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S18 UC Undercounter Sparkling Water System

High-end, space-saving system delivering generous capacity and exceptional still and sparkling water

The S18 UC is a high-capacity, undercounter sparkling water system that delivers premium chilled, sparkling, and ambient water on demand — producing up to 180 liters per hour* for high-volume applications like hotels and restaurants. Featuring an 11″ dispense height, rapid cold carbonation, and manual faucets for dependable dispensing, the S18 UC makes quick, efficient bottle-filling an easy task for any user, all while keeping the chiller and filtration tucked neatly under the counter.

*Capacity dependent on source water temperature

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S18 Undercounter

Features:

  • 3-tap chrome dispensing tower features chilled, sparkling, and ambient water
  • 4-stage advanced filtration system, mountable to the chiller or installed remotely
  • Carbonating chiller and purification system installs remotely or under counter
  • Insulated trunkline and water recirculation to ensure optimal temperature from chiller to tap
  • Unrivaled 22 lb ice bank chills a higher volume of cold water
  • Utilizes R290 environmentally friendly natural refrigerant
  • Equipped with a 1.7-liter sparkling tank for rapid cold carbonation
  • Programmable flow meter tracks usage and allows more consistent scheduled service and filter changes
  • Heavy-duty rotary faucets allow for pressure and flow control to limit splashing
  • Removable drip tray*** (optional recessed drip tray available)
  • Easily connects to external CO2** (regulator included)
Features:
Ideal for:
  • Cold | Sparkling | Ambient
  • Hotels
  • Restaurants
  • Bars & Cafes
  • High-Volume Foodservice
  • Hospitality Venues
Product Details

The S18 UC is a compact undercounter system designed for high-volume, dependable dispensing, pairing a 3-tap chrome tower with a carbonating chiller and 4-stage filtration that installs neatly out of sight.

Available Types
Water Options
Capacity & Users

Undercounter

Cold, Sparkling, Ambient

High-volume applications (hotels, restaurants)

Chilling capacity: up to 180 liters/hour*

Ice bank: 22 lbs
Specification
Details
Tap Dimensions
25.5″h x 5.2″w x 22.3″d
Drip Tray Dimensions
1.3″h x 15.0″w x 5.0″d
Undercounter Dimensions
25.2″h x 18.0″w x 23″d — width includes 4.3″ for filtration housing
Ventilation Clearance Requirement
See detailed installation guide for more information
Dispense Height

11.0″

Tap Dry Weight
20 lbs
Undercounter Dry Weight
94 lbs
Tower Tap Hole Size Requirement

2.0″

Chilling Capacity
180 liters per hour*
Cooling Technology
Ice bath chilling technology
Recommended Water Pressure
50 PSI
Ice Block Weight

22 lbs

CO2 Specification
Available external CO2 tank or bulk CO2 supply connection; operates at 55 PSI
Rated Voltage / Frequency / Running Amps
115V / 60Hz / 7 amps
Filtration
4-stage advanced filtration

Refrigerant

R290 (environmentally friendly, natural)

Model Number

S18 UC

*Capacity dependent on source water temperature

Installation & Maintenance

The S18 UC is designed to install out of sight while keeping service simple, so high-traffic venues get dependable sparkling, chilled, and ambient water without a bulky footprint on the counter.
  • Carbonating chiller and purification system install remotely or under the counter
  • 3-tap chrome tower mounts through a 2.0" tap hole with an 11" dispense height
  • Insulated trunkline and water recirculation maintain optimal temperature from chiller to tap
  • Recommended water pressure: 50 PSI; CO2 connection operates at 55 PSI
  • External CO2 tank or bulk CO2 supply connection supported, with regulator included
  • Professional installation available through the Premium Pure Water service team
  • Programmable flow meter tracks usage for consistent scheduled service and filter changes
  • 4-stage filtration system can be mounted to the chiller or installed remotely for easy access
  • Removable drip tray simplifies everyday cleaning; optional recessed drip tray available
  • Heavy-duty rotary faucets give pressure and flow control to limit splashing during use
  • Regular filter replacement handled by Premium Pure Water's service team

Find the Right Model for You

Not sure which sparkling system fits your space? Compare our most popular sparkling water systems side by side.

Feature
S18 UC
S18 Countertop
S4

Install Type

Undercounter

Countertop
Freestanding & Tower (with optional base)

Water Options

Cold, Sparkling, Ambient
Cold, Sparkling, Ambient
Cold, Sparkling, Ambient, Hot
Chilling Capacity

180 liters/hour*

180 liters/hour*
60 liters/hour

Cooling Technology

Ice bath chilling

Ice bath chilling

Ice bank

Dispense Height

11.0″

11.0″

Not specified
Filtration

4-stage advanced filtration

4-stage advanced filtration

Reverse Osmosis

CO2 Supply
External tank or bulk supply
External tank or bulk supply
Low
Best For
High-volume venues needing a space-saving, under-counter footprint

High-volume venues wanting an all-in-one countertop unit

Teams needing hot water in addition to cold, sparkling, and ambient

*Capacity dependent on source water temperature

Frequently Asked Questions

Product-specific FAQ questions to address common user queries and improve clarity.

How much water can the S18 UC produce per hour?

The S18 UC produces up to 180 liters per hour of chilled, sparkling, or ambient water, depending on the temperature of the source water, making it well suited to high-volume venues like hotels and restaurants.

The carbonating chiller and purification system install remotely or under the counter, connecting to a 3-tap chrome tower through a 2.0″ tap hole. An insulated trunkline with water recirculation keeps the temperature consistent from chiller to tap.

The S18 UC dispenses cold, sparkling, and ambient water through its 3-tap chrome dispensing tower.

Yes. It connects easily to an external CO2 tank or a bulk CO2 supply, operating at 55 PSI, and a CO2 regulator is included.

A 22 lb ice bank and ice bath chilling technology support high-volume chilling, while a programmable flow meter tracks usage for consistent scheduled service and filter changes. Heavy-duty rotary faucets provide pressure and flow control to limit splashing.

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