QUOTE(goolie @ Aug 17 2023, 09:03 AM)
Joven JP200 filter is water purifier? What is different between water purifier and under sink filter?
Water purifier

Under sink filter

If not going to place it under sink, is water purifier same concept as this one?

Technically the Joven JP200 is a filter, but the marketing calls it a "purifier" because it removes excess chlorine smell. But true purifiers also decontaminate biological pollution (bacteria virus mold etc):
https://www.aquasana.com/info/water-filter-...urifier-pd.htmlAs for the difference between something like Joven JP200 and under sink filter, it's a question of countertop space, cost, and filtration capabilities.
Countertop like JP200: Cheaper overall, rent friendly (not a permanent installation/no need to drill or screw to cabinet), easy to install (typically can buy and plug to faucet), cartridge is not as efficient as undersink, might not remove contamination well if water super polluted.
Under sink: Needs to be mounted on wall/counter which is not possible if you're renting a house, more expensive, stronger filters, more "elegant" because it's not visible on counter, frees up your counter space.
The above link explains more detail, but I extract for you below:
Countertop water filtersCountertop water filters offer great filtration and convenience, as these systems can be installed exactly where you want such as within your kitchen. In fact, some countertop water filters can be attached directly to your faucet while others can be placed elsewhere if you’re lacking space by your sink.
While countertop water filters do offer a great level of filtration, it should be noted that they typically aren’t as powerful as whole house or under sink systems. As such, if you’re looking for maximum contaminant removal, you may want to consider other options.
Under sink water filtersUnder sink water filters offer similar convenience to countertop filters, but are installed below the sink which means they’re out of sight and you gain more countertop space.
They also typically offer greater filtration performance, as many use a combination of activated carbon/catalytic carbon, plus ion exchange to capture and prevent those pesky contaminants from entering your water, like chlorine, chloramines, heavy metals, chlorine-resistant cysts like giardia and cryptosporidium, pharmaceuticals, and more.