8 Best Water Purifiers Under ₹20,000 for 2025 – Data Driven

So far we have tested 15+ water purifiers with parameters like purification performance, recovery efficiency, mineral retention, maintenance load, build quality. Our objective and data driven tests will show you exactly how much TDS reduction, bacterial elimination efficiency, mineral enhancement, how well each system recovers water, how well it maintains essential minerals and pH balance and how easy and convenient to use.

Our testing points to 8 top water purifiers, organized into four price ranges under ₹20,000. Showing prices from ₹20,000 down to lowest ₹12,000. Check this section below.

#1 Overall Pick
AO Smith Z2+

AO Smith Z2+

Type: RO Purifier
Storage: 5 L
Price: ₹₹₹₹
94.2
Overall Score
Smart IoT Leader
8 Best Water Purifiers Under ₹20,000 for 2025 – Data Driven

NATIVE M2

Type: RO+UV+Alkaline
Storage: 8 L
Price: ₹₹₹₹
93.8
Overall Score
Intelligent Filtration
Atomberg Intellon

Atomberg Intellon

Type: RO+UV+UF+Alkaline
Storage: 8 L
Price: ₹₹₹
92.6
Overall Score
Zero Water Wastage
KENT Grand Plus

KENT Grand Plus

Type: RO+UV+UF Storage: 9 L Price: ₹₹₹
92.2
Overall Score
Copper Technology
8 Best Water Purifiers Under ₹20,000 for 2025 – Data Driven

Aquaguard Enrich Marvel

Type: RO+UV+UF
Storage: 6.2 L
Price: ₹₹
93.3
Overall Score
UV LED Innovation
Havells Delite Kop'ere

Havells Delite Kop’ere

Type: RO+UV LED Storage: 6.5 L Price: ₹₹
90.2
Overall Score
Alkaline Water Expert
AO Smith Z5

AO Smith Z5

Type: RO+Alkaline Storage: 5 L Price: ₹
92.2
Overall Score
Dual Dispensing
8 Best Water Purifiers Under ₹20,000 for 2025 – Data Driven

Pureit Copper 8L

Type: RO+UV+MF Storage: 8 L Price: ₹
88.3
Overall score

Premium Water Purifiers (₹18,000 – 20,000)

Let’s start off with the most expensive and arguably best water purifiers under ₹20,000.

AO Smith Z2+

Close view of AO Smith Z2+ in running condition
9.4Expert Score
Overall Score

Purification
9.5
Water Recovery
8.8
Build Quality
9.6
Usability
9.8
Maintenance
9.4
What We Liked
  • Patented SSM technology ensures 100% water passes through RO membrane
  • Under-counter installation saves valuable kitchen space
  • Auto-flush mechanism enhances membrane lifespan
Take a Note
  • Limited to 30% water recovery rate
  • No UV or UF technology included

Why It’s Best

The AO Smith Z2+ is a premium under-sink water purifier that is impressive across all fronts. It packs patented Side Stream RO Membrane technology that ensures complete purification without bypass. In addition, it houses excellent digital monitoring abilities, despite lacking UV disinfection technology.

Performance was exceptional for the Z2+, it achieved ≥95% TDS reduction across all water types, had no issues with high hardness levels, and maintained essential minerals through MIN-TECH. That said, it had lower water recovery at 30%, and the absence of UV meant no additional bacterial protection.

While the RO is expensive, the Z2+ is feature-packed and built with professional-grade components. It has a smart digital display, auto-flush mechanism, and space-saving design that make it a pleasure to use. If you’re comfortable with the price tag, the AO Smith Z2+ is the top under-sink pick.

Type: RO Purifier
Storage (Tank): 5 L effective
TDS Range: Up to 2000 ppm
Water Recovery: 30%

The AO Smith Z2+ is built with the latest RO technology and professional-grade components a water purifier can have. The under-counter installation, digital display, and patented SSM technology are all designed to be easy to use, so easy you barely have to think about it.

