A: The Kinetico drinking water systems do have 3 filters and it can be confusing. The pre-filter (yellow or purple colored) and post-filter (orange colored) would need to be changed. These are the two outside filters. The middle filter, the membrane, is changed every 7-10 years.
How much did you pay for your Kinetico water softener?
One common desalination method, reverse osmosis, is expensive because it requires a great deal of electricity to push water through a filter. It's also costly to treat the water to kill microbes and to replace the filters. Researchers are hoping that improved membrane materials could make this process cheaper.Dec 3, 2014