KENT vs Aquaguard RO Water Purifier (2026): Which Should You Buy in India?

Updated: 3 November 2026. Prices and ratings below were checked on Amazon.in and the official KENT and Eureka Forbes sites on that date.

Short answer: buy KENT if you want a bigger tank and simple, proven RO. The KENT Grand (8 litres, 20 litres per hour) at about ₹11,949 is our KENT value pick. Buy Aquaguard if you want the lowest upfront price or smarter features. The Aquaguard Sure Delight 2X costs about ₹9,499 and was the most bought of the six (10K+ in the past month), while the Ritz Pro adds a stainless-steel tank, live TDS display and a 2-year unconditional warranty.

Before you choose either brand, check your water. Eureka Forbes itself says RO suits hard, high-TDS water (borewell, tanker), while UV is enough for soft, low-TDS municipal water. Buying RO for already-soft water wastes water and money. With that in mind, here is how six current models compare.

Prices checked 3 Nov 2026 on Amazon.in (delivery PIN 500062). Prices change often, MRPs differ between Amazon and the brands' sites, and some Amazon ratings combine several variants. Ratings are not lab results.

First: do you even need RO?

TDS (total dissolved solids) is the amount of dissolved salts and minerals in water. High-TDS water from borewells or tankers tastes salty or hard and needs RO. Low-TDS municipal supply is often fine with UV or UV+UF. A cheap TDS meter or the free water test most brands offer at installation will tell you. Note that Aquaguard's longer filter-life claim only applies when your input TDS is below 1,000.

KENT vs Aquaguard at a glance

Models compared, with prices

KENT RO purifiers

Check KENT Grand on Amazon.in ↗Check Supreme Plus ↗Check Grand Plus ↗

Aquaguard RO purifiers

Check Aquaguard Sure Delight on Amazon.in ↗Check Enrich Glory ↗Check Ritz Pro ↗

Features that matter

Tank size. KENT's 8 to 9 L tanks are a real advantage during power cuts or for families of five or more. Aquaguard's 5 to 6 L tanks refill quickly but some Sure Delight and Ritz Pro buyers say the tank feels small.

TDS control and minerals. KENT models let the technician adjust output TDS to keep some natural minerals. Aquaguard uses a mineraliser (Sure Delight) or copper and alkaline boost (Glory, Ritz Pro). Both brands market copper and alkaline stages with health benefits; these are manufacturer claims, not proven health advantages.

Water saving. RO always produces some reject water. Aquaguard claims over 40% recovery on the Sure Delight (when input TDS is below 1,000), but some owners say reject water is still high. You can reuse reject water for mopping, plants or washing.

Smart monitoring. Only the Aquaguard Ritz Pro shows TDS in and out in real time and tracks filter life in an app, with automatic service requests. Its stainless-steel tank is also a plus for buyers who prefer to avoid plastic storage.

Power. KENT lists 60 W for all three models, which is low. Aquaguard does not state wattage on these pages.

Reliability and service: what buyers report

With water purifiers, service matters as much as the machine, because filters need replacing. These themes come from Amazon.in reviews on 3 November 2026 and are buyer reports, not failure rates.

A pattern for both brands: buyers are surprised by add-on charges at installation (pre-filters, pressure-reducing valves, TDS adjustment). Ask the installer for a written list of anything not included before work begins.

Warranty and running costs

• KENT: 1-year warranty on all three. The Supreme Plus and Grand Plus add 3 years of free service, which covers service visits, not a 3-year product warranty. Service: 92789 12345, service@kent.co.in.
• Aquaguard: 1-year warranty on Sure Delight (with free installation, two free cleanings and unlimited repair visits in year one) and Glory (plus a separate 4-year free service plan). The Ritz Pro advertises a 2-year unconditional warranty covering filters and spares. Service: 1860 266 1177 or 7039883333.
• Filter life: Aquaguard claims up to 2 years or 10,000 L for the Sure Delight's NanoPore 2X (input TDS below 1,000) and 12,000 L for the Glory. We could not find comparable published filter and AMC prices for both brands, so ask for the yearly maintenance cost before you buy.
• Certification: KENT's site cites BIS, NSF and IS 10500 claims, but model-level certificate numbers were not shown. We did not find certificate numbers for the Aquaguard models either.

Which one should you buy?

Pros and cons

Before you order: checklist

• ✓Test your input TDS. RO for high TDS; UV or UV+UF is often enough for low-TDS municipal water.
• ✓Confirm the exact model code and tank size with the seller.
• ✓Ask what installation includes: pre-filter, pressure valve, TDS adjustment, wall fittings.
• ✓Get the yearly filter or service-plan price in writing.
• ✓Check the warranty type: product warranty vs free service vs unconditional.
• ✓Plan a use for reject water (mopping, plants, washing).

Frequently asked questions

Which is better, KENT or Aquaguard?

KENT is better if you want a bigger tank and simple RO with TDS control. Aquaguard is better on entry price and smart features. Both get mixed service reviews, so local service quality in your city matters as much as the brand.

Is RO water safe to drink every day?

Yes, RO water is widely used for drinking. KENT and Aquaguard both add minerals back or let you adjust TDS. If your supply is already low in TDS, a UV purifier may be a better fit.

Are copper and alkaline purifiers worth it?

They mainly add cost. The health claims come from manufacturers and are not independently proven. Choose them only if you like the taste and the price gap is small.

How often should RO filters be changed?

It depends on your water and usage. Aquaguard rates its NanoPore 2X for up to 2 years or 10,000 L at input TDS below 1,000. Follow the service alerts or the installer's advice.

Does an RO purifier waste a lot of water?

All RO purifiers produce reject water. Aquaguard claims over 40% recovery on the Sure Delight. Reusing reject water for cleaning reduces waste. See our tips on cutting kitchen energy use and reducing plastic in the kitchen.

How we researched this

We did not lab-test these purifiers. We compared official KENT and Eureka Forbes product, warranty and service pages with Amazon.in listings, ranks and review summaries on 3 November 2026. Where sources disagreed, we said so. Sources:

• KENT Grand: official page
• KENT Supreme Plus: official page
• KENT Grand Plus: official page
• KENT service
• KENT About Us
• Aquaguard Sure Delight 2X: official page
• Aquaguard Enrich Glory 2X: official page
• Aquaguard Enrich Ritz Pro 2X: official page
• Eureka Forbes water purifiers (RO vs UV guidance, helplines)
• Eureka Forbes About Us
• Amazon.in listings for all six models (linked in the tables above)

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