A lot of people talk about Indoor Air Quality and there are various studies proving why #IAQmatters. Unfortunately, some HVAC suppliers exploit Indoor Air Quality as a pure marketing instrument without being able to explain how their products contribute to a healthier indoor climate.


What can you practically do to ensure a healthy indoor environment?
In the following, we provide you with hands-on solutions.


Do you have any other suggestions?
#IAQmatters is an open-source campaign and we’d be happy to hear about them. Let us know via [email protected] and we’ll add them to this portal.


When did you last change your air filter?

State-of-the-art air filters are key to ensure a healthy indoor air quality while ensuring a lower energy demand of your ventilation products. Make sure that your air filters perform as they should and change them regularly.

As the only performance certification for air filters worldwide, the ‘Eurovent Certified Performance’ label for air filters provides for a good indication whether you have a good performing air filter — on an easy to understand A (best performing) to G (worst performing) rating scale following latest standards and legislation.

Next time you buy an air filter, remember to ask whether the filter is Eurovent certified.


When was your ventilation equipment last cleaned?

Keeping HVAC equipment clean and hygienic is very important to ensure a healthy indoor environment.

Your building service provider or maintenance personnel should ensure that your HVAC equipment is always clean. No mould, dirt, dust or particles should infiltrate your units.

To go a step further in ensuring the hygienic safety of your ventilation equipment, opt for components with sound hygienic certification.

Remember that cleaning should never take place with a running unit! Ensure that all necessary safety measures are taken as provided by your supplier.


Do you ventilate

It is important that you ensure a constant renewal of your indoor air. Studies have proven that the air in rooms should optimally be exchanged with fresh air six times per hour. Unfortunately, this is far less in most buildings. Especially in the Middle East, often only a recirculation of the indoor air through room air conditioners takes place with no air exchange at all.

At first sight, the most logic solution would be to open windows. However, it is not. Why? In most locations, the incoming outdoor air is polluted as well. When opening the window, you let particles inside that you’d want to avoid.

The key is thus state-of-the-art mechanical ventilation equipment that exchanges, filters, and recovers the air. Does your building have what it takes to provide a good indoor air quality?


How does your air handling unit look from the inside?

An air handling unit or air conditioning system might look good from the outside. Yet, it pays off to have a closer look inside.

An HVAC supplier can produce a nice unit, but can also save on the quality of the installed components, make it difficult to clean the unit due to sharp corners, or include control equipment and sensors that cannot provide the optimal level of comfort and optimise the use of energy.

High quality components are of utmost importance to ensure a proper functioning of your HVAC equipment that can not only ensure a good indoor air quality, but also reduce your energy bill.


Does your ventilation unit have a pressure drop indicator and an air flow meter?

The easiest and safest way to figure out whether your filter needs to be replaced or not is through a pressure drop indicator (or manometer). The higher the pressure drop after the air filter, the worse is the filtration and energy efficiency.

The dimensioning and the operation of almost every air handling unit depends on the air flow rate. It is unusual to put ventilation systems into service without an effective control of the flow rate during operation. This would be comparable to driving a car without a speedometer, fully relying on your instincts.

An air flow transmitter is showing the current flow of a ventilation and air conditioning system to the operator. Additionally, the air flow value is transmitted to higher-level control technology. The result is a demand-controlled, more energy-efficient and healthy unit.


Do you possess an air cleaner/purifier?

Especially in residential buildings, air cleaners/purifiers can be useful tools in improving the indoor air quality of your rooms in addition to mechanical ventilation systems.

However, not each of these products does what it promises. In some cases, the wrong air cleaner can even worsen your air quality.

Ensure that you only invest in state-of-the-art equipment with high quality and exchangeable air filters. It might be a bit more expensive, but will pay off in the mid- and long-term.


Do you have the correct level of humidity in your building?

It is important to maintain a healthy level of humidity, which can be achieved through mechanical ventilation equipment.

Dust mites and mould love moisture. Keeping humidity around 30%-50% helps keep them and other allergens under control. A dehumidifier (and air conditioner during summer months) helps reduce moisture in indoor air and effectively controls allergens. A humidifier can be helpful during winter or in hot climates, raising the level of humidity back within the range, when dropped too low.

An air conditioner with a high-quality filter also reduces indoor pollen count.


Is your HVAC equipment certified?

Have a look at our dedicated certification section, which introduces tools that can support you in choosing high performing ventilation and air conditioning equipment that contribute to a better indoor climate.