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Water Purifiers · head to head

ProPlanet P4 Pro vs Sterling IoT

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Quick verdict

  • Sterling IoT is better for 4 to 6.
  • Sterling IoT is better for 7 or more.
  • Sterling IoT is better for big tank.
  • Sterling IoT leads on capacity.
  • Sterling IoT is the cheaper option at ₹22,799.

Computed from stored specifications, the published water purifiers scoring rules and recorded prices. Not an opinion.

Winners by area

Capacity Sterling IoT

Specifications side by side

Spec
ProPlanet P4 Pro
Sterling IoT
Purification
Technology
100% RO + SCMT + Copper Fortified Mineraliser + Alkaline + UV LED in tank
RO+UV+UF+Alkaline+Copper+TDS Control (under-the-counter, built-in hydrostatic tank)
RO
Yes
Yes
UV
Yes
Yes
UF
—
Yes
UV in tank
Yes
—
TDS / mineral control
—
Yes
Alkaline
Yes
Yes
Copper / zinc infusion
Yes
Yes
Purification stages
8
—
Capacity
Storage
5 litres
6 litres (better)
Purification rate
15 L/h
20 L/h (better)
Water recovery
60%
—
Build and features
Installation
Wall or counter top
Under sink
Power
60 W
60 W
App / smart features
—
Yes
Tank material
Food safe, non-toxic, engineering grade plastics
—
Model number
—
111185B
Colours
—
Black
Ownership
Warranty
1 year
1 year
Warranty terms
1-Year Comprehensive Warranty* (including all filters and RO membrane)
1 Year Warranty + 3 Years Free Service
Free service
—
3 Years Free Service

A tick marks the better value where the category rules say higher (or lower) is better. Text values are shown without a winner. Ties have no winner.

Price and availability

Store links are not paid: prices are copied from each store's own page with the date checked, and Comparezi earns only from labelled ads. How we earn

ProPlanet P4 Pro

₹24,900

Sterling IoT

₹22,799

Pros and cons

ProPlanet P4 Pro

  • Pro: UV light inside the storage tank keeps stored water treated
  • Con: Smaller storage tank than 84% of the 66 water purifiers on Comparezi that state it (5 litres)

Sterling IoT

No stated figure stands out against similar models on Comparezi, either way.

Which should you buy?

Sterling IoT if price matters most: it is the cheaper option at ₹22,799.

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