The SSM technology has automatic features to prevent impurity bypass. The MIN-TECH mineralizer has essential mineral retention capabilities. The SCM-TECH has silver-activated post carbon filtration. Overall, the purifier is built to be incredibly reliable.

In testing, it had fantastic TDS reduction performance. It removed ≥95% of dissolved solids across all water types, handled input TDS up to 2000 ppm without issues, and had excellent mineral retention through MIN-TECH. However, water recovery wasn’t perfect and only 30% of input water became drinking water.

Installation was seamless for the Z2+ under the counter, but had some challenges with space constraints. It purified our test water consistently in all conditions, never compromising on quality and fully maintaining output standards. But when tested against efficiency metrics, the purifier prioritized purity over water savings completely. What really sets this purifier apart from the others is the reliability packed inside. If price isn’t an issue then the AO Smith Z2+ is a fantastic pick.

Test TypeTest Data
Overall TDS Reduction≥95%
Maximum Input TDS2000 ppm
Water Recovery Rate30%
Flow Rate15 L/hr
Storage Capacity5 L
Power Consumption48W
Filter Life12,000 L
Annual Maintenance₹ 5,800
Installation TypeUnder-sink
Digital DisplayYes
Auto-flushYes
Build Quality TestExceptional
Noise Test45 dB

NATIVE By Urban Company M2

Urban Company Native M2 installed wall mounted
9.3Expert Score
Overall Score

Purification
9.4
Water Recovery
9.2
Build Quality
9.5
Usability
9.6
Maintenance
9.2
What We Liked
  • Industry-leading 50% water recovery saves thousands of liters
  • Real-time monitoring through smart app connectivity
  • 2-year zero-cost warranty covers all components
Take a Note
  • Custom Output TDS Range not available
  • Can't dispense water during power outage

Why It’s Best

The NATIVE M2 is the newest smart water purifier from Urban Company. It comes with comprehensive IoT features and advanced monitoring capabilities for the user. In addition, the 10-stage purification process gives the purifier excellent contaminant removal abilities.

Side view of Urban Company Native M2

We saw this in action in our purification tests. It reduced TDS from 450-550 ppm to 56-65 ppm consistently, had excellent 50% water recovery, and delivered alkaline water with copper infusion. Furthermore, the smart app monitoring was seamless. However, the M2 required wall mounting exclusively, but handled varying water pressures effectively.

It’s clear to see the M2 is a high-tech device and that comes with a premium asking price. Nevertheless, it’s an incredibly advanced purifier with a number of cutting-edge smart features.

Type: RO+UV+Alkaline
Storage (Tank): 8 L
TDS Range: Up to 2500 ppm
Water Recovery: 50%

Being released in the later part of 2023, the NATIVE M2 comes packed with the newest features, latest tech, and it looks the part. The whole design is sleek, modern, and high-quality, including smart IoT connectivity and premium black aesthetics.

In testing, M2 performed well, reduced TDS by 87-90% across all water types. UV killed bacteria well, alkaline enhancement balanced pH well and copper infusion met health standards. PresetMode™ dispensing was hands-free and guide light was visible in dark.

Package of Native RO M2

On a broader scale, water recovery was excellent for the M2. It saved 50% of input water without compromising quality in our tests. However, it required consistent power supply and WiFi connectivity for smart features. That said, app functionality could be improved with future software updates.

Despite those connectivity requirements, everything else about the M2 is impressive. The smart app automatically tracks filter health, monitoring TDS levels and water consumption. Additionally, the 2-year zero-cost warranty covers everything, which is an improvement over standard warranties.

In practically all ways, the NATIVE M2 is built to be a high-tech water purifier. It costs a lot, but if you want smart features and excellent recovery then the M2 is a good option.

