This is the most basic type of RO water filter, consisting of a sediment pre-filter, activated carbon pre-filter, RO membrane, and post-carbon filter. It removes impurities, such as sediment, chlorine, heavy metals, and dissolved solids, from the water.
This type of RO water filter is installed beneath the sink and connects directly to the water supply line. It typically consists of multiple filtration stages, including a sediment filter, activated carbon filter, RO membrane, and post-carbon filter. Under-sink RO filters are popular for residential use as they provide a continuous supply of purified water to a dedicated faucet.
Countertop RO filters are compact units that sit on the kitchen countertop and connect to the existing faucet through a diverter valve. They are convenient and portable, requiring no installation or plumbing modifications. Countertop RO filters usually have fewer filtration stages than under-sink models but still provide effective water purification.
As the name suggests, whole-house RO filters are designed to treat water for an entire household. These systems are usually installed at the point of entry where the main water line enters the house. Whole-house RO filters employ multiple filtration stages and have a high capacity to handle large volumes of water. They ensure purified water is available for all household uses, including drinking, cooking, bathing, and laundry.