Innovative Air Quality Solutions
Stainless steel sparkling water purifier with labeled front panel and dispenser for sparkling, lightly sparkling, and still water options.

HW-CS01 Under-Sink Cold & Sparkling Water System

Categories: Undersink Water Purifier

An integrated under-sink platform that delivers ambient, chilled and sparkling water through one smart multi-function faucet.

  • Three water options: ambient, chilled and sparkling
  • Compressor cooling with up to 1 gallon per hour rated capacity
  • Smart multi-function faucet with light-ring indication
  • Quick-change composite filter with automatic water shutoff
  • Modular configurations for different product requirements
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Product Description

More Than Filtration: A Complete Under-Sink Water Experience

The HisoAir Under-Sink Cold & Sparkling Water System integrates water filtration, compressor cooling and carbonation into one compact product platform.

Users can access ambient, chilled or sparkling water through one multi-function faucet, while the main appliance remains installed beneath the sink to help keep the countertop clear.

The modular architecture can be adapted for residential kitchens, premium apartments, office beverage areas, hospitality projects and branded healthy-home product portfolios.

Under-sink cold and sparkling water system installed inside a kitchen cabinet

Three Water Options from One Smart Faucet

Users can select ambient, chilled or sparkling water through the integrated faucet interface. The light-ring display provides visual feedback for the selected dispensing mode.

◇
Ambient Water Everyday drinking and cooking
❄
Chilled Water Cooled water on demand
○○
Sparkling Water Optional carbonated water
Smart faucet dispensing ambient chilled and sparkling water

Compressor Cooling for Consistent Chilled Water

The system uses compressor refrigeration to provide faster cooling and more stable chilled-water performance for regular household and light-commercial use.

  • Rated refrigeration capacity of approximately 1 gallon per hour
  • Approximately 0.75-gallon chilled-water storage tank
  • Target chilled-water temperature of approximately 3°C
  • Approximately 0.75 gallon of continuous water below 7°C under specified conditions
  • Automatic cooling activation according to detected water temperature

Actual performance depends on inlet-water temperature, ambient conditions, dispensing frequency and final product configuration.

Internal compressor cooling components of an under-sink sparkling water purifier

Integrated Sparkling Water Module

The carbonation module is integrated into the under-sink platform, eliminating the need for a separate countertop sparkling-water appliance. Water can be chilled before carbonation to support a more consistent dispensing experience.

Water flow process through filtration cooling carbonation and smart faucet modules
Integrated Architecture Cooling and carbonation modules are contained beneath the sink.
Chilled Before Carbonation The water path can be configured to cool water before adding carbonation.
Configurable Modules Product combinations can be selected according to market positioning.

Multi-Layer Composite Filtration

The quick-change cartridge combines several filtration materials in one compact structure to reduce sediment, residual chlorine, unwanted odors and compounds that may affect water taste.

1. Pleated Pre-Filter Layer Reference filtration accuracy: 10–15 microns
2. Charged Membrane Layer Reference filtration accuracy: 1–5 microns
3. Carbon Block Layer Reference filtration accuracy: 0.5–1 micron

Final contaminant-reduction claims must be supported by test reports or certifications applicable to the exact cartridge and final product model.

Single-stage composite water filter cartridge with pleated membrane and carbon block layers

Water-Break Quick-Change Cartridge

The cartridge uses a twist-lock replacement structure with an integrated water-stop mechanism. When the cartridge is rotated and removed, the internal valves are designed to close the water path and help reduce uncontrolled water discharge.

Water-break quick-change cartridge with automatic water shutoff during filter replacement
01 Rotate the cartridge approximately 90 degrees.
02 Unlock and remove the used cartridge.
03 Insert and lock the replacement cartridge.
04 Flush according to the operating instructions.

Modular Architecture for Different Product Strategies

Brands can select different combinations of cooling, filtration and carbonation according to their intended market, price positioning and user requirements.

Comparison of modular under-sink cooling filtration and sparkling water configurations
Cooling
Cooling + Sparkling
Filtration + Cooling
Filtration + Cooling + Sparkling

Final module selection affects product dimensions, water-path design, installation requirements, electrical configuration and certification scope.

Designed for OEM and ODM Water Projects

HisoAir works with brands and solution providers to evaluate product configuration, filtration architecture, installation requirements and market-specific compliance.

