5 Best Under Sink Water Purifiers in India - Mishry (2023)
Best Under Sink Water Purifiers in India

5 Best Under Sink Water Purifiers in India : Reviews & Buying Guide (2024)

Are you looking for the best under sink water purifier India? This article gives you detailed information about the best purifiers.

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Water purifiers have become an integral part of every Indian household, thanks to the growing level of pollution in drinking water. Though wall-mounted water purifiers or table-top purifiers are very common in Indian houses, these are not suitable for modular kitchens. An under sink water purifier or under-the-counter water purifier is similar to the normal RO purifiers but can be installed under the sink counter instead of wall mounting.

They are designed to be installed with built-in sinks in modern kitchens to hide the purifier and keep the kitchen interiors minimalist. This article will have a close look at the best under sink RO in India.

Summary Table: Best Under Sink Water Purifiers in India

To buy the water purifier can be a task. Here is the table from which you can get information regarding best under counter water purifier in India.

Product Name Buy On Amazon Buy On Flipkart Buy On Vijay Sales  Buy On Croma 
Kent Sterling Plus Check price here Check price here  Check price here  Check price here 
AO Smith Water Purifier Check price here Check price here  Check price here  Check price here 
Kent RO Excel Plus Check price here 
Aquaguard Hot And Cold Check price here  Check price here 
Faber UTS RO Water Purifier

Top Under Sink Water Purifier Brands in India

Let us now have a look at the best undersink water filter system in India.

1. Kent Sterling Plus 

When it comes to the top water purifier in India, Kent is one of the most trusted brands. It offers the best warranty compared to other brands ensuring your happiness.

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*Based on Mishry's internal reviews and ratings

The Kent Sterling Plus uses double purification of RO=UV/UF along with sediment and activated carbon filters to provide your family with 100% safe and healthy water. It has a compact design, letting you utilize the space in your kitchen in an efficient manner.

Kent sterling plus ro
Kent sterling plus ro

Product Features

  • It comes with 6L inbuilt hydrostatic storage space that makes a continuous supply of water even in the absence of electricity.
  • The filter cartridges include sediment, activated carbon, UF, and post-carbon filter.
  • The power consumption of the water purifier is 60 watts, while that of the UV lamp is 11 watts.
  • It has a purification capacity of 20liters/hour.
  • It comes with a mineral RO technology that retains the essential minerals of the water.
  • The body is constructed with ABS food-grade technology that ensures durability.
  • Kent Sterling Plus comes with a 1-year warranty and four years of free service.
  • It has a white and blue color.

2. AO Smith Z series Z2 5 liters water purifier

AO Smith has introduced a great range of the best RO system for home that comes with its unique hot water option. If you are residing in an area where the water has a high TDS level, this is the one for you.

AO smith ro
AO smith ro

Product Features

  • It has five levels of purification- pre-filter, sediment-filter, pre-carbon filter, RO membrane, and silver activated post carbon filter.
  • It has a storage capacity of 5liters.
  • Power consumption is 48watts.
  • It offers a warranty of 2 years.

The AO Smith water purifier reviews are also great.

3. Kent RO Excel Plus

It uses Kent’s patent RO technology to the fullest. It is suitable for all kinds of purification, with its TDS controller providing 100% safe water. This can be considered as an option for best under sink water filter as well.

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Kent excell plus ro
Kent excell plus ro

Product Features

  • It has a 7-liter storage capacity.
  • It has a purification capacity of 15liters/hour.
  • It uses Kent’s RO+UV/UF technology.

4. Aquaguard Hot and Cold water purifier

This is the best for people who want both hot and cold purified water.

Aquaguard ro
Aquaguard ro

Product Features

  • It is suited for places having a high content of TDS.
  • It has different outlets for hot and cold water.
  • It destroys harmful bacteria like E. Coli, Salmonella, and Hepatitis, thereby ensuring safe drinking water.
  • It has an extra level of protection with Biocote.

Aquaguard Hot and Cold RO+UV, therefore, is one of the best water filters for the home.

5. Faber UTS RO water purifier

Invisible yet amazingly effective, Faber’s under the sink water purifier can be mounted both under the sink and on the wall.

Faber ro
Faber ro

Product Features

  • It has a water storage capacity of 9 liters.
  • It has 5+1 stages of purification.
  • It has a TDS filtration of up to 2500* ppm.
  • The water purifier has two sediment plus filters, RO membrane, pre-carbon, and post-carbon filters.
  • It comes with a chrome-plated goose-neck faucet.
  • It has a filter capacity of 12 LPH**

Faber sink, therefore, can be an excellent option for those who are looking for a great under sink purifier. Needless to say, the Faber water purifier is one of the best RO water purification devices in India.

A Tata kitchen sink and an under sink water purifier can transform your kitchen’s look in a minute.

You can compare the water purifiers mentioned above and pick the top RO water purifier for your place. You can choose the under sink water purifier based on your preference and budget.

Advantages of under sink water filter

  • It is important to find the best under sink ro in India for kitchens that have a space constraint since these are compact and are installed under the sink. These save a lot of wall space.
  • These also enhance the appearance of your kitchen as they are hidden under the sink.
  • Under the sink water filter comes with a faucet that is placed beside the tap on the sink. This is helpful since it prevents creating a mess in the kitchen. You can place the bottle or glass on the sink and wait for it to fill.
  • These are low on maintenance and thus cost-effective. Apart from the change of filters, these don’t need much maintenance.
  • The rate of purification in the case of under counter water purifier is high. Also, the speed of filling is relatively high. They can fill a bottle in less than a minute.
  • Best under sink water purifier India comes with more tank storage.

Disadvantages of under sink water filter

Under sink reverse osmosis is ideal for modern kitchens. These best under sink water purifiers in India, need power sockets under the sink, a faucet hole in your sink, and a drainpipe to get rid of the wastewater.

