Countertop reverse osmosis water purifiers, ready to use in any kitchen. No installation work, no plumbing connection, and no drainage required — just place the device, fill the tank, and plug it in.
Reverse osmosis is the technology that acts on the dissolved fraction of water: limescale, nitrates, heavy metals, and the chlorine responsible for the pool taste. It makes a noticeable difference in hard water areas, such as Lisbon, Alentejo, and Algarve.
Which to choose
- UMBOX W16 — for couples and small homes. Reverse osmosis with instant hot water.
- UMBOX W19 — the most balanced option for families. Hot and cold water, 8L tank, and UVC sterilization.
- UMBOX W91 — for those who host guests at home. Hot water, cold water, and ice production in 8 to 15 minutes.
Conditions for the entire range
- Free shipping to mainland Portugal
- 3-year warranty, in accordance with Decree-Law no. 84/2021
- Product by order — shipping in 10 to 20 business days after payment confirmation
- Customer support in Portuguese
Unsure between technologies? Read our water purifier buying guide — we compare reverse osmosis, ultrafiltration, and filter pitchers, with annual costs and the eight points to check before buying.




