When deciding to purchase an air cleaner, as well as looking for a unit that is both affordable and effective for your requirements, it is advisable to check the types of air purifier filters used in the unit and also how much those filters are to replace.
It is important to note is that although most air purifiers use filters, there are a number of units on the market that are filter less. In place of a filter, these units use a collection grid, which just needs to be wiped off with a damp cloth.
There are several different types of air purifier filters with some being able to be cleaned with water while vacuuming can clean others. Some filters need to be replaced after several months or every couple of years.
HEPA Air Purifier Filters
The most popular and effective type of filter for air purifiers is the HEPA filter. High Efficiency Particulate Air or HEPA filtered air purifiers do a great job in removing allergens, dust and dirt from the air but they are not so good when it comes to odors and smoke.
The strict requirements controlling HEPA necessitate being able to filter out 99.97% of airborne pollutants of 0.3 microns in size. While it is true that HEPA air purifier filters are very effective, they are also expensive to replace, sometimes costing nearly as much as the air purifier itself.
To overcome this problem, many HEPA filter air purifiers also use a pre filter in order to reduce the frequency of HEPA filter replacement. In a world where you often get what you pay for, an air purifier with HEPA filters is definitely worth the extra cost when you consider how much more of the harmful bacteria and air particles it is able to filter out when compared to other filters.
Some air purifiers on the market use filters that do not actually need replacing. Instead, the filter can be vacuumed or in some instances, washed under the tap. However, for an air purifier filter to be effective, it needs to be replaced at regular intervals rather than being rinsed or vacuumed.
Replacement Costs of Air Purifier Filters
When deciding on a particular air purifier, as well as checking the replacement filter cost, you should also find out how often the filter needs to be replaced. The running costs of a unit where the filter needs to be replaced monthly is going to be a lot more expensive than one whose filter only needs replacement every twelve months.
As a rule of thumb, if you pay less for a filter air purifier in the beginning, you will more than likely pay a lot more in the long run due to the cost of replacement filters and the number of times that filter needs replacing over the lifetime of the air purifier.
At the end of the day it pays to do your homework before investing in an air purifier as the type of filter used has more of an impact that the actual machine itself.
Depending on your requirements, HEPA are the best types of air purifier filters but will more than likely cost more in the beginning.