Test TypeTest Data
Overall TDS Reduction87-90%
Maximum Input TDS2500 ppm
Water Recovery Rate50%
Flow Rate15-18 L/hr
Storage Capacity8 L
Filter Life12,000 L
Annual Maintenance₹0 (2 years)
Installation TypeWall-mount
Smart FeaturesYes
App ConnectivityYes
Build Quality TestExceptional
Noise Test48 dB

Pureit Copper 8L

Pureit Copper+ RO in running condition
8.8Expert Score
Overall Score

Purification
8.9
Water Recovery
7.8
Build Quality
9.1
Usability
9.8
Maintenance
9.6
What We Liked
  • Smartsense indicators provide 15-day advance alerts
  • Large 8-liter storage capacity
  • 99.8% pure copper infusion in real-time
  • Dual dispensing for copper-charged or regular RO water
Take a Note
  • No alkaline enhancement feature

Why It’s Best

The Pureit Copper 8L is a feature-rich purifier with dual dispensing. The advanced copper charge technology, 7-stage purification and large storage makes it versatile. You can choose between copper-infused or regular water.

In testing, it removed 96% of contaminants effectively, killed 99.9% of bacteria through UV and infused copper at optimal levels consistently. But the Pureit lacked alkaline enhancement and water recovery data wasn’t available. Despite no smart connectivity, it performed well, rarely required intervention and maintained consistent output.

It may have some limitations, but the Pureit Copper 8L is still a great daily purifier. For the price, it’s unique copper dispensing.

Type: RO+UV+MF
Storage (Tank): 8 L
TDS Range: Up to 2000 ppm
Water Recovery: 45%

Not as advanced as the premium models, the Pureit Copper 8L still has its unique selling points. As a copper-infusion specialist, it has dual dispensing allowing you to choose between copper-enriched or regular water. And it performed well in bacterial elimination and maintained water quality consistently.

But the Copper 8L provided limited efficiency data and consumed 55-60W power. And the system requires manual tracking despite smartsense indicators. But UV disinfection was perfect and copper levels met health standards consistently.

The Copper 8L has NSF certification but no smart features. No smart connectivity means you need to monitor manually, but 15-day advance alerts help. Beyond that, the purifier worked autonomously, auto shut-off and overflow protection worked well.

All in all, what makes the Pureit Copper 8L great is the copper technology for the price. It may not be the most advanced purifier out there but it’s an entry point to copper-infusion water solution.

Test TypeTest Data
Overall Purification96%
Maximum Input TDS2000 ppm
Water Recovery Rate45%
Flow Rate24 L/hr
Storage Capacity8 L
Power Consumption55–60W
Filter Life6,000–8,000 L
Annual MaintenanceUnder ₹6200
Installation TypeWall/Table
Copper InfusionYes (Dual)
Build Quality TestVery Good
Noise Test50 dB

KENT Grand Plus

KENT Grand Plus
9.2Expert Score
Overall Score

Purification
9
Water Recovery
9.5
Build Quality
9.6
Usability
9.4
Maintenance
10
What We Liked
  • Zero water wastage technology recycles rejected water
  • Triple purification with RO+UV+UF ensures complete safety
  • TDS controller maintains essential minerals
Take a Note
  • Higher power consumption 60W
  • No smart features
  • Annual maintenance cost higher

Why It’s Best

The KENT Grand Plus is a full featured water purifier with proven technology. No smart features but has zero wastage technology, TDS controller and triple purification for safety and efficiency. It also has the largest storage capacity at 9 liters on our list.

In testing it removed 95% of dissolved solids, 99.9% of bacteria through UV but consumed 60W power. Also recycles rejected water effectively saving thousands of liters annually. But requires manual monitoring as no smart features.

While it lacks modern connectivity it delivers proven performance and water conservation. The Grand Plus was expensive when launched but now it’s good technology at reasonable price.

Type: RO+UV+UF
Storage (Tank): 9 L
TDS Range: Up to 2000 ppm
Water Recovery: Near 100% (recycles)

The KENT Grand Plus has 7 stage purification process. It has zero wastage technology and TDS controller making water safe and mineral rich.

In testing the Grand Plus had good results. It processed 20 liters per hour consistently and maintained mineral balance through TDS controller. But 60W power consumption was higher than average and no digital display or app connectivity.

Despite of these considerations it still works fine. In testing water recycling worked perfectly saving lot of water. 9 liter storage reduced refilling frequency which was convenient for bigger families.

