When you visit the market for air purifiers, you will come across those with filters and also units without filters. Let us get into a comparison between these two models.
It is true that both air purifier without filter and those with filters are designed for improving the indoor air quality, but they are different in the way in which they approach the problem. If you are planning to invest in the best air purifier, it would be a great idea to understand the difference between these two types, so that you will be in a position to arrive at an informed decision. Let us understand the difference between the two models:
The ionic air purifiers come under the category of filter-less models and they are of two types and they are air ionizers and electrostatic precipitators. The models without filter can be attractive for buyers as they will not have to replace the filters frequently.
When it comes to electrostatic precipitators, they make use of positively and negatively charged plates for collection of particulates as they pass through. As against replacing the filter, the maintenance work to be done by the buyers of this model is that they must wash or clean the plates. Even though, this model is cost-effective, the problem with this model is that there will be a lot of performance issues as compared to the best air purifiers with filters. This model will perform at its best only when the plates are clean. However, even in this case, it showcases worse performance as compared to those with filters. When the plates are dirty, the performance further degrades.
In addition, the charged plates also produce ozone. For people with conditions like asthma and COPD, ozone can create a whole lot of problem.
Air ionizer is another type of ionic air purifier and even though this model does not have filters, they send out a charge that connects to the airborne particulates, which then connects to something else for getting removed from the room. The problem here is that the something to which the particulates attaches can be anything like carpet, walls, clothes and even your lungs.
Even though, cost-effective, models that are filter-less are not recommended for those looking for air purifiers for asthma relief.
Air purifiers with filters:
These are otherwise called as air purifiers with HEPA filters and this technology is stated to be the best in air purification. The best air purifier for dust with filters generally gets efficient over time. This means that the more dust they gather better will be the performance. Even though, this model needs filter replacement, this should be done to ensure that you and your family remain completely safe against dirt, dust and pollutants.
Changing of filter:
The filters begin collecting particulates right from the beginning of usage and this in turn will increase the air flow resistance, which thereby results in lesser flow of air through the filter and so performance towards air cleaning will reduce. So, replacement of air filters should not be postponed when you invest on the best air purifier with filters.
To conclude, as compared to filter-less models, those with filters are safe to invest on.