That’s a fantastic question. Lots of air purifiers air cleaners have activated carbon filters to help remove chemicals, odors, smoke, etc, and sometimes it’s tough to know if it’s still working or not or exactly when you want to alter them. The manufacturers usually offer a suggested time period for changing filters, but then claim that just how long an activated carbon filter lasts really depends on the amount of pollutants in the area, which is a little confusing.
A good rule of thumb would be to change out all filters, charcoal teeth whitening once per year, particularly when you’re really responsive to indoor air pollution. If you’re extremely sensitive, don’t take a risk-alter your filters any moment symptoms even start to reappear.
For the remainder of us that could struggle to determine if we’re really sensitive or otherwise not, yet still need a better concept of how much time our activated carbon/charcoal filters last and extremely when you should change them, there is a way to ‘test’ it-by how good it is actually still removing odors and smells.
Military grade carbon in gas masks, and then in good carbon/charcoal air cleaner filters work by absorbing or attracting airborne chemical residues within the air. And since odors and smells are available from airborne chemical molecules and residues, if the activated carbon/charcoal filter in your air cleaner is still working well, it should be able to mostly or completely remove an odor or smell in a case of minutes, right?
So, one method to ‘test’ your activated carbon/charcoal air filter is to put your air cleaner either in your kitchen after you’ve finished cooking, making coffee, or spray just a little air freshener or cologne to the air around you, then turn the environment purifier on high for 15 minutes or so. If the smell disappears altogether completely or perhaps is very noticeably reduced, the activated carbon/charcoal filter is probably still doing its job trapping the airborne chemical molecules responsible for the smell.
You can test the filter again later and when it requires longer to remove the odors, that lets you know that the carbon is ‘filling’ up as well as the air is needing to circulate through the air cleaner more times to iiaqqj clean. True military grade carbon or charcoal filters (as with Austin Air cleaners) will do a more satisfactory job and last longer, but once you start to observe that odors aren’t disappearing like they utilized to, that carbon filter is most likely ‘full’ and has to be changed to successfully and your loved ones are still breathing clean air.
It is vital, however, if you’re using an air cleaner for severe medical issues, chemical sensitivities, or perhaps in an industrial application where hazardous airborne chemicals are present, to switch the carbon filters or at a minimum install fresh bulk carbon on schedule or perhaps a little before to make sure than the air cleaner isn’t circulating more pollutants than normal as the carbon filter is saturated and just blowing polluted air from the unit.
In addition there are various electronic and saturation / color change type chemical and VOC detectors and then for any industrial applications where dangerous vapors or gases are present, we strongly recommend using those that have your air cleaner to let you know if the filter has stopped eliminating the pollutants, or maybe the environment cleaner isn’t sufficiently removing them.