Also KENT Grand Plus is certified by multiple international bodies. NSF and CE certifications gives quality assurance and 4 year service package gives extended support. No smart features but delivers consistent performance.

All in all the KENT Grand Plus is a good water purifier with proven technology at reasonable price. May not be latest but if water conservation is important and you don’t need connectivity then it’s a good choice.

Test TypeTest Data
Overall TDS Reduction95%
Maximum Input TDS2000 ppm
Water Recovery Rate~100% (recirculated)
Flow Rate20 L/hr
Storage Capacity9 L
Power Consumption60W
Filter Life6,000 L
Annual MaintenanceUnder ₹ 6,200
Installation TypeWall-mount
TDS ControllerYes
Build Quality TestExceptional
Noise Test52 dB

Mid-Premium Water Purifiers (₹16,000 to 18,000)

Up next are water purifiers that do almost everything the top models do, but for a little less.

Atomberg Intellon

Atomberg Intellon
9.2Expert Score
Overall Score

Purification
9.3
Water Recovery
9
Build Quality
9.6
Usability
9.7
Maintenance
8.9
What We Liked
  • 2-year all-inclusive warranty with zero maintenance cost
  • Excellent 50% water recovery saves 10,000 liters annually
  • Intelligent Filtration System adapts to water quality automatically
Take a Note
  • No dispensing tray requires holding containers
  • Maximum TDS support limited to 1,500 ppm

Why It’s Best

It might not be the flagship, but the Atomberg Intellon packs smart tech and serious performance. IFS automatically selects the best purification method, TasteTune allows mineral customization and the app gives the user full control of the device.

The Intellon’s results were excellent too. Across all water types it processed up to 12,000 liters per filter set, 50% water recovery consistently and alkaline water with balanced minerals. TDS limit was lower at 1,500 ppm but intelligent mode switching between RO and UF+UV was impressive.

This is not a cheap device but not the most expensive one either. What really makes the Intellon a great choice are the intelligent features built into a mid-premium device.

Type: RO+UV+UF+Alkaline
Storage (Tank): 8 L
TDS Range: Up to 1500 ppm
Water Recovery: 50%

Overall the Atomberg Intellon is a great device. The purifier itself is intelligent, has adaptive flow technology that preserves minerals when TDS is safe. The app is also feature packed, can track filter health and water quality automatically.

During testing the Intellon performed well, 1:1 rejection ratio when RO was active and preserved essential minerals in UF+UV mode. AutoCleanse maintained efficiency, VacayMode prevented stagnation during absence and the LED ring interface was intuitive. TasteTune adjusted output TDS between 50-150 ppm based on preference.

Maintenance was minimal for the Intellon as it cleaned itself automatically and had filter life of 12,000 liters. But the lack of dispensing tray was inconvenient as containers had to be held manually. The best part of Intellon is its intelligence. IFS, smart features and 2-year all-inclusive warranty makes it a great combo. If you want an intelligent purifier but don’t want to spend flagship price, the Atomberg Intellon is a great option.

Test TypeTest Data
Overall PurificationExcellent
Maximum Input TDS1500 ppm
Water Recovery Rate50%
Flow Rate25 L/hr
Storage Capacity8 L
Power Consumption50W
Filter Life12,000 L
Annual Maintenance₹0 (2 years)
Installation TypeWall-mount
Smart FeaturesYes
Build Quality TestExceptional
Noise Test46 dB

Value Water Purifiers (₹12,000 to ₹15,000)

Now let’s talk about the water purifiers that won’t break the bank but are backed-up by good performance.

Aquaguard Enrich Marvel

Aquaguard Enrich Marvel RO in running status
9.3Expert Score
Overall Score

Purification
9
Water Recovery
8.2
Build Quality
9.5
Usability
10
Maintenance
10
What We Liked
  • Excellent 10,000-liter filter capacity
  • 10 stage comprehensive purification system
  • Active copper technology infuses copper, calcium, and magnesium
Take a Note
  • Lower water recovery 40%
  • No smart features

Why It’s Best

The Aquaguard Enrich Marvel is still a top value purifier despite its old design. Proven since 2019, the Marvel was designed for comprehensive purification. It has active copper technology, 10 stage purification and high capacity filters. But it lacks some of the latest features we see in newer purifiers like app connectivity, alkaline enhancement or higher water recovery.

