Kent Grand Plus vs AquaGuard Aura: Which RO Water Purifier Should You Buy?
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Both the Kent Grand Plus and AquaGuard Aura use RO+UV+UF purification. Both sit in the Rs. 13,000-16,000 range. But they make very different bets on what matters most. Kent adds UV LED tank sterilisation and TDS control to protect water quality after purification. AquaGuard adds Copper and Zinc enrichment to improve the mineral profile of purified water. This comparison covers purification technology, mineral addition, storage, speed, service, and price so you can pick the right purifier for your home.
Quick Specs Comparison
| Feature | Kent Grand Plus | AquaGuard Aura |
|---|---|---|
| Price | Rs. 15,999 | Rs. 13,499 |
| Rating | 4.3 out of 5 | 4.0 out of 5 |
| Technology | RO + UV + UF + TDS Control + UV LED tank | RO + UV + UF + Copper + Zinc (8 stages) |
| Storage | 9 Litres | 7 Litres |
| Purification Rate | 20 LPH | Not disclosed |
| Filtration Level | 0.0001 micron | RO membrane standard |
| Auto Flush | Yes | Yes |
| ISI Certified | Yes | Yes |
| Free Service | 4 years | 1 year |
| Brand | Kent | Eureka Forbes |
Purification Technology
Both models use the same core RO+UV+UF combination. RO removes dissolved solids, heavy metals, and bacteria. UV kills viruses and bacteria. UF acts as a physical membrane barrier. At this level, both deliver safe drinking water from municipal or borewell sources up to a standard TDS range.
The Kent Grand Plus adds a UV LED inside the storage tank. This keeps purified water sterile while it sits in the tank, preventing bacterial regrowth, a real issue in hot Indian summers. The filtration level is rated at 0.0001 micron, which removes even the smallest contaminants. Kent also carries ISI certification (IS 10500), which is the Bureau of Indian Standards benchmark for water purifiers.
The AquaGuard Aura runs 8 purification stages, which is above the standard 5-6 stages on most mid-range purifiers. This includes pre-sediment filtration, pre-carbon, RO, UV, UF, mineral cartridge (Copper + Zinc), post-carbon polish, and a storage stage. It is also ISI certified. Eureka Forbes is one of the oldest and most trusted water purifier brands in India, with a national service network.
Mineral Addition and TDS Control
This is where the two purifiers have the most distinct philosophies. RO removes a large portion of dissolved minerals along with contaminants. Long-term consumption of very low-TDS water is not ideal, and both brands address this differently.
The Kent Grand Plus uses a TDS controller that mixes a controlled amount of filtered bypass water back into the purified output. This retains essential minerals like calcium and magnesium and keeps the output TDS in a healthy range (typically 75-150 ppm). It does not add specific minerals , it retains them.
The AquaGuard Aura takes a different approach. It uses a dedicated Copper and Zinc cartridge that actively infuses these minerals into the purified water. Copper has known antimicrobial properties and has been used in Indian households for centuries for this reason. Zinc supports immune function. If mineral enrichment is a specific health priority for your family, the AquaGuard has a real advantage here.
Storage Capacity
The Kent Grand Plus has a 9-litre storage tank. For a family of 4-5, this covers drinking and cooking needs through a power cut or low-pressure period comfortably. The UV LED in the tank means stored water stays safe even if it sits for several hours.
The AquaGuard Aura has a 7-litre tank. That is sufficient for a family of 3-4 and covers typical daily drinking water needs. The 2-litre gap matters most during extended power cuts or high-demand periods like having guests.
Purification Speed
The Kent Grand Plus is rated at 20 litres per hour. That is fast enough to refill the tank from empty in under 30 minutes. For daily top-ups, you rarely notice any wait. The auto flush feature automatically cleans the RO membrane at intervals, which extends membrane life without requiring manual intervention.
Eureka Forbes does not publicly disclose the purification speed of the AquaGuard Aura in the product listing. Most AquaGuard models in this range operate at 12-15 LPH. The auto-flush feature is also present. In daily practice, both models keep the tank full under normal usage patterns.
