogenes. Contamination of an air conditioning system can also act as a vector, spreading the pathogen throughout the factory.

How do I know if my AC is making me sick?

The most common air conditioning-related sickness symptoms are minor ones. You may experience sneezing, coughing, or a sore throat from air conditioning. These symptoms usually occur due to hair or dust in the air, not viruses or bacteria.

How do you get rid of Legionella in your home?

Chemical Disinfection. Chemical disinfectants, particularly oxidizing agents such as chlorine, chlorine dioxide, chloramine, and ozone, are widely used to control Legionella spp. and protozoa—both as disinfectants in drinking water distribution systems and as secondary disinfectants within buildings.

Can AC cause bacterial infections?

Evidence suggests that patients exposed to air-conditioning systems had higher risks of acquiring a viral, or hospital-associated bacterial or fungal infection, the latter potentially causing invasive pulmonary mycoses.

What bacteria is in the air conditioner?

For example, consider the issue of bacteria in air conditioning that cause Legionnaires' disease. The truth is, Legionella Pneumophila bacteria breed in water and not inside air conditioning ducts and filters. So water supply systems and air-conditioner cooling towers are the major breeding grounds for this bacteria.

Can air conditioning give you bronchitis?

Air conditioning impact on respiratory health

Moreover, respiratory infections may be caused by cold air because of increased bronchial inflammation which works alongside other trigger factors such as infection, pollutant inhalation, cigarette smoke, and irritants present in the air.

Can mold in AC make you sick?

Mold that finds a way into your home can cause such symptoms as throat irritation, wheezing, and congestion, according to the Centers for Disease Control and Prevention. Living with a moldy air conditioner "would increase your chances of having a respiratory infection," says Mark Mendell, Ph.

What are the five airborne diseases?

Airborne Disease List
  • Influenza (flu)
  • Measles.
  • Tuberculosis.
  • Chickenpox.
  • Pneumonia.
  • Severe Acute Respiratory Syndrome (SARS)
  • Middle East Respiratory Syndrome (MERS)
  • COVID-19.

What are 3 different diseases caused by air pollution that make people sick?

The combined effects of ambient air pollution and household air pollution are associated with 6.7 million premature deaths annually. Household air pollution exposure leads to noncommunicable diseases including stroke, ischaemic heart disease, chronic obstructive pulmonary disease (COPD) and lung cancer.

What is a droplet infection?

A droplet infection is caused by bacteria or viruses that are released into the air when sneezing, coughing or speaking and hit the mucous membranes of the mouth, nose or eyes of a person in the vicinity.

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