Head to head
Pureit Classic Gravity vs KENT Gold Optima: Which Should You Buy?
| Specification | ||
|---|---|---|
| Our score | 7.2/10 | 7.4/10 |
| Street price (indicative) | ₹1,449 | ₹2,790 |
| MRP | ₹1,800 | ₹3,500 |
| Brand | Pureit | KENT |
| Best for | Low-TDS treated supply, homes with unreliable power, hostels, site offices and second homes. | Homes on genuinely low-TDS treated municipal supply — Kerala, coastal Karnataka, Srinagar, Himachal. |
| Annual running cost (indicative) | ₹1,100 | ₹900 |
| Purification | Microfibre mesh + compact carbon trap + germkill processor + polisher | Hollow-fibre UF membrane (gravity fed) |
| Storage capacity | 23 litres (14 L purified) | 10 litres |
| Electricity | Not required | Not required |
| Running water | Not required | Not required |
| Removes | Bacteria, viruses, cysts, sediment | Bacteria, cysts, suspended particles |
| Does NOT remove | Dissolved salts / TDS | Dissolved salts, heavy metals, TDS |
| Germkill kit life | 1,500 litres | — |
| Warranty | 1 year | 1 year |
| Filter life | — | Approximately 4,000 litres |
| Purification score | 6.5 | 6.8 |
| Build quality score | 7.0 | 7.5 |
| Value for money score | 9.8 | 9.4 |
| Running cost score | 9.6 | 9.5 |
| Service network score | 8.5 | 9.0 |
| Pros |
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| Cons |
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| Where to buy |
Choose the Pureit Classic Gravity if…
- Genuinely removes bacteria and viruses without electricity or plumbing
- 23-litre body means a family can store a full day's drinking water
- Germkill kit costs a few hundred rupees and is available in almost every kirana-adjacent retail outlet
- Auto shut-off when the kit expires, same safety philosophy as Pureit's RO range
₹1,449 · Full review
Choose the KENT Gold Optima if…
- No electricity and no plumbing — works during power cuts and in rented rooms
- UF hollow-fibre membrane genuinely removes bacteria and cysts, unlike a candle filter
- Running cost of well under ₹1,000 a year
- Ideal second purifier for a hostel room, site office or village home on treated supply
₹2,790 · Full review
The deciding factors
This is the most misunderstood product category in India, so here is the rule: a gravity UF purifier removes microbes, not minerals. If your supply is treated municipal water below roughly 200 ppm and your worry is bacteria after a monsoon pipeline breach, the Gold Optima is genuinely all you need, and you will have spent ₹2,790 instead of ₹18,000.
Against that, Pureit Classic Gravity makes its case differently: It is worth pausing on what this product achieved. Before it existed, safe drinking water in India effectively required either an electricity connection and ₹15,000, or an hour of boiling fuel every day. The Classic Gravity delivers verified microbiological safety for under ₹1,500 with no power and no plumbing, and it is still the single highest-impact purchase on this entire website for a large number of Indian households.
Our practical advice: unless the KENT Gold Optima's specific advantages match a real constraint you have — tank size for long water cuts, a higher TDS rating for brackish supply, hot water you will genuinely use — the cheaper unit is the better purchase. In this category, paying for capability you will never use is the most common way money gets wasted.
Frequently asked questions
Pureit Classic Gravity or KENT Gold Optima — which is better?
What is the price difference between Pureit Classic Gravity and KENT Gold Optima?
Which handles high TDS water better, Pureit Classic Gravity or KENT Gold Optima?
Still undecided?
Tell us your city, your water source and your TDS if you know it, and we will tell you which of these two is right for you — or whether a third option fits better.