Boiling, Chilled & Sparkling Water Units — Supply, Installation & Servicing
Instant filtered boiling, chilled and sparkling water from a single tap — no kettle, no filter jug, no bottled water. Hot Water Maintenance supplies, installs and services Billi and Zip filtered water units for homes, offices, commercial kitchens and businesses across Sydney and Wollongong. Free site inspection and upfront fixed pricing before any work begins.
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What Is A Boiling, Chilled & Sparkling Water Unit?
A boiling, chilled and sparkling water unit is an underbench appliance that connects to your water supply and power, delivering instantly filtered water at any temperature — boiling, chilled or sparkling — from a single above-bench tap. There’s no waiting for a kettle to boil, no lugging water jugs in and out of the fridge, and no need to buy or store bottled sparkling water.
The underbench unit houses the filtration system, the boiling tank, the chilling refrigeration and (where applicable) the CO₂ carbonation system. All of this connects to one elegant tap above the bench, available in a range of designer finishes to suit both residential kitchens and commercial environments.
These systems are supplied, installed and serviced by a licensed plumber. Installation requires an under-bench cabinet space, a cold water connection and a standard 10-amp power outlet. Filter cartridges and CO₂ cylinders for sparkling models are replaced on an ongoing basis as part of regular servicing.
Benefits Of A Boiling, Chilled & Sparkling Water Unit
Filtered Water Units For Your Home
Kitchen Renovations
New kitchen builds and renovations are the most common time to install a filtered water unit. With the wall open and trades already on site, installation is straightforward. Both Billi and Zip offer tap finishes designed to coordinate with kitchen tapware, making integration seamless.
Families With Children
The safety lock on boiling water means these units are safe in family homes. Children can access chilled or sparkling filtered water independently without risk of accessing the boiling function. The elimination of a kettle on the bench also removes a common kitchen hazard.
Replacing Multiple Products
A single filtered water unit replaces the kettle, the benchtop filter jug and regularly purchased sparkling water — freeing up bench space and reducing the weekly grocery spend on bottled water over time.
Premium Home Upgrade
For homeowners investing in a premium kitchen, a Billi or Zip unit is a standard inclusion in high-end fitouts and adds genuine functional value alongside its aesthetic appeal.
Filtered Water Units For Commercial & Business Use
Office Kitchens And Staff Break Rooms
A filtered water unit in an office kitchen eliminates the need for a kettle, a plumbed cooler, and bottled water deliveries. Staff have instant access to boiling water for hot drinks and chilled or sparkling water for hydration throughout the day — with no maintenance burden beyond filter and CO₂ replacement on a scheduled cycle.
Cafes, Restaurants And Hospitality
Commercial Billi and Zip units can produce hundreds of cups of boiling and chilled water per hour, making them a practical addition to commercial kitchen and service environments. Instant filtered water at precise temperatures improves consistency in hot beverage preparation and reduces reliance on bottled water for service.
Medical Centres, Healthcare And Professional Offices
Zip’s SteriTouch antimicrobial protection on key water pathways and MicroPurity 0.2 micron filtration — certified to remove bacteria, cysts, microplastics and PFAS — makes Zip HydroTap units particularly suited to healthcare and professional environments where water hygiene standards are a priority.
Gyms, Fitness Centres And Shared Facilities
High-traffic commercial spaces with large numbers of users throughout the day benefit from the high-output commercial models from both Billi and Zip. Instant chilled and sparkling filtered water is a valued amenity in gym and fitness environments where hydration is central to the service offer.
Strata Buildings And Managed Properties
Common-area filtered water installations in strata buildings, serviced apartments and managed commercial properties can be supplied, installed and maintained by Hot Water Maintenance as part of an ongoing servicing arrangement.
Brands We Supply, Install & Service
Australian designed and made, Billi is a premium filtered water brand offering underbench boiling, chilled and sparkling water systems for both residential and commercial applications. The Billi Home range covers everything from boiling-only units through to full boiling, chilled and sparkling configurations, all delivering from a single above-bench tap with a concealed safety lock. The commercial Billi Eco and Quadra ranges are space-saving, energy-efficient and designed for high-use environments, meeting green building design principles. Billi uses BWT sub-micron filtration across its product range. Popular Billi models: Billi Home BC (boiling and chilled), Billi Home BCS (boiling, chilled and sparkling), Billi B5000 Sparkling, Billi Eco and Quadra (commercial).
