3 Best Under Sink RO Water Purifiers in India – Reviews

Water purifiers have become an integral part of our lives.

Today I am going to talk about a type of water purifier that is not so common in Indian homes.

Unlike India, under-sink water purifiers are the preferred choice for homes in the U.S. and Europe.

However, these water purifiers are slowly gaining popularity in India too.

The biggest reason for their growing popularity is the fact that kitchens of the most newly constructed homes & apartments have a provision for under-sink purifiers only.

Under-Sink water purifiers do what other water purifiers do, the only difference being the fact that they can be installed below your kitchen sink.

Highly efficient, Under-the-Counter RO systems work hidden and out of sight, making them the best choice for all design perfectionists.

Apart from the looks, the best part is saving up on space. These purifiers don’t encroach onto your much-needed counter space. Instead, they can be fitted neatly below sinks, making your kitchen work space as tidy as can be.

And it’s not like you’re compromising on filtration strength. They perform just as skillfully as any other purifier out there.

All the while adding to the beauty of your Kitchen, two benefits for the price of one!

Now here are some suggestions for you to pick the best-of-the-rest when it comes to the Under-sink RO water purifiers market.

Reviews of the Top 3 Under Sink Water Purifiers in India

1

AO Smith Z2+ Under Sink RO Water Purifier

Sleek & Compact Design, 6-Stage Purification, Filter Change Alerts

The innovator of the industry, AO Smith, never stops surprising. This time with their 6-Stage purification under-sink RO.

This water purifier purifies water using a Pre-filter, Sediment Filter, Pre Carbon Filter, RO Membrane, and SCM-TECH (Silver Activated Post Carbon) + MIN-TECH (Mineraliser Technology).

It’s all the filtration you’d ever need.

Exclusive patented SSM Technology (Side Stream RO Membrane) purifies water with high TDS up to 2000 ppm.

This purifier is also known to waste less water with improved water recovery.

AO Smith Z2+ throws special focus on the best possible removal of suspended solids and sediments. They’ve achieved this with some pretty nifty Advanced Pre-Filters and Sediment Filters.

The MIN-TECH cartridge adds essential minerals (Calcium and Magnesium) to give you purified water with a balanced pH and a great taste.

Giving out a storage capacity of 5 litres and a purification capacity of up to 15 litres per hour.

All this comes with WQA certification for their RO membranes and everything. Maintaining all ANSI 58 and NSF standards.

The Z2+ comes in a very sleek and compact design and easily fits under smallest of kitchen sinks. The storage tank is also placed inside the purifier housing.

Needs Very Small Space for Installation

This product comes with a gooseneck swivel faucet that gives you complete freedom and convenience.

Unlike other under-the-counter RO purifiers, the Z2+ features a very informative and useful digital display with a full range of indicators and alerts.

Apart from the regular indicators for purification on/off, low water pressure, and tank full, this product gives you advanced alerts when the RO membrane and other filters need to be changed.

Positive
  • Comes with an external pre-filter
  • Sleek & Compact design
  • RO membrane and filter change alerts
  • 1-year comprehensive warranty (includes RO membrane)
  • The storage tank is provided inside the purifier unit
  • Balances the pH level and improves the taste of purified water
  • LED indicators
Negatives
  • Price is a little high
  • A small storage tank of just 5 litres
  • Not suitable for big families

2

KENT Excell Plus Under Sink RO Water Purifier

7-litres Storage Tank, Filter Change Alarm, 3-Years Free Service AMC

This Kent water purifier utilizes Kent’s patented Mineral RO purification technology to the fullest.

It’s suitable for all kinds of purification with its TDS controller, be it municipal tap, or borewell water. Providing 100% safe water by getting rid of even the finest impurities, such as chemicals, bacteria, viruses, and salts.

Kent Excell Plus undersink water purifier

The 7-litres storage of the hydrostatic tank is also top of the line. Whereas the purification capacity is 15 litres/hours. All the while utilizing Kent’s ‘double-purification’ of RO/UF + UV.

Kent Excell Plus purifies the input water in 4 different stages to give you clean and safe drinking water.

  1. Sediment Filter
  2. Activated Carbon Filter
  3. RO or UF (depending upon how the TDS controller is set)
  4. UV Disinfection

This purifier also saves you from the headache of keeping track of when to change the various filters and membranes.

The automatic filter change alarm alerts you when filters and membranes are due for replacement. There is a separate alarm that goes off automatically whenever the system detects any fault in the UV lamp.

The Excell Plus features a large 7-litres storage tank and is therefore ideal for large families. But you must keep in mind that it needs a lot of space for installation.

Kent Excell Plus Needs More Space for Installation

When it comes to certifications. The Kent Excell Plus comes with world-class certifications from NSF International (United States), and CE. Guaranteeing trust from the public as well as the professionals.

Apart from under-the-counter installation, it can also be attached to water coolers and refrigerators with water dispensers.

Like all RO purifiers from Kent, this one too comes with a 1-year warranty and 3 years of free service AMC at zero cost. This offer will save you Rs. 3,000 directly.