✓ Product branding and exterior finish
✓ Faucet design and surface treatment
✓ User-interface and light-ring logic
✓ Filter-media configuration
✓ Cooling and carbonation capacity
✓ Pipe and fitting layout
✓ Electrical configuration
✓ Packaging and documentation
✓ Installation kits
✓ Certification planning support

Specifications, functions and compliance claims are confirmed through the final approved sample, engineering specification and applicable test documentation.

Specifications

HW-CS01 Specifications
Dimensions
Product Dimensions
W × D × H		 211 × 475 × 400 mm
465 × 230 × 410 mm
System Specifications
Rated Voltage 230 V / 50 Hz
Refrigeration Power 100 W
Cooling Method Compressor refrigeration
Water Outlet Modes Ambient water, chilled water and sparkling water
Water Flow Rate Ambient water:
More than 0.5 gal/min at 0.24 MPa

Chilled water:
More than 0.5 gal/min at 0.24 MPa

Sparkling water:
Approximately 0.2 gal/min
Main Unit Display Light indication
Smart Faucet 6-in-1 smart faucet with light-ring indication
Water Pipe Connections Water inlet: 1/4 inch
Ambient-water outlet: 1/4 inch
Chilled-water outlet: 1/4 inch
Sparkling-water outlet: 1/4 inch
Filtration Performance
Filter Configuration Pleated filter + charged membrane + carbon block
Reference Filter Capacity 4 T
Suggested Replacement Cycle 4 T or 1 year, whichever comes first
Chilled-Water Performance
Refrigeration Capacity 1 gal/hour
Target Chilled-Water Temperature 3°C
Chilled-Water Tank Volume 0.75 gal
Continuous Chilled-Water Dispensing 0.75 gal at below 7°C
Sparkling-Water Performance
Carbonation Tank Volume 0.17 gal
Sparkling-Water Volume 0.04 gal
Sparkling-Water Concentration >21 g/G

Specifications are based on the current HW-CS01 product configuration and may be adjusted according to the final OEM or ODM project requirements.

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Why Choose Our Air Purifiers?

High-Performance Air Purification
Advanced Filtration Options
99.9% bacterial
removal rate
High CADR
(Clean Air Delivery Rate)
H13/H14 HEPA Filtration Options
Optional 270–280 nm UVC Module
H14 H13 extended filter life
lifespan HEPA filters
Third-Party Tested Filtration Performance

The Top 3 OEM/ODM Air purifier Manufacturer in China

Private labeling for branded Air Purifiers for decades

HisoAir offers private labeling air purifier services to clients who have already reviewed and agreed with HisoAir’s air purifier design and specifications. Once the agreement is signed, the selected products will be labeled with the client’s name.

OEM Air purifiers from start to end

HisoAir provides OEM air purifier services to partners who have the necessary specifications in a product. HisoAir provides research, design, engineering, mock ups or modifications, testing, and mass productions based on the client’s finalized design.

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Trusted by Renowned Global Brands

With over 20 years of expertise, we specialize in delivering IAQ solutions that seamlessly integrate with the needs of the world’s most recognized brands. Partner with us to achieve exceptional performance tailored to your market

TESTIMONIALS

“ I found hisoair's website from Google and to be honest, I wasn't sure if they were reliable at first, but they completed my project requirements in a month and a half. And when the project required the urgent addition of a CO2 Sensor, they had a new sample completed within a week, making them the most professional, customer-focused manufacturer I've ever worked with ”
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Thomas
Government supplier from Germany
“ We all know that the COVID has been a terrible disaster for the whole world, specially for the India, I've bought air purifier from HisoAir, this has been very useful for me and my office, home, families and friends.I've been working with Alwen for the last 7 years, who is from HisoAir, I can that he is a very reliable person, very efficient and very professional ”
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Ranjith Bala
Medical products importer from India
“ We are a company with over 15 years of experience in working with private institutions and private sectors, we have made collaboration with Hiso for 3 years, and we are really grateful for the works that Hiso has provided to us. We are grateful for the collaboration with Cherry and Mr. Lee ”
customer testimonials
Herina
Hospitals and government supplier from Romania

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we have made collaboration with Hiso for 3 years, and we are really grateful for the works that Hiso has provided to us. We are grateful for the collaboration with Cherry and Mr. Lee.
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Thomas
Government Supplier from Germany

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