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Daikin: Indoor Air Quality Solutions

Indoor Air Quality (IAQ) refers to the air quality in a building or structure, breathed in every day by the building’s occupants.

When planning new residential buildings, schools, offices or light commercial buildings, many things must be considered. Besides structural factors, there are also the topics of heating, cooling and something often neglected: indoor air quality.

Did you know that the indoor air we breathe, whether at home, in the office, in a hotel room, could in fact be much more polluted than the air outside!

90% of our lives are spent indoors. Furthermore, indoor air quality can be two to five times worse than outdoor air quality because of pollutants such as pollen, bacteria etc.

Indoor Air Polutants and Particles

With the right system (air conditioning, ventilation, air purification equipment) air pollutants such as pollen, spores, cement dust, bacteria, viruses or germs can be filtered out of the air.​

​The smaller these particles, the more dangerous they are for our health, therefore particulate matter is categorized based on their size.​

Particles & Areas of Deposit

The lighter and smaller a particle is, the longer it stays in the air.

• PM10 : all particles up to 10 µm (0.01 mm)
Deposit in the nose and pharynx of the human respiratory system

• PM2.5 : all particles up to 2.5 µm (0.0025 mm)
Are small enough to reach the human lung

• PM1 : all particles up to 1 µm (0.001 mm = 1 micron)
Are small enough to find their way through the cell membranes of the alveoli into the human bloodstream and cause life-threatening diseases

Due to their harmfulness (high risk for cardio vascular diseases), permanence and frequency, particles smaller than 2.5 μm (i.e. PM2.5 and PM1) need the most attention.

Indoor Environment Quality Components

Ventilation: Ensures the provision of fresh and clean air

Energy recovery: Delivers energy savings by transferring heat and moisture between airflows thus helping to bring supply air to the required indoor conditions for temperature and humidity

Air processing: Delivers the required conditioned air to optimize the energy efficiency of indoor HVAC equipment

Humidification: Ensures the desired moisture level in the conditioned space

Filtration: Ensures clean and healthy air by filtering out pollen, dust, odors and other contaminants that are harmful to our health

Let’s have a closer look at Ventilation and Filtration, 2 components directly linked to improved Indoor Air Quality.


Ventilation systems ensure optimal climate conditions by providing a fresh, healthy and comfortable environment for buildings of all sizes and different applications.

In a completely enclosed room in a building, air cannot easily enter or leave, causing air pollutants to remain and accumulate in the room. Ventilation is essential for diluting and removing these air pollutants.

A well-maintained ventilation system and adequate air exchange rate have been demonstrated to be an effective solution to protect people from contaminants, including viruses.

Daikin ventilation products are seamlessly integrated in a total heat pump solution, so you reduce the number of individual systems and independent suppliers for your HVAC-R system.​

To achieve optimal ventilation, Daikin maintains the highest standards of energy efficiency and has a wide range of options to achieve the needed filtration and hygienic levels for your project.​


Virus particles can piggyback on larger dust particles or droplets and travel through a building. Infectious diseases can be controlled by interrupting the transmission routes used by a pathogen. Using high-efficiency air filters in air conditioning and ventilation systems can help to capture the majority of airborne particles, reduce the airborne concentration of bacteria and viruses and thus the risk of transmission through the air.

With a good filtration system you can capture very small Particle Matter from the airstream, but the captured viruses, bacteria and fungal organisms are not inactivated. They can still replicate and potentially cause diseases.​

In order to prevent this from happening air disinfection is needed.​

There are Daikin IAQ Solutions for every need. Find out more at Daikin.

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