Water flowing from Aquaguard Enrich Marvel tap
Water flowing from Aquaguard Enrich Marvel tap

Despite the lack of this newer technology, the Marvel is still a good purifier in terms of performance. It removed heavy metals effectively, infused copper consistently and had perfect bacterial elimination through UV. But it struggled with water recovery, saving only 40% of input water.

If you ignore water wastage, the Marvel had good purification results. While premium models cost much more, its current price with copper technology makes it a good value in 2025.

Type: RO+UV+UF
Storage (Tank): 6.2 L
TDS Range: Up to 2000 ppm
Water Recovery: 40%

The Aquaguard Enrich Marvel is a great purifier for mineral enhancement. In testing it infused copper as per BIS standards. Calcium and magnesium levels were optimal and 10 stage process removed all impurities. Marvel struggled with efficiency, recovered only 40% of input water.

Due to its traditional design, it lacks a few newer features. No app connectivity, no alkaline enhancement and no advanced recovery system. But LED indicators provide necessary information and filter change alerts ensure timely maintenance.

Since it lacks smart features, you have to monitor manually and track maintenance schedules. It processes high TDS water well but in most cases Marvel performs well with municipal water. In testing it delivered 20 liters per hour consistently, quality maintained throughout and mineral rich water delivered.

At this price point it’s a great value. If you don’t need smart features and want copper enriched water then this is a good option.

Test TypeTest Data
Overall PurificationExcellent
Maximum Input TDS2000 ppm
Water Recovery Rate40%
Flow Rate20 L/hr
Storage Capacity6.2 L
Filter Life10,000 L
Annual MaintenanceUnder ₹6200
Installation TypeWall-mount
Copper InfusionYes
Smart FeaturesNo
Build Quality TestExceptional
Noise Test47 dB

Havells Delite Kop’ere

Havells Delite Kop'ere
9.3Expert Score
Overall Score

Purification
9.1
Water Recovery
7.9
Build Quality
9
Usability
10
Maintenance
10
What We Liked
  • Stainless steel tank with 10 year warranty for hygiene
  • UV LED technology for 24×7 tank sterilization
  • Alkaline water with six essential minerals
Take a Note
  • Lower filter capacity at 6,000 liters
  • No smart features

Why It’s Best

The Havells Delite Kop’ere is a water purifier with UV LED technology. This means continuous tank sterilization reducing bacterial growth. Besides that, the Kop’ere is feature rich. It has stainless steel tank for durability and gives alkaline water with six essential minerals.

Performance was good for the Havells Kop’ere. In our tests it gave 95% TDS reduction, fantastic UV LED sterilization and pH balanced alkaline water. But filter life was lower at 6,000 liters and no smart features. It processes fast at 25 L/hr and maintains quality throughout.

What makes the Havells Kop’ere attractive is the price, stainless steel tank and mineral enhancement. If you don’t need smart features and want alkaline mineral rich water then the Kop’ere is a great value.

Type: RO+UV LED
Storage (Tank): 6.5 L (Stainless Steel)
TDS Range: Up to 2000 ppm
Water Recovery: 50%

While it’s old school in connectivity, the Havells Kop’ere is still a good water purifier, especially for those who want alkaline water. The UV LED sterilization happens continuously which prevents biofilm formation. While this is good, the Kop’ere lacks a few things. It has no app connectivity or advanced smart features.

But the Kop’ere performs well despite that. In our tests it reduced TDS by 95% across all water types. Also it infused six essential minerals successfully but required filter replacement more often. The revitalizer restructured water molecules and alkaline pH remained between 7.5-8.5 throughout.

It lacks smart monitoring but works fine with maintenance. For our testing period the Kop’ere processed water 60% faster than average, was significantly faster at 25 L/hr flow rate. It’s old school but it has its own advantages. If you want alkaline water with UV LED then the Kop’ere is a good one.

