Best A. O. Smith Water Purifiers in India: Top Models for Every Budget and Water Source

The company’s current range includes affordable RO models, premium ProPlanet purifiers, under-counter systems, UV purifiers for low-TDS municipal water, and models with features such as Silver Charged Membrane Technology (SCMT), mineralizers, alkaline filtration and hot-water dispensing.

The best A. O. Smith water purifier depends primarily on your water source, TDS, required storage capacity, installation preference and budget.

Best A. O. Smith Water Purifiers at a Glance

1. A. O. Smith X9 – Best A. O. Smith Water Purifier Overall

Best for: Families wanting a premium RO purifier with mineral and alkaline features.

The A. O. Smith X9 is one of the strongest all-round choices in the current range. A. O. Smith describes the X9 as providing double protection through 100% RO and Silver Charged Membrane Technology.

The current X9 configuration also includes a copper-fortified mineralizer and alkaline technology. The manufacturer currently lists an MRP of around ₹21,000.

Key Features

• 100% RO purification
• Silver Charged Membrane Technology
• Copper-fortified mineralizer
• Alkaline technology
• Premium design
• Designed for demanding household water conditions

The X9 is particularly attractive if you want A. O. Smith’s SCMT platform together with mineral and alkaline functionality without moving into the ₹30,000+ ProPlanet hot-water models.

Best overall: A. O. Smith X9.

2. A. O. Smith X7+ – Best for High-TDS Water

Best for: Borewell, tanker and other high-TDS water sources.

The X7+ is an 8-stage RO purifier designed for water with TDS of up to 3,000 ppm, according to A. O. Smith’s current product listing. The manufacturer currently lists an MRP of ₹21,200.

Key Features

• 8-stage RO purification
• Suitable for water up to 3,000 ppm TDS according to manufacturer specifications
• Silver Charged Membrane Technology
• RO-based dissolved-solids reduction
• Designed for demanding water conditions

If your home receives borewell or tanker water and the TDS is high, the X7+ is one of the most logical A. O. Smith models to investigate.

Best for high TDS: A. O. Smith X7+.

3. A. O. Smith ProPlanet P4 Pro – Best Premium RO with UV LED in Tank

Best for: Buyers wanting a premium RO purifier with UV protection in the storage tank.

The ProPlanet P4 Pro is an 8-stage RO purifier with a UV LED in the tank. A. O. Smith currently lists it at ₹24,900 MRP.

Key Features

• 8-stage RO purification
• UV LED in tank
• Silver Charged Membrane Technology
• Premium ProPlanet design
• Water-saving-focused ProPlanet platform

The UV LED in the storage tank differentiates the P4 Pro from simpler RO configurations.

Best for: Buyers who want additional protection in the storage tank.

4. A. O. Smith ProPlanet P5 – Best for Large Families

Best for: Families that need more purified-water storage.

The ProPlanet P5 is an 8-stage RO purifier with a 10-litre storage capacity. A. O. Smith currently lists an MRP of ₹24,500.

Key Features

• 8-stage RO purification
• 10-litre storage
• Silver Charged Membrane Technology
• ProPlanet platform
• Designed for household use

The larger tank is useful for households with several members or situations where water demand is concentrated during particular parts of the day.

Best for large families: ProPlanet P5.

5. A. O. Smith ProPlanet P8 – Best Hot-Water Water Purifier

Best for: Buyers who want instant hot purified water.

The ProPlanet P8 combines an 8-stage RO purification system with hot-water dispensing. A. O. Smith currently lists it at ₹30,100 MRP.

Key Features

• 8-stage RO purification
• Hot-water dispensing
• ProPlanet water-saving platform
• Silver Charged Membrane Technology
• Premium construction

A. O. Smith specifically positions the P8 for demanding sources such as borewell, tanker and mixed water.

Best hot-water RO: ProPlanet P8.

6. A. O. Smith X6+ – Best Value Premium RO

Best for: Buyers who want A. O. Smith’s 100% RO and SCMT technology without paying for a flagship ProPlanet model.

The X6+ uses 100% RO + Silver Charged Membrane Technology. It also incorporates A. O. Smith’s Alkaline Min-TECH approach for mineral retention and alkaline water.

A. O. Smith currently lists the X6+ at approximately ₹19,000 MRP.

Key Features

• 100% RO
• SCMT
• Alkaline Min-TECH
• Mineral-related filtration
• Premium design

Best value premium: X6+.

7. A. O. Smith X3+ – Best Affordable A. O. Smith RO Purifier

Best for: Buyers who want an A. O. Smith RO purifier at a lower price.

The X3+ is a compact 6-stage RO purifier. A. O. Smith currently lists the model at approximately ₹15,300 MRP.

Key Features

• 6-stage RO purification
• Compact design
• Suitable for households needing RO purification
• Lower purchase price than ProPlanet models

It is a sensible choice when your main priority is RO purification rather than premium features.