Positive
  • 3 years of free service AMC worth Rs. 3,000
  • Sounds an alarm when membrane and filters need to be changed
  • A big storage tank of 7 litres
  • Alarm for UV-failure
  • Ideal for big families or homes with a higher requirement for purified water
Negatives
  • No pre-filter is provided
  • 100% of the water might not be RO purified (depending on the setting of the TDS controller)
  • The storage tank is given outside the purifier unit
  • Needs more space for installation

3

KENT Sterling Plus Under Sink RO Water Purifier

Compact Design, Suitable for Smaller Spaces

Another Kent addition, but this one incorporates a fresh design language.

Kent Sterling Plus

Unlike most under-sink RO purifiers, Kent Sterling Plus comes as a single unit. All the filters, membrane, and storage tank are kept inside the main unit.

The compact design makes it a great fit for smaller under-sink spaces. It is also comparatively much easier to install as compared to other under-sink purifiers that come with an external storage tank.

The intelligent design also makes it very easy to clean the area under the sink.

This model intelligently supports natural minerals even after very fine filtration. Making good use of Kent’s own patented Mineral RO tech. The TDS Controller retains essential natural minerals in purified water, giving you pure, safe, and natural-tasting water.

A lot of thought has gone into this under-the-counter water purifier, providing for side-by-side placement too, that may go right beside your refrigerators for utilizing the most space.

The patented technology helps with dishing out a tastier and sweeter end-product of fresh and safe water.

The double purification of RO/UF+UV manages to deal with any and all traces of Arsenic, Rust, and all other chemicals, bacteria, viruses, and even salts. 100% safely and purely filtered, and at the same time, nutritional too.

Kent Sterling Plus comes with a storage capacity of 6 litres and a high purification capacity of up to 15 litres/hour.

You get the standard 1-year warranty and 3 years of extended service with Kent Sterling Plus as well.

Positive
  • An additional 3 years service AMC package worth Rs. 3,000 is given free of cost
  • Comes as a single unit
  • If required, can be installed like a regular RO
  • Clean and compact design
  • Easy to install
  • Ideal for smaller under-sink spaces
Negatives
  • Does not come with an external pre-filter
  • 100% of the water might not be RO purified because of the limitation associated with the use of a TDS controller
  • No alerts for membrane and filter change

Conclusion

In conclusion, choosing the right under-sink water purifier is crucial for clean and safe drinking water. We reviewed three top options in India.

The AO Smith Z2+ excels in filtration performance, compact design, and digital display. The Kent Excell Plus comes with a large storage tank, TDS controller, and 3 years of free service. Kent Sterling Plus is the compact version of the Kent Excell Plus and comes with identical purification stages.

Consider your needs, family size, space constraints, and budget. Choose a reliable option that suits your requirements and read customer reviews for informed decision-making.

Like this information? Or have something to share? Connect with us on Facebook

Pramod

An engineering graduate from a top Indian university, boasts a decade-long expertise in reviewing home appliances, particularly water purifiers. As the Editor-in-Chief of BestROWaterPurifier.in, his insights empower readers with valuable advice for healthier choices in household essentials.

11 Comments
  1. Nowadays, homeowners prefer to install under-the-sink water purifiers due to the designs of modern kitchens. Thanks for suggesting the 3 best under-sink water purifiers available in India as it will help in making the right decision.

  2. I have sterling Kent ro and it’s been a nuisance since day one…. Thinking of getting rid of it now

  3. Extremely disappointed with Kent sterling water purifiers. Brought less than a year and replaced many parts with great difficulty, still giving a lot of problems. Please do not buy Kent products, they have very bad service.

  4. Pathetic after sales service

    • The same is my experience on Kent under sink. Horrible service and horrible staff. I spent 10000 rupees in on a year and the area sales manager says why you didn’t take AMC. Never buy Kent

  5. Kent sterling RO is giving problem every year . Only the first two years were problem free. And more than the purifier its the damn staff so non cooperative . Horrible after sales service. they are eager to sign AMC but give no service. sub standard service and product.

  6. Reply
    BIRINDER RASJIT KAUR August 15, 2019 at 2:30 pm

    Extremely troublesome Kent under the sink purifier. Every third month one or the other part needs replacement. Horrible experience. Getting it replaced.

  7. I share your experience and am thinking of replacing the Kent that I have. Convenient but every year since 2015 I’ve had a problem. I had this installed in 2013

  8. I have Kent RO under sink in 2016 but the product is always giving me trouble every few months. I have replaced each and everything over the period of 3 years except the body.
    I am not happy at all with this product. Imagine spending 2K -8K bucks in the year.

  9. Hi Dinesh, have u installed the device? Kindly write the review.

  10. Bought Kent Excell Plus last week after reading this article. I was looking for something like this because we have a very small kitchen and there was no space for installing the purifier on wall. We have now got it installed under the kitchen sink.

Leave a reply

Best RO Water Purifier
Logo
Register New Account
Compare items
  • Water Purifiers (0)
Compare