How To Choose Air Purifiers To Improve Air Quality At Home

Air purifiers have been recommended by health authorities to prevent the spread of Covid-19 and prevent various health problems and allergies . Here you will discover which are the most effective and what we must take into account when choosing an air purifier for the home .

Respiratory diseases lead the statistics in cases of death in Spain. In 2018 alone, more than 53,000 people died as a result of a respiratory disease, due to the fact that we live with thousands of pollutants daily, both in public spaces and at home.

In 2020, the SARS-CoV-2 pandemic, has highlighted the importance of purifying the air we breathe and maintaining air quality in the environments in which we deploy our daily lives.

Air purifiers: what the health authorities recommend

In July of this year, the Ministry of Health published a document with the “Recommendations for operation and maintenance of air conditioning and ventilation systems in buildings and premises for the prevention of the spread of SARS-CoV-2.”

There, it is recognized that “there are specific equipment, either to be incorporated into the existing ones or as autonomous equipment, with different technologies and the combinations of them that are reflected in this document as an informative note because they are solutions available in the market that each technician will apply under their criteria ”, clarifying that their effectiveness“ will be the result of the combination of treatments and the application of the technologies used ”.

The document also ensures that UV-C short ultraviolet radiation, present in some filter devices, has been widely documented as a valid complementary technology to inactivate all types of pathogens including viruses.

Specifically, the health authorities recommend “to increase as much as is technically possible the filtration of recirculated air in centralized equipment , if the equipment / fan allows it, as long as the nominal air flow of the equipment is guaranteed”, opting for “filtering technologies with the lowest pressure drop ”.

6 aspects to choosing an effective air purifier

According to the sanitary recommendations and the analysis of the specialists in comparison of equipment and technologies available in the market, these are the points to take into account when choosing an air purifier for the home.

Filtering capacity

It depends on two factors: the air emission power and the filter efficiency . Filters HEPA (High Efficiency Particulate Aira), are the heart of a team of efficient air filtering.

In this regard, the health authorities indicate that “the use of portable units equipped with high-efficiency HEPA filters, located in the spaces to be treated, is recommended. (…) HEPA filters must have a highly efficient air filtration, with the capacity to retain aerosols in percentages higher than 99.95% , according to the UNE1822 standard ”.


As we mentioned earlier, the power required to filter a certain amount of air in the time specified in the specifications is one of the factors that determines the filtration capacity of the purifier.

Obviously, the larger the environment where the purifier must work, the more power will be required . If it does not have enough power, the purifier will have to operate for a longer time, which will affect the life of the equipment and the electrical consumption.

Noise level

Noise pollution should also be avoided in a home. Ideally, for sleeping, the device should have a sound emission level of less than 30 dB, although levels that do not exceed 50 dB are also acceptable .

Possibility of programming

Currently you can get programmable models, with remote control or even with a mobile application or voice controls. Scheduling can be very useful for the efficiency of the equipment, using it only when it is really necessary .

Autonomous operation by sensors

Many air purifiers include sensors that are activated by detecting an increased presence of pollutants, making them much safer and more efficient .

How To Choose Air Purifiers To Improve Air Quality At Home - 6 Aspects To Choose An Effective Air Purifier

Some featured models

Taking into account the previous recommendations, everything happens to choose a model that fits our preferences and budget.

Rowenta PU4020 Intense Pure Air , is an air purifier up to 60 m² highly valued by customers. It has sensors for the level of contamination, 4 levels of filtration and NanoCaptur technology for contaminants. Its sound emission is 45 dB and covers a total protection of up to 99.95% of air pollution in indoor spaces.

Cecotec’s TotalPure 7500 Connected model is also very efficient, up to 200 m3 of coverage, with an LED screen and Wi-Fi control. It has 3 filtration processes through the filter, PM 2.5 sensor, timer and shows the air quality using a 4-color scale

Finally, Winix Zero is also one of the most efficient thanks to its True HEPA filter (99.97%) and PlasmaWave Technology, being useful for environments up to 99m².

Brands such as Xiaomi, Phillips and Levoit , have also launched very outstanding models for their filtration capacity and customer feedback.

It is best to consult an updated comparison prepared by specialists in health issues, such as the one mentioned at the beginning of this article, to know all the specifications of the chosen purifier, on which the quality of the air that we breathe daily in our home will depend.

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