Quick Answer – The Main Types of Toilets You’ll See in Australia
Shopping for a new toilet in Sydney? The four main types of toilets in Australia are close-coupled, back-to-wall, wall-faced, and wall-hung. Each one looks different, costs differently, and fits differently to your existing plumbing. Pick the wrong one and you’re up for a return trip to the store, or worse, a plumber to re-run the waste pipe.
- Close-coupled: Cistern bolts straight onto the pan. The everyday workhorse of Australian bathrooms.
- Back-to-wall: Pan sits tight to the wall with the trapway hidden. Cleaner lines, easier to wipe down.
- Wall-faced: Very similar to back-to-wall. Pan hugs the wall, trapway concealed. Terms are often used interchangeably by retailers.
- Wall-hung (in-wall cistern): Bowl floats off the floor, cistern hides inside the wall. The cleanest look of the lot.
Toilet Types Explained (What They Are + Best For)
Here is what each type actually means on the ground and who it suits.
Close-Coupled Toilets
The cistern sits on a plate bolted to the back of the pan. All the plumbing is out in the open. This is the design most of us had growing up, and it still makes sense for plenty of situations.
- Pros: Lowest cost, parts are everywhere, dead simple to install, huge range of brands.
- Cons: More nooks around the base and cistern to clean. Not as slick-looking as newer styles.
- Best for: Rental properties, quick like-for-like swaps, tight budgets, traditional bathrooms.
- Price range: Roughly $150 to $600 depending on features.
Back-to-Wall Toilets
The pan pushes right up to the wall and the trapway disappears behind it. The cistern can sit on a ledge, inside a cabinet, or semi-concealed in a false wall.
- Pros: Cleaner look, less grot to clean around the base, hides the pipework.
- Cons: Costs more than close-coupled, may need a false wall or cabinet built, trap access can be awkward.
- Best for: Bathroom upgrades, alcoves and recesses, anyone who wants a neater result without going wall-hung.
- Price range: $300 to $700 for the suite, plus any cabinetry or wall prep.
Wall-Faced Toilets
The pan sits close to the wall with a concealed trapway and a tidy profile. Aussie retailers often use ‘wall-faced’ and ‘back-to-wall’ to mean the same thing. Rather than getting caught up in labels, check the physical specs: does the pan sit flat to the wall, is the trapway hidden, and how is the cistern mounted?
- Pros: Contemporary look, concealed plumbing, simpler cleaning routine.
- Cons: Wall preparation usually needed, terminology varies between suppliers.
- Best for: Renovators after clean lines, buyers who want modern aesthetics on a mid-range budget.
- Price range: Mid to upper mid-range, similar to back-to-wall models.
Wall-Hung Toilets (In-Wall Cistern)
The bowl mounts to a steel frame inside the wall and floats above the floor. The cistern hides completely behind a flush plate. Nothing touches the floor, which makes the room feel bigger and the whole toilet far easier to clean.
- Pros: Sleekest look available, floor totally clear for mopping, height is adjustable at install, brilliant for accessibility.
- Cons: Higher product and labour cost, serious wall framing work required, cistern faults mean accessing the wall panel, not a DIY job.
- Best for: New builds, full bathroom renovations, luxury homes, anyone needing adjustable seat height.
- Price range: In-wall frame and cistern from $400 to $800, plus the pan and flush plate. Total install costs can push well past $1,200.
Other Toilet Types You May See
Smart or bidet toilets add heated seats, built-in wash functions, air dryers, and sometimes even ambient lighting. They need a power point nearby, so factor in electrical work if you want one.
Comfort-height (ambulant) toilets have a taller pan, typically around 460 to 480mm seat height versus the standard 400mm. They are much easier on anyone with limited mobility, elderly residents, or people recovering from surgery.
Will It Fit Your Bathroom? The 4 Checks Most People Miss
Before you fall in love with something at the showroom, confirm it will actually connect to your existing plumbing. Here are the four things to check.
1) Trap Type: S-Trap vs P-Trap (Australia)
Australian toilets come in S-trap and P-trap variants. An S-trap outlet drops straight down through the floor. A P-trap outlet exits horizontally through the wall behind the pan. Look at where your current toilet connects to the drain and buy the matching type. Getting this wrong means the toilet won’t connect without a pipe relocation.
