What is “channeling” or “dumping” means?
“Channeling” is water passing through least resistant path of the granule bed avoiding contact time with carbon resulting lower effectiveness. “Dumping” is sudden change in your water pressure releasing the trapped contaminants into your glass. “Dumping” can occur also if your carbon filter media is exhausted (over used). Some times this is visible as a “gray” water but most often is not. This happen with pressure filter cartridges. Sounds like the GAC water filters are terrible buy? Not quite. If your water is municipally supplied a well designed GAC filter with changeable cartridge is all you’ll need, don’t forget to change the cartridge at least every 6 months. Avoid those “high capacity” throw away filters unless you use that capacity within 6-9 months.
