Compare specifications, purification technology, storage capacity, and technical data for all water purifier models in India. RO, UV, UF, and gravity-based variants.
| Feature | Kent | Aquaguard | Pureit | Livpure | AO Smith |
|---|---|---|---|---|---|
| RO Membrane | |||||
| UV Purification |
Everything you need to know to choose the right water purifier for your home. No marketing, just facts.
| Feature | RO | UV | UF | Gravity |
|---|---|---|---|---|
Removes TDS | Yes | No | No | No |
Common questions about water purifiers answered with facts, not marketing speak.
Check your water TDS (Total Dissolved Solids) level:
You need RO if: • TDS level is above 200 ppm • Water source is borewell, tanker, or hard tap water • Water tastes salty or has visible scaling on taps/utensils • You're in areas with high groundwater pollution
You DON'T need RO if: • TDS is below 200 ppm • Water source is treated municipal supply • Water is soft and doesn't leave scaling
Get a TDS meter (₹200-500) or test your water at a lab to confirm.
Last Updated: 13 Mar 2026
Data Sources: Manufacturer specifications, certified lab reports
Update Frequency: Weekly
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| Mineralizer/TDS |
| Hot Water |
| Smart Features |
| Copper Technology |
Kills Bacteria/Virus | Removes | Kills 99.9% | Removes | No |
Requires Electricity | Yes | Yes | No | No |
Water Pressure Needed | Yes (or booster) | Yes (low) | No | No |
Water Wastage | 3:1 ratio | Nil | Nil | Nil |
Maintenance Cost | High (₹3k-6k/year) | Low (₹1k-2k/year) | Low (₹1k-2k/year) | Very Low (₹500/year) |
Best for TDS Range | > 200 ppm | < 200 ppm | < 200 ppm | < 200 ppm |
Buy a TDS meter (₹200-500). Dip in water for instant reading. Most accurate method.
Contact local water testing lab. Get comprehensive water quality report (₹500-1000).
Check your city's water quality report online. Usually published by municipal corporation.
Tip: Storage capacity should hold at least 4-6 hours of your family's drinking water needs. RO purifiers fill slowly (10-15 L/hour).
What it does: Adds back essential minerals (calcium, magnesium) removed by RO.
Why important: RO reduces TDS to near zero, which can taste flat. Mineralizer brings TDS to 50-150 ppm for better taste and health.
Do you need it: Yes, if buying RO purifier. Essential for taste and mineral intake.
What it does: Provides hot water (80-90°C) for instant tea, coffee, soup.
Benefits: Saves time, energy efficient, convenient for warm water needs.
Consider if: You drink tea/coffee frequently, have kids (warm milk), or want instant hot water. Adds ₹3k-8k to cost.
UV LED: 10,000 hour life, instant on, lower power, no warm-up time.
UV Lamp: 8,000-10,000 hour life, needs warm-up, slightly higher power.
Both equally effective at killing bacteria. UV LED is newer technology with convenience benefits.
App connectivity: Monitor TDS, filter life, service alerts on phone.
Auto on/off: Starts purification when tank is low, saves power.
Worth it? Useful if you want monitoring. Not essential for basic purification. Adds ₹2k-5k.
Note: Actual life depends on water quality and usage. Hard water reduces filter life. Always use authorized service centers.
Most RO purifiers include booster pump. Works with any water source including overhead tanks.
Wall-mounted models save counter space. RO reject water can be used for cleaning, gardening.