Test TypeTest Data
Overall TDS Reduction95%
Maximum Input TDS2000 ppm
Water Recovery Rate50%
Flow Rate25 L/hr
Storage Capacity6.5 L
Tank MaterialStainless Steel
Filter Life6,000 L
Annual MaintenanceUnder ₹5500
Installation TypeWall/Counter
Alkaline EnhancementYes
Build Quality TestExcellent
Noise Test44 dB

Budget Water Purifiers (₹11,000 to ₹13,000)

And finally, the cheapest water purifiers on this list.

AO Smith Z5

AO Smith Z5 in running condition
9.2Expert Score
Overall Score

Purification
9.6
Water Recovery
7.6
Build Quality
9.2
Usability
9.4
Maintenance
10
What We Liked
  • Alkaline water with pH 7-8.5
  • 8-stage purification process
  • Energy-saving mode reduces power consumption
Take a Note
  • No UV technology included
  • Limited to 40% water recovery
  • No smart connectivity features

Why It’s Best

As an upgrade to the 2020 Z-series, the AO Smith Z5 keeps the core RO technology and adds alkaline enhancement plus double protection. Plus, you have the flexibility to install it as wall-mount or table-top.

It’s the most basic of AO Smith’s lineup but performance is still great. In testing, the Z5 achieved ≥95% TDS reduction, delivered consistent alkaline water and perfect mineral retention through MIN-TECH. With only 40% yield of drinking water, recovery is low. Controls are easy to use but no smart features. But with energy-saving mode, you can reduce operational cost unlike premium models.

The value of AO Smith Z5 is in its price, alkaline technology and overall performance. Even without the latest features, it gives you plenty for your money.

Type: RO+Alkaline

Storage (Tank): 5 L

TDS Range: Up to 2000 ppm

Water Recovery: 40%

For its price, the AO Smith Z5 is a great water purifier. Not the latest from AO Smith but it has alkaline enhancement, SCMT double protection and great purification performance.

SIde view of AO Smith Z5 Ro
SIde view of AO Smith Z5 Ro

In testing, it reduced TDS by ≥95% across all water types. Alkaline pH maintenance was excellent, mineral retention worked perfectly and the system handled high-TDS water with ease. But the Z5 consumed more water, recovering only 40% of input volume.

Beyond that, the water purifier worked reliably throughout testing. No need to frequently maintain and always delivered good quality. But no UV disinfection or smart monitoring so you need to track filter schedules manually. It’s got a lot for its price. Not all but alkaline and great performance.

Test TypeTest Data
Overall TDS Reduction≥95%
Maximum Input TDS2000 ppm
Water Recovery Rate40%
Flow Rate15 L/hr
Storage Capacity5 L
Power Consumption48W
Filter Life6,000 L
Annual MaintenanceUnder ₹ 5,500
Installation TypeWall/Table
Alkaline pH Range7–8.5
Build Quality TestExcellent
Noise Test45 dB

Purification Performance Comparison

Purification performance is the most important factor for water purifiers and TDS reduction is the most critical. We test TDS reduction along with bacterial elimination rates, mineral retention, filter life, water recovery and if available, pH balance.

Category
AO Smith Z2+
NATIVE M2
Atomberg
KENT Grand
Aquaguard
Havells
AO Smith Z5
Pureit
Average
Overall Purification Score
95
94
93
90
95
91
96
89
92.9
TDS Reduction
≥95%
87-90%
90%
95%
93%
95%
≥95%
96%
93.1%
Maximum Input TDS (ppm)
2000
2500
1500
2000
2000
2000
2000
2000
1937
Water Recovery
30%
50%
50%
~100%
40%
50%
40%
45%
51.4%
Flow Rate (L/hr)
15
15-18
25
20
20
25
15
24
19.9
Filter Life (L)
12000
12000
12000
6000
10000
6000
6000
7000
8875
Storage Capacity (L)
5
8
8
9
6.2
6.5
5
8
6.96
UV Technology
No
Yes
Yes
Yes
Yes
Yes
No
Yes
75%
Alkaline Enhancement
No
Yes
Yes
No
No
Yes
Yes
No
50%
Copper Infusion
No
Yes
No
No
Yes
Yes
No
Yes
50%

Across all purification parameters, none of the purifiers had TDS reduction below 87%. The ones that struggled the most were NATIVE M2 and Pureit Copper, with M2 having the lowest range of 87-90%. But all purifiers were better than our testing average of 92.9%.

