Best RO Filter for Home – Types, Price & Buying Guide
Introduction: Clean Water Starts with the Right RO Filter
Clean, safe, and healthy drinking water is not a luxury—it’s a necessity. In India, where water quality often varies from region to region, an RO (Reverse Osmosis) water purifier has become a common household solution. But what really ensures that your RO water purifier performs at its best? The answer lies in its RO filter system.
FACT: A well-maintained RO filter system can remove up to 99% of dissolved salts (TDS), heavy metals like lead and arsenic, and microbial contaminants, making tap water fit for drinking.
In this comprehensive guide, we explore the types of RO filters, prices in India, and how to choose the best RO filter for your home or office. This blog will also link you to top RO filter options available online.
How Does an RO Filter Work?
An RO filter system uses multiple stages of filtration to purify water:
-
Pre-filtration – Removes sediment, sand, and larger particles.
-
Activated carbon filtration – Removes chlorine, pesticides, and organic chemicals.
-
RO membrane – Eliminates dissolved salts, bacteria, and heavy metals.
-
Post-filtration (UV/UF/Alkaline) – Enhances taste and balances pH.
Each of these filters works in harmony to ensure that the final output is clean, mineral-rich, and safe water.
Types of RO Filters Explained
A typical RO system uses a combination of these filters:
1. Sediment Filter
Sediment filters are the first line of defense. They remove visible particles like dirt, rust, and silt. A good example is the Kemflo PS-05 Pre 10-Inch Spun Filter, which is ideal for domestic RO systems.
2. Carbon Filter (CTO Filter)
Carbon filters eliminate chlorine, bad taste, and organic impurities. The 10-Inch White Color CTO Filter is made from high-quality polypropylene and works efficiently in most RO systems.
3. Pre-Carbon Filter
These filters protect the RO membrane by removing chlorine and other harmful chemicals. Consider the Lexpure Flux Pre-Carbon Filter for durable performance.
4. RO Membrane
This is the core of any RO system. It filters out TDS, bacteria, and viruses. Though this blog focuses more on the surrounding filters, the membrane is usually housed in a membrane housing unit and must be compatible with your system.
5. Alkaline Filter
Alkaline filters improve the pH of water and add essential minerals like calcium and magnesium. For health-conscious consumers, the Bio Aqua Blue Color Alkaline Filter is a great addition.
6. Thread Filters
Used mainly in pre-filtration stages to remove coarse particles. The 20-Inch 4” Diameter Thread Filter is suitable for higher flow rates in domestic setups.
You can also browse more options in one place under RO Filter Category – Domestic Spares.
Best RO Filter for Home Use
What to Look For:
-
Water source type (borewell, tank, municipality)
-
TDS level
-
Number of filtration stages
-
Brand reliability
-
Filter compatibility with your RO system
Top Picks in India:
-
Bio Aqua Alkaline Filter – Best for improving water taste and health
-
Kemflo Spun Filter – Great for initial filtration
-
CTO and Pre-Carbon Filter Combo – Ideal for removing odor and chlorine
Each of these plays a specific role and must be replaced periodically to ensure optimal performance.
RO Filter Price in India (2025 Guide)
Filter prices vary based on type, size, material, and brand. Here’s a rough breakdown:
| Filter Type | Price Range (INR) | Example Product |
|---|---|---|
| Sediment Filter | ₹40 – ₹150 | Kemflo PS-05 Spun Filter |
| Carbon Filter | ₹90 – ₹250 | 10-Inch CTO Filter |
| Pre-Carbon Filter | ₹80 – ₹200 | Lexpure Flux Pre-Carbon |
| Alkaline Filter | ₹300 – ₹650 | Bio Aqua Alkaline Filter |
| Thread Filter | ₹150 – ₹350 | 20-Inch Thread Filter |
For more pricing and filter combinations, explore the full RO Filters Collection.
RO Filter Maintenance Tips
Proper maintenance ensures long-lasting performance and clean water:
-
Replace filters every 3–6 months (depending on usage and TDS level).
-
Clean pre-filters regularly to avoid clogging.
-
Check the pressure pump and membrane annually.
-
Buy compatible filters only to avoid malfunctioning.
Common RO Filter Problems and Solutions
| Problem | Possible Cause | Solution |
|---|---|---|
| Low Water Flow | Clogged sediment/carbon filter | Replace filters |
| Bad Taste or Odor | Worn-out post-carbon or alkaline filter | Replace filter |
| RO System Not Turning On | Electrical issue or faulty pump | Check power supply and pump |
| Leakage from Filter Housing | Loose fittings or worn-out O-rings | Tighten or replace parts |
RO Filter vs Other Water Purification Technologies
| Feature | RO Filter | UV Filter | Gravity Filter |
|---|---|---|---|
| Removes TDS | Yes | No | No |
| Removes Bacteria | Yes | Yes | Some |
| Removes Heavy Metals | Yes | No | No |
| Electricity Required | Yes | Yes | No |
| Ideal For | All water sources | Low TDS municipal water | Municipal water |
Where to Buy RO Filters Online in India
Buying genuine RO filters ensures safety and compatibility. Trusted marketplaces like Romegamart offer a wide range of filters for domestic and industrial RO systems.
You’ll find top brands, filter combos, and deals with verified seller ratings—everything you need to keep your RO system running efficiently.
Conclusion: Choosing the Right RO Filter for Your Needs
The heart of any RO water purifier lies in its filters. Whether you're a homeowner looking for better-tasting water or a buyer sourcing filters for commercial use, understanding the types, prices, and quality of RO filters can help you make informed choices.
Choose filters based on your water quality, usage, and purifier model. Don’t compromise on quality—opt for trusted suppliers like Romegamart for a complete selection of reliable RO filter solutions.
Snippet Summary for SEO (FAQ or Featured Snippet Box):
What is an RO Filter?
An RO filter purifies water by removing TDS, heavy metals, and bacteria through multiple filtration stages, including sediment, carbon, and membrane filters. It's widely used in Indian homes for safe drinking water.
