That’s a great question. Lots of air purifiers air cleaners have activated carbon filters to assist remove chemicals, odors, smoke, etc, and often it’s difficult to know if it’s still working or not or exactly when you want to modify them. The manufacturers usually provide a suggested period of time for changing filters, but then suggest that how much time an activated carbon filter lasts really depends on the amount of pollutants in the area, that is a little confusing.
A good rule of thumb is always to change out all filters, charcoal powder once per year, especially if you’re really understanding of indoor air pollution. If you’re extremely sensitive, don’t take a chance-alter your filters at any time symptoms even begin to reappear.
For the rest of us that may be unable to tell if we’re really sensitive or otherwise not, but still desire a better concept of how long our activated carbon/charcoal filters last and really when you should change them, you will find a approach to ‘test’ it-by how well it is actually still removing odors and smells.
Military grade carbon in gas masks, as well as in good carbon/charcoal air purifier filters work by absorbing or attracting airborne chemical residues within the air. And since odors and smells also come from airborne chemical molecules and residues, if an activated carbon/charcoal filter within your air cleaner remains working well, it will be able to mostly or completely remove an odor or smell in a case of minutes, right?
So, a good way to ‘test’ your activated carbon/charcoal air filter is to place your air purifier either in your kitchen after you’ve finished cooking, making coffee, or spray just a little air freshener or cologne in to the air around you, then turn the environment purifier on high for a quarter-hour or so. In the event the smell goes away completely completely or possibly is very noticeably reduced, the activated carbon/charcoal filter may well be still doing its job trapping the airborne chemical molecules in charge of the smell.
You can test the filter again later and in case it will take longer to get rid of the odors, that informs you that the carbon is ‘filling’ up and the air is needing to circulate with the air purifier a few more times to iiaqqj clean. True military grade carbon or charcoal filters (like Austin Air purifiers) will do a more satisfactory job and keep going longer, but once you start to notice that odors aren’t going away like they employed to, that carbon filter is probably ‘full’ and has to be changed to make sure you and your loved ones continue to be breathing clean air.
It is very important, however, if you’re utilizing an air cleaner for severe health issues, chemical sensitivities, or even in an industrial application where hazardous airborne chemicals are present, to replace the carbon filters or at least install fresh bulk carbon on schedule or even a little before to ensure than the air cleaner isn’t circulating more pollutants than normal since the carbon filter is saturated and simply blowing polluted air with 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 can be found, we strongly suggest using those that have your air cleaner to let you know once the filter has stopped taking out the pollutants, or if perhaps air cleaner isn’t sufficiently removing them.