Wells Thailand offers a range of four tankless reverse osmosis water purifiers that instantly provide your family with safe and pure drinking water. We’ll explain why the tank vs tankless RO purifier battle is quickly being won by tankless RO water purifiers and a new alternative.
Let’s start by explaining how reverse osmosis works before we consider the pros and cons of tank vs. tankless RO systems.
How Reverse Osmosis Works
Reverse osmosis (RO) is a filtration system with extremely fine membrane pores capable of removing particles as small as 0.1 nm (nanometers). The technology has existed since the 1950s and was used mainly for desalinating seawater or brackish water sources.
RO membranes are the smallest and finest in diameter today and can remove all ions and impurities from a water source.
Introducing Wells The One
However, not every tankless purifier is an RO system. Wells The One is a tankless water purifier for home use that employs nanofiltration (NF) with a 2-filter, 9-step process and advanced hygiene features that target bacteria (99.99%), microplastics, and select heavy metals.
NF has coarser filtration and can remove particles and impurities from 0.002 to 0.005 in diameter. However, this sort of filtration has its benefits. It can remove harmful contaminants while allowing some smaller beneficial minerals to remain.
Wells The One offers an alternative between tank and tankless RO systems.
Why Storage Tanks Were Introduced
While reverse osmosis is extremely thorough and efficient in purifying water of ions, original RO purification systems used outdated technology that resulted in an extremely slow water flow.
Many engineers responded to the problem by including an approximately three-gallon sealed water tank along with the purification system to store water for later use.
Trend Toward Compact Tankless RO Solutions
With the upgrades to the RO system currently in use today, many people are choosing a compact tankless RO purifier over the old tanks.
They understand that while the RO tanks could store water for later use, the water still has to go through the time-consuming purification process at some point.
Storage tanks also use up precious kitchen counter or under-sink space, and there’s the perpetual fear of secondary contamination by pollutants and bacteria that may accumulate on the tanks’ walls.
Pros and Cons of Tankless RO Systems
Despite their growing popularity, we want to offer a balanced viewpoint of the pros and cons of tankless RO systems.
The Pros:
- Delivery of purified water at a consistent rate
- Uses much less counter or under-sink storage space
- No tank means a reduced chance of contamination
- Higher efficiency in purification means less wastewater
- Improved system design makes filter changes and maintenance fast and easy
- Improved electrical connections include smart designs that indicate filter status
- Slim, space-saving designs are ideal for modern kitchens and small condos
- Tankless RO systems offer quieter and more efficient pumps
- Many have touch displays with precise temperature presets (cold/room/hot/baby formula)
The Cons:
- Slightly higher initial investment than tank RO systems
- Always requires electricity to use
- Slower initial output and lower water pressure make them incompatible with ice makers or coffee makers without pressure boosters
- Possible “TDS Creep” (Total Dissolved Solids) is when the system may allow unfiltered water to pass in the first seconds before the pump has been engaged for filtering.
Why Choose Wells’ Nanofiltration Technology?
Why Wells The One is considered a viable alternative to tankless RO systems:
- Freshness and hygienic water supply: On-demand NF + auto-drain/sterilization mitigates stagnation
- Taste and beneficial minerals: NF helps preserve natural taste by retaining more minerals than typical RO
- Speed & convenience: high, consistent flow without a storage tank
- Space & Design: ultra-compact units for modern kitchens and condos
- Compact size: 8.8 cm diameter frees valuable counter space
- On-demand temperature control: select cold, hot, or room-temp water instantly
- Usability: easy touch display and precise temperature presets (cold/room/hot/baby formula)
- Advanced sterilization: automatic pipe drainage and H+ ceramic cartridge for superior hygiene
- Award-winning design: extremely compact (one of the smallest), sleek aesthetics that complement any kitchen décor
- Reliable and extensive after-sales service: installation, filter replacements, and technical support across Thailand
Contact Wells Thailand
To learn more about this new nanofiltration alternative to tankless RO systems, contact Wells Thailand today and experience Wells The One for reliable, space-saving, and stylish hydration.
- LINE OA: @wellsthailand ; https://bit.ly/36pYHXp
- Contact number: 082-826-4999
- E-mail: info@wellsthailand.com
References:
- Storage Tanks vs. Tankless Reverse Osmosis Systems: What’s the Difference? – Retrieved September 2, 2025, from: https://www.waterworld.com/residential-commercial/article/14306937/storage-tanks-vs-tankless-reverse-osmosis-systems-whats-the-difference
- Tank VS Tankless RO Water Purifier – Which is Better? – Retrieved September 2, 2025, from: https://www.waterdropfilter.co.uk/blogs/buyers-guides/unveiling-the-truth-about-ro-tank-vs-tankless-which-wins?srsltid=AfmBOookWFjELqeGMbsSLgEJSnBWg9LBhCFpDupjve3gwHtp_ocCf–C
- Reverse Osmosis vs Nanofiltration Membrane Process: What Is the Difference? – Retrieved September 2, 2025, from: https://samcotech.com/reverse-osmosis-vs-nanofiltration-membrane-process-what-is-the-difference/#:~:text=NF%20delivers%20slightly%20coarser%20filtration,sodium%20chloride%20to%20pass%20through.