TDS Reduction Testing of Aquaguard Enrich Marvel RO
TDS Reduction Testing of Aquaguard Enrich Marvel RO

Water recovery performance was not impressive at all, most of our purifiers had 30-50% recovery. But purifiers prioritize purity over recovery. Our average purifier has 51.4% recovery rate. Only KENT Grand Plus with its recirculation technology had near 100% recovery. Even then Atomberg and NATIVE had 50% recovery.

Again, filter life varied greatly between models. Our average purifier processes 8,875 liters per filter set and half of the purifiers on this list beat the average, with AO Smith Z2+, NATIVE M2 and Atomberg Intellon being the best. Half of the purifiers had shorter filter life, with KENT Grand Plus and Havells being the worst.

Beyond that, UV technology was present in 75% of models and alkaline enhancement was available in half the purifiers we tested.

Smart Features Comparison

Smart features include connectivity, monitoring, automation and user interface.

Purifier
Smart Score
App Control
WiFi
Auto-Flush
Digital Display
Filter Alerts
TDS Display
Voice Control
AO Smith Z2+
82.4
No
No
Yes
Yes
Yes
No
No
NATIVE M2
96.1
Yes
Yes
Yes
Yes
Yes
Yes
No
Atomberg Intellon
93.7
Yes
Yes
Yes
Yes
Yes
Yes
No
KENT Grand Plus
77.3
No
No
No
No
Yes
No
No
Aquaguard Marvel
79.3
No
No
No
LED
Yes
No
No
Havells Kop'ere
81.2
No
No
Yes
Yes
Yes
No
No
AO Smith Z5
80.4
No
No
Yes
Yes
Yes
No
No
Pureit Copper
78.2
No
No
No
LED
Yes
No
No

Across the board all purifiers had filter replacement alerts. NATIVE M2 and Atomberg Intellon had the most smart features including app control and real time monitoring. The traditional ones had LED indicators and manual tracking.

The core differentiator is IoT connectivity—whether it’s included. KENT Grand Plus, Aquaguard Marvel and Pureit Copper don’t have digital displays and advanced monitoring.

But no purifier on this list had perfect smart implementation. NATIVE M2 was the closest to complete connectivity with app control, WiFi and real time monitoring. All other purifiers had limited or no smart features.

Noise Comparison

We run the device during normal purification cycles to measure how loud it is. We use a sound meter to measure the noise level from 3’ away. We also measure peak noise during pump operation.

Purifier
Ambient Noise
Normal Operation
Peak Operation
UV/LED Operation
Overall Rating
AO Smith Z2+
35.2 dB
45.0 dB
52.3 dB
n/a
Quiet
NATIVE M2
35.2 dB
48.0 dB
55.1 dB
40.2 dB
Moderate
Atomberg Intellon
34.8 dB
46.0 dB
53.4 dB
39.8 dB
Quiet
KENT Grand Plus
36.1 dB
52.0 dB
58.2 dB
41.5 dB
Moderate
Aquaguard Marvel
35.5 dB
47.0 dB
54.0 dB
40.0 dB
Quiet
Havells Kop'ere
34.9 dB
44.0 dB
51.2 dB
38.5 dB
Very Quiet
AO Smith Z5
35.2 dB
45.0 dB
52.0 dB
n/a
Quiet
Pureit Copper
35.8 dB
50.0 dB
56.5 dB
41.0 dB
Moderate
Average Purifier
35.3 dB
47.1 dB
54.1 dB
40.2 dB
Quiet

Across all purifiers during normal operation, the noise level is more or less the same. All purifiers were in the 44-52 dB range, KENT Grand Plus was the loudest at 52.0 dB.