Zip is the world leader in instant boiling water systems and the brand most widely recognised in Australian offices and commercial kitchens. The Zip HydroTap G5 range features MicroPurity 8-in-1 filtration (0.2 micron, certified to remove microplastics, PFAS, lead, asbestos, sediment, chlorine, bacteria and cysts), PowerPulse temperature maintenance (within 0.2°C), SteriTouch antimicrobial protection and a full-colour interactive touchscreen command centre. The G5 range carries a 5-year warranty. Zip’s commercial range includes high-capacity units producing up to 240 cups of boiling and 175 cups of chilled water per hour. Popular Zip models: HydroTap G5 BCS (boiling, chilled and sparkling), HydroTap G5 BC, HydroTap All-in-One, Celsius Plus (integrated mixer tap), commercial HydroTap range.
Hot Water Maintenance installs and services both Billi and Zip units. As this product category evolves, we continue to add new brands and models to our range. If you have a specific brand or model in mind, contact our team and we’ll confirm availability and suitability for your property.
Supply & Installation Of Filtered Water Units
All boiling and chilled water units require professional installation by a licensed plumber to maintain manufacturer warranty and ensure correct setup. Installation typically involves connecting the underbench unit to the cold water supply, running power to a 10-amp outlet, and fitting the above-bench tap through the benchtop or sink.
For new kitchen builds and renovations, installation is most straightforward when coordinated with other trades during the fit-out stage. Retrofitting to an existing kitchen is also achievable in most cases and is the most common installation scenario for residential upgrades. Our technicians carry out a free site inspection before installation to confirm underbench space, water connection points and power availability, and to confirm the right model for your needs. Most standard installations are completed in a single visit.
Filter Replacement & Ongoing Servicing
Boiling and chilled water units require regular filter cartridge replacement and, for sparkling models, ongoing CO₂ cylinder replacement. Filter life varies by brand, model and usage but is typically every 6–12 months for residential use and more frequently for high-demand commercial installations.
Regular servicing also checks the unit’s performance, the boiling and chilling functions, the filtration integrity and any signs of wear on connections or components. Keeping up with filter replacement maintains water quality and protects the unit from scale or contamination damage.
Hot Water Maintenance provides ongoing service and maintenance for both Billi and Zip units, including filter supply and replacement, CO₂ cylinder replacement for sparkling models, and performance checks. We can set up a regular servicing schedule for commercial installations to ensure the unit is always operating at its best.
Why Choose Hot Water Maintenance For Your Filtered Water Unit
Free Site Inspection
We assess your underbench space, water connections and power availability before recommending a model. No obligation, no guesswork.
Licensed Plumber Installation
All installations are carried out by a licensed plumber, maintaining full manufacturer warranty on both Billi and Zip units.
Upfront Fixed Pricing
You receive clear pricing for supply, installation and any required plumbing work before anything starts. No surprises on the invoice.
Ongoing Servicing Available
We can set up a regular servicing schedule for filter replacement and system checks — particularly useful for commercial installations where consistency matters.
Zero Call Out Fee
Get a site inspection and unit recommendation without hidden attendance charges.
Trusted By Offices & Businesses Across Sydney & Wollongong
Hot Water Maintenance has installed and serviced Zip units in offices and commercial spaces across our service area. Our existing commercial clients value the reliability and the straightforward servicing arrangement.
Filtered Water Units Across Sydney & Wollongong
Our core local service area for emergency hot water repairs, system replacements, installations and servicing. We regularly help homeowners, landlords, strata properties and local businesses across Caringbah, Cronulla, Miranda, Sutherland, Gymea, Engadine, Taren Point, Sylvania and surrounding Sutherland Shire suburbs.
Call to confirm coverage for your area. We're expanding our service zones regularly.
Frequently Asked Questions