After-Sales Service
This is the single most important long-term consideration for any RO purifier. Filters need replacement every 6-12 months, and the annual maintenance cost (AMC) can be Rs. 2,000-4,000 per year, depending on usage and water quality.
The Kent Grand Plus includes 4 years of free service in the purchase price. This is a significant value addition. Over four years, you avoid roughly Rs. 8,000-16,000 in service costs. Kent has 1,500+ service centres across India and is known for fast technician dispatch in metros and Tier 1 cities.
The AquaGuard Aura by Eureka Forbes comes with a 1-year warranty and service. Eureka Forbes has a well-established pan-India service network, arguably the largest among water purifier brands, and their AMC plans are competitively priced. However, the free service period is much shorter than Kent’s offering.
Price and Value
The AquaGuard Aura costs Rs. 13,499, which is Rs. 2,500 less than the Kent Grand Plus at Rs. 15,999. On paper, the AquaGuard is more accessible. But once you factor in 4 years free service on the Kent (versus 1 year on AquaGuard), the total cost of ownership equation shifts significantly in Kent’s favour.
If you are in a city or town where Eureka Forbes service is easily available and you plan to take their AMC, the AquaGuard’s lower entry price still makes sense, especially if the Copper enrichment feature is a health priority for your family.
Winner Summary
| Category | Winner | Reason |
|---|---|---|
| Purification | Kent Grand Plus | UV LED tank + 0.0001 micron filtration |
| Mineral Enrichment | AquaGuard Aura | Active Copper + Zinc infusion |
| Storage Capacity | Kent Grand Plus | 9L vs 7L |
| Purification Speed | Kent Grand Plus | 20 LPH confirmed |
| Free Service Period | Kent Grand Plus | 4 years vs 1 year |
| Upfront Price | AquaGuard Aura | Rs. 2,500 cheaper |
| Rating | Kent Grand Plus | 4.3 vs 4.0 on Amazon |
Verdict
Buy the Kent Grand Plus if:
- You want the best combination of purification and storage in this price range
- Your family is 4-5 people and needs reliable water during power cuts
- You value 4 years free service, which effectively makes the price gap disappear
- Your source water has high TDS, and you want a confirmed 20 LPH output speed
Buy the AquaGuard Aura if:
- Copper and Zinc enrichment are health priorities for your family
- Your budget is tight at under Rs. 14,000
- You trust Eureka Forbes service in your city and plan to take their AMC
- Your family is 3-4 people, and 7L storage covers your daily needs
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Frequently Asked Questions
What is the TDS of the output water from Kent Grand Plus?
The Kent Grand Plus uses a TDS controller to retain essential minerals in the output water. The actual output TDS depends on your input water quality, but typically ranges between 75 and 150 ppm when the TDS controller is set correctly, within the recommended range for drinking water. Input water TDS above 2,000 ppm is not suitable for this model.
Does the AquaGuard Aura work with borewell water?
Yes, the AquaGuard Aura is suitable for borewell water with moderate TDS levels. For very high TDS borewell water (above 1,500 ppm), membrane life may be shorter and service intervals more frequent. Eureka Forbes can advise on suitability based on your local water quality during installation.
Is the Copper in AquaGuard Aura safe to drink daily?
Yes. The AquaGuard Aura infuses Copper at trace levels that fall within the WHO and BIS safety guidelines for drinking water. The cartridge is designed to release a controlled amount. Storing copper-infused water for extended periods is not recommended , consume fresh purified water within the day for best results.
How often do filters need replacing on the Kent Grand Plus?
For the Kent Grand Plus, sediment and carbon pre-filters typically need replacement every 6 months. The RO membrane lasts 12-24 months, depending on usage and input water quality. Under the 4-year free service plan, Kent technicians handle replacements and service visits at no extra cost for the covered period.
Which purifier is better for Mumbai or Delhi tap water?
Both models handle municipal tap water well. Mumbai tap water TDS is typically 80-120 ppm , low enough that you could consider a UV-only purifier, though an RO adds peace of mind. Delhi tap water TDS runs higher at 200-500 ppm in some areas. For Delhi, the Kent Grand Plus with its TDS controller is better suited to retain minerals while removing contaminants. For Mumbai, either model works fine.