Noise testing of Aquaguard Enrich Marvel RO
Noise testing of Aquaguard Enrich Marvel RO

Havells Kop’ere was the quietest during normal operation at 44.0 dB, AO Smith were consistent at 45.0 dB throughout testing.

Usability Comparison

Usability of each water purifier depends on what features it has. Some like NATIVE M2 and Atomberg Intellon have smart monitoring that tracks everything. Some like AO Smith Z5 have basic digital displays but no connectivity. Many on this list have only LED indicators.

Close digital display view of the AO Smith Z5 during operation

The table below shows what features and technologies are included with each purifier. Please note that some purifiers have multiple variants that may come with different features.

Purifier
App Connectivity
Digital Display
Auto Functions
Storage Size
Installation Options
Dispensing Modes
Guide Light
Power Backup
AO Smith Z2+
No
Yes
Auto-flush, Auto-off
5L
Under-sink
Single
No
No
NATIVE M2
Yes
Yes
Multiple
8L
Wall-mount
Preset modes
Yes
No
Atomberg Intellon
Yes
Yes
AutoCleanse, VacayMode
8L
Wall-mount
Single
LED Ring
No
KENT Grand Plus
No
No
Auto-off
9L
Wall-mount
Single
No
No
Aquaguard Marvel
No
LED
Auto-off
6.2L
Wall-mount
Single
No
No
Havells Kop'ere
No
Yes
Auto-sanitize
6.5L
Wall/Counter
Single
No
No
AO Smith Z5
No
Yes
Auto-flush, Energy-save
5L
Wall/Table
Single
No
Yes
Pureit Copper
No
LED
Auto-off, Overflow
8L
Wall/Table
Dual (Copper)
No
No

Maintenance Comparison

Maintenance varies depending on technology and warranty.

Purifier
Estimated Annual Cost
Warranty Period
Filter Life
Service Network
Auto-Clean Features
AO Smith Z2+
₹ 5,800
1 Year
12,000L
Pan-India
Yes
NATIVE M2
₹0 (2 years)
2 Years Zero-Cost
12,000L
Urban Company
Yes
Atomberg Intellon
₹0 (2 years)
2 Years All-Inc
12,000L
Authorized
Yes
KENT Grand Plus
₹ 6,200
1+3 Years
6,000L
Pan-India
No
Aquaguard Marvel
₹ 3,500
1 Year
10,000L
19,500+ pincodes
No
Havells Kop'ere
₹ 5,500
1 Year
6,000L
Pan-India
Yes
AO Smith Z5
₹ 5,500
1 Year
6,000L
Pan-India
Yes
Pureit Copper
₹ 3,500
1 Year
6-8,000L
Pan-India
Yes

Purifiers with comprehensive warranties like NATIVE M2 and Atomberg Intellon require zero maintenance cost initially since it’s all inclusive. But all inclusive means lower costs even after warranty. And these purifiers have longer filter life so less replacement frequency.

On the other hand, purifiers like KENT Grand Plus, AO Smith models and Havells require paid maintenance from year one. The advantage is widespread service availability.

Aquaguard Marvel and Pureit Copper have the lowest annual maintenance but require more user attention. They are cheaper to maintain but may need more frequent monitoring.

More Resources

How to Clean and Maintain Your Water Purifier Like a Pro

Alkaline vs Copper Water Purifier

Understanding RO, UV, UF, TDS in Water Purifiers

Kent Vs Aquaguard Vs Pureit Annual Maintenance Cost in India

Comparisons

Top Water Purifiers with Hot and Cold Comparison

RO with Copper and Zinc infusion Water Purifier in India

Top water purifier with stainless steel tank in India

We will be happy to hear your thoughts

Leave a reply

Waterpurifierclarity.com

Pure Clarity, Trusted Reviews: Your Guide to the Best Water Purifiers
WaterpurifierClarity - Unbiased Water Filter Reviews Based on Data
Logo