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Different Types Of Water Purifiers

Types of reverse osmosis under sink

Under sink water filters are mainly of two types- inline filters and regular filters.

1. Inline filters

These filters come with a single cartridge and are installed using the push fittings along with your regular water source. Even though the installation is a little difficult, the benefit is that you get to use your sink tap even when water flows through the purifier.

2. Regular filters

These filters require a separate or dedicated filter tap. A T- connector can be used to install the second tap for the filtered water.
You can choose any type you want but make sure that you buy the best under sink RO water purifier.

How the under sink water purifier in India works?

If you think that the working of an under sink water purifier seems complicated, you will be surprised to know that it uses the same mechanism as that of a normal water purifier. The only difference with a under sink water purifier is that it must be installed under the sink where people cannot see it.

These mostly work under the sink RO system, where water is made to pass through the RO membrane and then disinfected in the latter stage using a UV disinfectant column.

These also use sediment and activated carbon as pre and post-filters to remove coarse particles and bad taste from water.

These filters work like any other RO, UV, UF, RO+UV, water purifiers to provide you with safe, healthy, and pure water free from disinfectants and iron.

Related Reading:
RO Vs UV Vs UF: Which One Is The Best

Arrangements that you need to make before fitting a kitchen water purifier

Under the counter water purifiers require a separate faucet that needs to be installed on the sink or kitchen top. A hole has to be made for fitting the faucet in the preferred location. It is advised that you ask your technician to drill the hole before the installation. Otherwise, you will have to fit the faucet on your own.

Since these filters require a constant supply of running water, they should be fitted with a tap next to them. In the absence of a tap, you will have to ask your plumber to make a water supply by connecting it with the main tap on the sink.

Since this water filter runs on electricity, ensure that a power supply is present under the sink.

The area under the sink should be kept clean and hygienic.

Since it drains the wastewater, a proper drainage system is required.

Water Purifier Guide to Buy Best Under Sink Water Purifier 

Water purifier guide that you need to know before buying best under sink water purifier India.

1. Water pressure

Under sink water filter provides more pressure than conventional ones. Thus, a glass of water is filled in a minute!

2. Cartridge life

Every cartridge that is provided with water filters has a different life span. Some of them last for 6-8 months while others last for 3-5 years.

Hence, while buying a kitchen sink filter, make sure that it has a good cartridge life. Also, make it a point to change the filters from time to time if you do not want to compromise the quality of water.

3. Maintenance

Ensure that you buy an under sink water purifier that is easy to maintain, easy to clean, and easy to change filters.

4. Purification technology

Under the sink water filters use only UV, RO, UV+RO, UF technology along with sediment and carbon filters to purify water. Therefore, before you buy one, make sure that you know which one will be suitable for your home.

For this, you need to test the quality of water. If the water is hard with a high TDS level, go for an under sink water purifier India. However, if the water is hard and contains disease-causing germs and bacteria, then go for a RO+UV one.

5. Size

If your kitchen has a space constraint, make sure that you buy an under sink water filter India with a compact design.

6. Storage capacity

To ensure that you have ready availability of pure water at all times, which includes power cuts too, ensure that your filter has a capacity of 7-12 liters.

features of kent

7. Installation

Installation of a normal water purifier requires a power socket and a tap with a constant water supply.

8. TDS Controller/ Mineral booster

Make sure that you buy a normal water filter that comes with a TDS controller since these help in retaining the essential minerals in water, which are often removed during RO filtration. These also maintain the pH level of water, thus ensuring a good taste.

9. Type of faucet

Ensure that you buy a water filter with a gooseneck or swivel-shaped faucet that can be placed on the sink beside your tap. The swivel-shaped faucet makes sure that your water does not splash around.

10. Self-cleaning system

Ensure that you buy a filter with a self-cleaning system that can clean itself on its own without manual assistance.

11. Warranty and service

Buy a purifier that has a warranty on both electrical parts as well as offers good after-sales service.

12. Error alerts

Buy one of the best water filters with error alerts such as UV fail alarms, and filter change alarms. These will notify you when it is time to change the UV lamp and filters to ensure a safe drinking water supply.

13. Mode of operation

Buy an RO water purifier in India that comes with an auto shut-off feature that shuts off the water purifier when not in use for more than 10 minutes. Also, some features fill the tank automatically whenever the water level in the tank decreases.

Related Reading:
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Frequently Asked Questions

Here are a few exciting FAQs about under-sink water purifiers.

We listed these five under-sink water purifier brands, and their product model you can go for are – Kent Sterling Plus and AO Smith Water Purifier.

Under – sink water purifier mechanism is the same as the wall-mounted normal water purifier. The only difference is that it is installed under the sink where people cannot see it.

Depending upon the brand, every cartridge that is provided with a water filter has a different life span. It can last from 6 to 8 months. Some of which can even last longer for about 3 to 5 years.

It is safe to use under sink water purifiers. Some of the under sink water purifiers have outstanding features such as a self-cleaning system and auto shut off. These water purifiers are best suitable where the TDS levels are high. They have a high water storage capacity. The technology used in under-sink water purifiers is the same as the wall-mounted water purifiers: RO, UV, and UF.


Here we have presented the best under counter water purifier available in Indian market. These are all well-known brands in India reputed for their quality and performance. Before you buy, make sure you go through each water purifier’s features. This will help you to analyze and pick a trustworthy and best undersink water filter system.

You should also go for a water test first based on which you can decide which one you will like best. All these filters have an under sink RO system ensuring these provide water, which is bereft of harmful disease-causing germs.

Here are our top picks for Best Under The Sink RO: Kent Sterling Plus, AO Smith Water Purifier.

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