Best affordable A. O. Smith RO: X3+.

8. A. O. Smith X3 – Best Budget A. O. Smith RO

Best for: Buyers looking for the lowest-cost entry into A. O. Smith’s RO range.

The X3 is a compact 6-stage RO purifier. A. O. Smith currently lists it at ₹13,000 MRP.

The X3 makes sense for buyers who want a straightforward RO purifier and do not need advanced features such as hot-water dispensing or under-counter installation.

Best budget choice: X3.

9. A. O. Smith Z2 Pro – Best Under-Counter A. O. Smith Water Purifier

Best for: Modern kitchens where you want the purifier hidden under the countertop.

The Z2 Pro is an under-counter RO purifier designed to keep the countertop uncluttered.

A. O. Smith currently lists the Z2 Pro at ₹27,100 MRP.

Advantages

• Under-counter installation
• Minimal countertop appearance
• 100% RO purification
• SCMT
• Premium design

It is a particularly good option for homeowners who are willing to pay more for a built-in-looking kitchen installation.

Best under-counter: Z2 Pro.

10. A. O. Smith X5+ Neo – Best Mid-Range Under-Counter RO

Best for: Buyers who want an under-counter purifier at a lower price than the Z2 Pro.

The X5+ Neo is an under-counter RO purifier featuring A. O. Smith’s MIN-TECH system. The current manufacturer listing gives an MRP of ₹22,800.

Key Features

• Under-counter installation
• RO purification
• MIN-TECH
• 6-stage purification
• Premium kitchen-friendly design

Best mid-range under-counter: X5+ Neo.

Best A. O. Smith UV Water Purifier for Low-TDS Municipal Water

Not every household needs RO.

A. O. Smith specifically lists its X2 Neo and X2 Neo+ UV purifiers for water with TDS below 200 ppm, particularly municipal water supplies.

The X2 Neo+ currently carries an MRP of around ₹12,600, while the X2 Neo is listed around ₹11,600.

If your municipal water has low TDS and you do not have a borewell or tanker supply, a UV purifier may be more appropriate than automatically buying an RO system.

A. O. Smith Water Purifier Comparison

Which A. O. Smith Water Purifier Is Best for Borewell Water?

Top choices: X7+, X9, ProPlanet P8 and ProPlanet P4 Pro.

Borewell water can contain elevated TDS, hardness, iron, fluoride, nitrate and other contaminants depending on the location.

RO is often the appropriate technology when dissolved solids are high, but the purifier should be selected according to actual water testing rather than simply assuming that all borewell water is the same.

The X7+ is particularly notable because A. O. Smith specifies it for water with up to 3,000 ppm TDS.

Which A. O. Smith Water Purifier Is Best for Tanker Water?

Top choices: X7+, X9 and ProPlanet P8.

Tanker water can vary considerably in TDS, hardness, sediment and microbiological quality.

RO is appropriate when dissolved contaminants need to be reduced. If the incoming water contains significant sediment, an external sediment prefilter can also be useful.

Which A. O. Smith Water Purifier Is Best for High-TDS Water?

Best choice: X7+ is particularly interesting because A. O. Smith specifies operation with water up to 3,000 ppm TDS.

Other RO models can also be suitable, but always check the exact model’s specified input-water limits.

Which A. O. Smith Water Purifier Is Best for Low-TDS Water?

If your water has low TDS, do not automatically choose RO.

A. O. Smith’s X2 Neo and X2 Neo+ are specifically positioned for low-TDS water below 200 ppm and municipal supplies.

A suitable UV purifier may therefore be a better choice where dissolved-solids reduction is unnecessary.

Which A. O. Smith Water Purifier Is Best for Hard Water?

Recommended: X7+, X9 or an appropriately rated ProPlanet RO model.

RO can reduce many dissolved minerals that contribute to drinking-water hardness.

However, a drinking-water purifier should not be confused with a whole-house water softener. If hard water is causing scale throughout your home, separate water-softening treatment may be required.

Which A. O. Smith Water Purifier Is Best for Salty Water?

Choose an appropriately rated RO model.

RO is the relevant purification technology when the primary problem is dissolved salts.

For extremely high-TDS or saline water, test the water and confirm the model’s maximum input-TDS specification before purchasing.

ProPlanet vs X Series: Which A. O. Smith Purifier Is Better?

Choose the X series if value and compact design are more important.

Choose ProPlanet if you want a premium purifier, water-saving features, larger storage or hot-water dispensing.

X9 vs X7+: Which Is Better?

The two models serve somewhat different priorities.

• X7+: Better suited to demanding/high-TDS water, with a specified input TDS capability of up to 3,000 ppm.
• X9: Better suited to buyers prioritizing mineralizer, copper and alkaline features.

If your main concern is high TDS, lean toward the X7+.

If your main concern is premium mineral and alkaline functionality, the X9 is more attractive.

