Open your fridge. How much space is wasted by plastic bottles? Half-empty mineral water from Coles. SodaStream bottles jamming the door shelves. It is a massive waste of prime fridge real estate. 

The constant cycle of buying, chilling, and storing bottles is exhausting. Which is exactly why Australian homeowners are looking at under-sink chilled water systems during their kitchen renos. Having sparkling water taps sounds like the ultimate luxury. Fizzy water straight from the benchtop. 

But let us talk about the money. Is it actually worth dropping thousands of dollars? Let’s look at the numbers for 2026.

What Is a Sparkling Water Tap?

A sparkling water tap is a specialized fitting on your benchtop that dispenses chilled, filtered, and fully carbonated water instantly.

You do not have to fiddle with gas cylinders on the counter. You don’t have to wait for the tap water to get cold. Everything is hidden completely out of sight. You just pull a lever, and you get crisp soda water straight into your glass.

Breaking Down the 2026 Setup Costs

These systems are an investment. A proper one. You aren’t just buying a basic mixer. You are essentially installing a commercial-grade beverage chiller inside your kitchen cabinetry.

A quality carbonated water tap will set you back between $2,500 and $4,500 AUD for the unit itself. That covers the tapware, the under-sink chiller, the carbonation module, and the heavy-duty filtration setup.

Then you have to pay the tradies. Expect to hand over $300 to $600 AUD for professional installation. You need a licensed plumber to run the water lines. And a sparkie to sort out a dedicated 10-amp power point.

It sounds like a lot of cash. Because it is. But you have to look at what you are replacing.

The Hidden Costs of Plastic and Soda Makers

Let’s do some quick maths.

Say your family goes through two bottles of premium sparkling water a day at $3 AUD each. That is $42 AUD a week. Over $2,100 AUD a year. Just on fizzy water.

Suddenly, that upfront installation cost does not look so crazy. It pays for itself in about two years.

What about a benchtop soda maker? Sure. They are cheap upfront. Maybe $100 AUD at Target. But they take up valuable bench space. You still have to chill the water in the fridge first. And you are constantly swapping out those little CO2 gas cylinders. It is messy. Annoying. And it never tastes quite as crisp as a proper home sparkling water system.

What Your Tradies Actually Need

You cannot just buy a system online and chuck it under the sink on a Sunday. It takes planning.

I have seen plenty of people buy an under-sink chilled water system without measuring their cabinet space first. Big mistake.

Here is what your installation team actually needs:

Cabinet space: The chiller unit is roughly the size of a computer tower. It needs room to breathe.Ventilation: Your cabinet maker needs to install a vent in the kicker board. If they don’t, the compressor will overheat and fail.Power: A dedicated RCD-protected electrical circuit under the bench.Bench cutout: Your stonemason needs to drill a specific 35mm hole in your stone benchtop for the tapware.

Doing this during a proper kitchen reno is incredibly easy. Retrofitting into an existing kitchen? A bit trickier. But any decent tradie can sort it out if you have the space available.

The Lifestyle Upgrade

Once you get past the installation and the initial invoice, the daily reality is brilliant.

No more warm soda water. No more flat bottles sitting in the fridge door, taking up space for the milk. Just instant, perfectly chilled, highly carbonated water whenever you want it.

It is incredible for entertaining on the weekend. You make fewer trips to the supermarket. And you take a massive chunk out of your household plastic waste. Plus, it genuinely gets the kids drinking way more water.

Making the Final Call

Are they worth the money? Yes. If you have the budget for your renovation and you actually drink soda water regularly, it is easily one of the best upgrades you can make. The convenience is completely addictive. Just make sure you buy a system with solid support and easy-to-source CO2 canisters.