Let’s say it clearly: the effectiveness of an air purifier – a concept valid for any household appliance – depends entirely on its maintenance. A neglected appliance will lose its filtering properties and could even become counterproductive, putting the same pollutants it is supposed to eliminate back into the environment.
Regular cleaning therefore represents the key element to protecting your home environment and always being guaranteed healthy air.
The filtration system: heart of the purifier
Modern purifiers use multiple filtration systems that combine different technologies.
There are HEPA (High-Efficiency Particulate Air) filters, capable of capturing 99.97% of particles up to 0.3 microns, including bacteria, viruses, pollen and dust mites. Then we have activated carbon filters which absorb gases, volatile organic compounds and odors thanks to the porous structure which ensures a large adsorption surface. Finally, we find the pre-filter, responsible for capturing larger particles such as hair, coarse dust and pollen, whose task also includes the protection of the main filters, with a consequent increase in their lifespan.
Thanks to this stratified system, the system guarantees complete purification, and at the same time will require specific maintenance for each component.
Consequences of failure to clean
An unmaintained purifier can cause skin problems, throat inflammation, dry eyes, headaches, tiredness and even legionellosis. Clogged filters lose their effectiveness and encourage the proliferation of mold and bacteria inside the appliance, which are then released back into the environment.
The saturation of the filters also leads to an increase in energy consumption and greater noise of the appliance, aspects which compromise home comfort and reduce the life of the device.
Cleaning procedure: step by step
Cleaning the purifier requires attention and precision. Before starting any operation, it is essential to turn off and disconnect the appliance from the electricity supply to operate safely.
Pre-filter
The pre-filter, a simple mesh of plastic material, must be removed and lightly slammed on a flat surface to remove debris. You will then have to rinse it under a moderate jet of water, using a brush to remove all impurities, before letting it dry in the open air.
HEPA filters
HEPA filters are composed of microfibre filter sheets and woven glass fibers, and are particularly delicate.
Cleaning should be carried out every 3-6 months by hand washing with water only, therefore absolutely avoid the dishwasher. Make sure the filter is completely dry before reassembling it: you will avoid blockages and problems.
Activated carbon filters
The activated carbon filters should be rinsed under cold water without aggressive detergents. When they become too saturated, they lose their absorption capacity and must necessarily be replaced. The frequency of replacement depends on the intensity of use and environmental conditions.
External components
Not just filters! The body and grills of the purifier should be cleaned with a slightly damp cloth. The air analysis sensors, when present, are usually located on the back of the appliance behind a door and can be cleaned with a damp cloth to eliminate dust that could distort the readings.
Maintenance frequency
Cleaning should be at least monthly, although the frequency may increase and will fundamentally depend on the conditions of use. In the presence of pets, smokers or in particularly polluted areas, maintenance may be necessary every two to three weeks. The filters must be replaced at least twice a year, with checks having to be more frequent in environments exposed to high humidity.
Filter types and specifications
HEPA filters are available in different categories: antibacterial, more expensive but capable of killing bacteria once deposited, and standard, which simply retain particles. Activated carbon filters vary in the quantity of absorbent material: the greater the quantity of activated carbon, the more effective the removal of pollutants.
Advanced filters can be infused with different compounds – such as magnesium dioxide and copper oxide – to remove the most dangerous pollutants, such as carbon monoxide, ethylene oxide and ozone.
Warning signals and replacement
Modern purifiers often have lights that indicate when the filters need to be cleaned or replaced. In the absence of these indicators, you will have to visually check the condition of the filters: if they appear very dirty and/or damaged and cleaning has failed to produce good results, you will probably have to replace them.
The use of original spare parts is always a good choice to maintain the performance of the device unchanged, given that often non-compatible filters can compromise the effectiveness of purification and damage the device.
Advantages of correct maintenance
As mentioned at the beginning, an air purifier left to itself will stop working and become useless. Cleaning and maintenance therefore contain many advantages: a well-maintained purifier continues to effectively remove viruses and bacteria from the air, thus maintaining high air quality standards. Regular cleaning also ensures quiet operation, reduces energy consumption and prolongs the life of the appliance.
For those who suffer from allergies and respiratory problems, constant maintenance is especially important: only a clean purifier can offer the necessary protection against allergens, mold spores and other airborne contaminants.
Correct maintenance of the air purifier essentially represents an investment in family health and in the efficiency of the appliance. With a few regular gestures, it will be possible to guarantee clean and healthy air in the home, while optimizing the performance and life of the device.