ProPlanet P4 Pro vs ProPlanet P5

Choose the P4 Pro when the UV LED in-tank feature is important.

Choose the P5 when larger storage is the priority.

How to Choose the Best A. O. Smith Water Purifier

1. Test Your Water

Start with the water rather than the brand.

Check TDS and, when necessary, test for hardness, iron, fluoride, nitrate, arsenic, turbidity and microbiological contamination.

2. Identify Your Water Source

• Municipal water
• Borewell water
• Tanker water
• Mixed water
• Well water

3. Decide Whether You Need RO

RO is useful when dissolved solids or particular dissolved contaminants need to be reduced.

For low-TDS municipal water, UV may be more appropriate depending on the actual contamination risk.

4. Choose Storage Capacity

5. Consider Installation

A. O. Smith offers both conventional wall-mounted models and under-counter systems.

Choose an under-counter model such as the Z2 Pro or X5+ Neo when keeping the kitchen countertop uncluttered is important.

6. Compare Water Recovery

RO purification generates reject water. Compare the recovery specifications of the models you are considering and reuse reject water for suitable non-drinking purposes where practical.

7. Check Service Availability

Before purchasing a premium purifier, confirm that A. O. Smith service is available in your location and check the cost of replacement filters and annual maintenance.

A. O. Smith Water Purifiers: Pros and Cons

Pros

• Wide range of RO purifiers
• Premium build and design
• 100% RO options
• Silver Charged Membrane Technology on selected models
• Under-counter options
• UV purifiers for low-TDS water
• Large ProPlanet range
• Hot-water RO models
• 10-litre storage option
• High-TDS option such as X7+

Cons

• Premium models can be expensive
• Replacement filters can add to ownership cost
• RO is unnecessary for some low-TDS water supplies
• Large product lineup can make comparison confusing
• Under-counter installation requires suitable plumbing and cabinet space

Best A. O. Smith Water Purifier by Requirement

Final Verdict

A. O. Smith X9 is the best overall choice for many buyers who want a premium RO purifier with SCMT, mineralizer, copper and alkaline functionality.

A. O. Smith X7+ is the better choice when high TDS is the primary concern because the manufacturer specifies it for water up to 3,000 ppm TDS.

ProPlanet P4 Pro is a strong premium option if you want 8-stage RO purification and UV LED in the storage tank.

ProPlanet P5 is preferable for larger families because of its 10-litre storage capacity.

ProPlanet P8 is the standout choice if hot-water dispensing is important.

Z2 Pro is the best choice for buyers who want an under-counter installation, while X3/X3+ are better suited to buyers looking for a more affordable A. O. Smith RO purifier.

For low-TDS municipal water, however, an RO purifier may be unnecessary. A. O. Smith itself positions models such as the X2 Neo+ for low-TDS municipal supplies.

The most important rule is simple: choose the purifier according to your actual water quality, not simply according to the number of purification stages or the brand name.

Frequently Asked Questions

Which is the best A. O. Smith water purifier in India?

The X9 is one of the strongest overall options because it combines 100% RO, SCMT, copper-fortified mineralization and alkaline technology.

Which A. O. Smith purifier is best for high-TDS water?

The X7+ is particularly suitable because A. O. Smith specifies it for water with TDS up to 3,000 ppm.

Which A. O. Smith purifier is best for borewell water?

X7+, X9 and ProPlanet P8 are strong choices when borewell water requires RO purification. Always check the actual water quality and model specifications.

Which A. O. Smith purifier is best for tanker water?

X7+, X9 and ProPlanet P8 are good models to consider for tanker water when RO is required.

Which A. O. Smith purifier is best for municipal water?

If municipal water has low TDS, consider an A. O. Smith UV purifier such as the X2 Neo or X2 Neo+. If the municipal water has high TDS or other dissolved contaminants, an RO model may be more appropriate.

Is A. O. Smith good for hard water?

Yes. Appropriate A. O. Smith RO models can reduce many dissolved minerals associated with drinking-water hardness. Whole-house hard-water problems may still require a separate water softener.

Is A. O. Smith good for salty water?

RO is the appropriate technology for reducing dissolved salts. Select a model according to the actual TDS of your incoming water and its specified operating range.

Does A. O. Smith have under-counter water purifiers?

Yes. Models such as the Z2 Pro and X5+ Neo are designed for under-counter installation.

Which A. O. Smith purifier has hot water?

The ProPlanet P8, P6 and P7 are among the current A. O. Smith models offering hot-water functionality.

Which A. O. Smith purifier has the largest storage capacity?

The ProPlanet P5 is currently listed with 10-litre storage, making it one of the better choices for larger households.

Do I need RO if my water TDS is below 200?

Not necessarily. TDS alone does not determine overall water safety. A. O. Smith positions its X2 Neo and X2 Neo+ UV models for low-TDS municipal water, but the appropriate technology depends on the contaminants actually present.