KAROFI HOT & COLD CABINET RO WATER PURIFIER (DUO O-D138)

Experience Pure Water with Advanced RO Technology

The KAROFI Hot & Cold Cabinet RO Water Purifier (Model: DUO O-D138) is a premium Vietnamese-engineered water purification system designed to provide safe, healthy, and great-tasting drinking water for modern homes and workplaces. Built with advanced Reverse Osmosis (RO) Technology and an intelligent 8-stage filtration system, this purifier removes up to 99% of harmful contaminants while delivering Hot, Cold, and Normal purified water instantly from a single elegant cabinet.

Whether you’re preparing tea or coffee, enjoying a refreshing glass of chilled water, or simply drinking room-temperature water, the DUO O-D138 ensures maximum convenience without compromising water quality.

Advanced 8-Stage RO Purification System

Unlike ordinary water filters, the KAROFI DUO O-D138 uses a multi-stage purification process that thoroughly cleans water while improving its taste and safety.

Stage 1 – PP Sediment Filter

Removes sand, mud, dust, rust particles, and other large suspended impurities, protecting the internal filtration system.

Stage 2 – Granular Activated Carbon (GAC)

Absorbs chlorine, unpleasant odors, pesticides, insecticides, and harmful organic chemicals while improving water taste.

Stage 3 – Carbon Block (CTO)

Provides deeper chlorine removal and eliminates remaining fine particles to enhance filtration efficiency.

Stage 4 – Reverse Osmosis (RO Membrane)

The heart of the purifier. It removes:

• Bacteria
• Viruses
• Heavy Metals
• Lead
• Arsenic
• Mercury
• Cadmium
• Fluoride
• Dissolved Salts
• Microplastics
• Nitrate
• Harmful Chemicals
• TDS (Total Dissolved Solids)

with microscopic precision.

Stage 5 – Post Carbon Filter

Enhances the taste and freshness of purified water.

Stage 6 – Mineral Enhancement Filter

Adds beneficial minerals that improve drinking water quality.

Stage 7 – Alkaline Filter

Balances pH levels to make water smoother and more refreshing.

Stage 8 – Silver Nano / Antibacterial Filter

Provides an additional antibacterial layer to maintain hygienic drinking water before dispensing.

How Does the RO Technology Work?

The KAROFI DUO O-D138 follows a highly efficient purification cycle:

Raw Water → Sediment Filtration → Carbon Filtration → RO Membrane → Mineral Restoration → Antibacterial Protection → Purified Storage Tank → Hot/Cold Heating & Cooling System → Instant Drinking Water

The high-pressure RO membrane forces water through microscopic pores (approximately 0.0001 micron), allowing only pure water molecules to pass while rejecting harmful contaminants. The purified water is then stored in the internal tank before being heated or cooled according to your selected outlet.

Hot, Cold & Normal Water in One Machine

Forget waiting for kettles or refrigerators.

The KAROFI DUO O-D138 provides:

🔥 Instant Hot Water

• Tea
• Coffee
• Green Tea
• Baby Formula
• Instant Noodles

❄️ Instant Cold Water

• Chilled drinking water
• Cold beverages
• Summer refreshment

💧 Normal Purified Water

• Daily drinking
• Cooking
• Washing fruits & vegetables
• Making juice

Everything is available from one premium machine.

Where It Can Be Used?

The KAROFI DUO O-D138 is suitable for almost every environment.

Residential

• Apartments
• Villas
• Family Homes

Commercial

• Corporate Offices
• Banks
• Hospitals
• Clinics
• Schools
• Universities
• Hotels
• Restaurants
• Cafes
• Showrooms

Industrial & Institutional

• Factories
• Laboratories
• Reception Areas
• Conference Rooms
• Government Offices

Its 100 GPD purification capacity makes it ideal for medium to high daily water consumption.

Key Advantages

•  Advanced 8-Stage RO Purification
•  Hot, Cold & Normal Water from One Machine
•  Removes up to 99% of Harmful Contaminants
•  Elegant Premium Cabinet Design
•  Fully Automatic Operation
•  Large Water Storage Capacity
•  Energy Efficient Performance
•  Low Maintenance Cost
•  Safe Drinking Water for the Entire Family
•  Long-lasting Filter Performance
•  Premium Vietnam Technology
•  Suitable for Home & Commercial Use

Technical Specifications

• Model: DUO O-D138
• Brand: KAROFI
• Origin: Vietnam
• Technology: Reverse Osmosis (RO)
• Filtration: 8 Stage
• Capacity: 100 GPD
• Water Type: Hot • Cold • Normal
• Power Supply: 180–220V
• Operation: Fully Automatic
• Weight: 34 kg
• Dimensions: 380 × 310 × 960 mm

Why Choose Ecotech Water Technology?

Choosing the right supplier is just as important as choosing the right water purifier. At Ecotech Water Technology, we don’t simply sell products—we provide complete water purification solutions backed by years of industry experience.

Why customers trust Ecotech:

•  100% Genuine KAROFI Products
•  Professional Installation by Experienced Technicians
•  Expert Water Quality Consultation
•  Original Spare Parts & Genuine Filters
•  Reliable After-Sales Service
•  Fast Customer Support
•  Regular Maintenance & Filter Replacement Service
•  Competitive Prices Across Bangladesh
•  Trusted by Thousands of Residential & Commercial Customers
•  Nationwide Delivery & Technical Assistance

When you purchase from Ecotech Water Technology, you’re investing in authentic products, dependable service, and long-term peace of mind. From installation to maintenance, our experienced team is committed to ensuring your KAROFI DUO O-D138 continues to deliver safe, pure, and refreshing drinking water every day.

Drink Better. Live Better. – Ecotech Water Technology

📞 Contact:

📲 01728-026568 | 01332-511224
📧ewt@ecotechwaterbd.com
📍10 Hatkhola Rd, Tikatuli, Dhaka
📍 4/1 Hare Street, Wari, Dhaka

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