Clean drinking water is essential, especially in Bangladesh where water quality often faces challenges due to contaminants. Investing in a reliable RO (Reverse Osmosis) water purifier can significantly improve water quality and safety. Here’s a guide to the best RO water purifiers for 2025, focusing on top models and prices.

Top 10 RO Water Purifiers in Bangladesh 2025

1. Kent Grand Plus RO+UV+UF+TDS – BDT 18,000
2. Pureit Classic RO+MF – BDT 12,500
3. Aquaguard Enhance RO+UV+UF – BDT 15,500
4. Livpure Glo RO+UV+UF – BDT 14,000
5. Blue Star Aristo RO+UV – BDT 13,000
6. City Max RO+UV – BDT 10,000
7. Pureit Ultima RO+UV+MF – BDT 22,500
8. HUL Pureit Classic – BDT 9,500
9. Kent Supreme Plus RO+UV – BDT 16,000
10. LG Puricare RO+UV – BDT 20,000

Full Review

1. Price

RO water purifiers are available at a range of prices to fit different budgets. Generally, standard RO systems start from around BDT 10,000 and can go up to BDT 25,000 or more for advanced models with features like UV/UF filtering, digital displays, and mineral enhancers.

2. Specifications

RO purifiers operate by pushing water through a semi-permeable membrane that removes contaminants. Most models come with multi-stage filtration, incorporating RO, UV, UF, and TDS control. For example, models like the Kent Grand Plus and Aquaguard Enhance include a 7-liter tank, six filtration stages, and energy-saving features.

3. Performance

A good RO purifier should provide up to 99% removal of contaminants like heavy metals, salts, and bacteria. Advanced models with mineral retention technology, like the LG Puricare, ensure that beneficial minerals are retained while purifying the water, improving taste and nutritional value.

4. Design

Most RO purifiers feature a sleek and compact design to fit modern kitchens. Models like the Livpure Glo and Blue Star Aristo have been noted for their compact, space-saving designs, while premium models such as Pureit Ultima feature touch controls and digital displays for added convenience.

How-To & Tips and Tricks

Installation Tips

• Install the purifier close to your water source for better performance.
• Make sure there’s adequate space for maintenance and filter changes.

Maintenance Tips

• Clean the water tank periodically to prevent algae or bacteria growth.
• Replace filters on time; generally, pre-filters need changing every six months, and RO membranes every 2-3 years, depending on usage.

Optimizing Performance

• Adjust the TDS controller to ensure a balanced mineral content in the water.
• Choose models with UV/UF if your water source has microbial contaminants.

Frequently Asked Questions (FAQs)

• How does an RO water purifier work? It uses a semi-permeable membrane to remove dissolved impurities, bacteria, and viruses through multiple filtration stages.
• What contaminants does it remove? RO purifiers remove heavy metals, salts, nitrates, bacteria, viruses, pesticides, and chlorine.
• How often should I change the filters? Pre-filters every 6 months, RO membranes every 2-3 years, and post-filters every 12 months are typical replacement schedules.
• Is it expensive to maintain an RO purifier? Maintenance includes filter replacement, usually costing between BDT 2,000-5,000 annually.
• Does it waste water? Traditional RO purifiers can waste 3-5 liters of water per liter of purified water, though newer models reduce waste.