2) Set-Out (Rough-In) Measurement
Set-out is the distance from the finished wall surface to the centre of the waste pipe outlet. Common Australian S-trap set-outs are 90mm, 120mm, 140mm, 160mm, 180mm, and 240mm. P-traps are generally 180mm to 200mm from wall to centre. Measure before you shop. Some toilets come with adjustable connectors for minor variations, but a significant mismatch means a plumber needs to move the pipe.
3) Water Inlet Position (Bottom/Rear) and Tap Clearance
The supply line can enter the cistern from the bottom or from the side and rear. If your existing tap sits in a fixed spot and the new cistern inlet is somewhere different, you may need to move the tap or use a longer flexi hose. Check clearance around the cistern too, because a badly positioned tap can physically block installation.
4) Renovation Complexity (Especially Wall-Hung/In-Wall)
A wall-hung toilet is not a weekend swap. You need to frame the wall to house the cistern, install an access panel for future servicing, waterproof and tile over the lot, and confirm the structure can carry the load. This touches carpentry, tiling, waterproofing, and plumbing all at once. It is perfect for a full reno, but it is not a quick fix.
Water Efficiency and Compliance in Australia (WELS + WaterMark)
Two labels matter when you’re buying a toilet in Australia. Both affect what a licensed plumber can legally install.
WELS Water Rating Label (What to Look For)
WELS (Water Efficiency Labelling and Standards) gives toilets a star rating from one to six. More stars means less water used. Dual-flush toilets, which are standard across the country, offer a half flush of around three litres for liquids and a full flush of four and a half to six litres for solids. That is a big saving compared to old single-flush pans that could gulp nine to twelve litres every time. Picking a higher-rated model cuts your water bill and is better for the environment.
WaterMark Certification (Why It Matters)
WaterMark is Australia’s certification scheme for plumbing products. Licensed plumbers are required by law to install WaterMark-certified products. A toilet without that certification cannot be legally installed by a tradesperson in NSW, may not comply with building codes, and could cause headaches with your home insurance. Always check for the WaterMark label, especially with imported or online-only products where certification is not always guaranteed.
Which Toilet Type Is Best for Your Sydney Home?
The right choice depends on your bathroom size, budget, and what matters most to you. Here is a quick run-through.
- Small bathroom: Look for compact-projection close-coupled or back-to-wall models. Wall-hung also works well because the clear floor makes a tight room feel bigger.
- Easy cleaning is the priority: Wall-hung toilets with rimless flush designs are the gold standard. Nothing on the floor and no hidden rim to harbour grime.
- Tight budget or rental property: Close-coupled is the call. Affordable, widely available, and simple to replace.
- Modern renovation or high-end home: Wall-hung with an in-wall cistern, paired with a quality flush plate and a high WELS rating.
- Accessibility or comfort needs: A comfort-height (ambulant) pan or a wall-hung toilet set at a custom height. Both make sitting and standing significantly easier.
When to Call a Licensed Plumber in NSW
Buying a toilet is a DIY job. Installing one is not, at least not in NSW.
- Your new toilet’s set-out does not match the existing waste pipe location.
- You need the water inlet or isolation tap moved.
- You’re fitting a wall-hung toilet with an in-wall cistern (wall framing, access panels, and structural work required).
- Your current toilet is leaking, rocking, or cracked.
- You are doing a bathroom renovation where plumbing must meet NSW building codes.
All plumbing work in NSW must be carried out by a licensed tradesperson. Unlicensed work can void your home insurance, breach building codes, and cause safety hazards. Always ask to see credentials before any work starts.
FAQs
What are the most common toilet types in Australia?
Close-coupled toilets are the most widely installed due to their low cost and simplicity. Back-to-wall and wall-faced models are popular in renovated bathrooms. Wall-hung toilets are increasingly common in modern new builds and high-end renovations.
What’s the difference between back-to-wall and wall-faced toilets?
Both sit close to the wall with a concealed trapway. The distinction is mostly a retailer labelling issue rather than a meaningful technical difference. When shopping, focus on the physical specs and installation requirements rather than the name on the tag.
How do I measure toilet set-out in Australia?
For an S-trap, measure from the finished wall surface to the centre of the floor outlet. For a P-trap, measure from the floor to the centre of the wall outlet. The easiest time to measure is with the old toilet removed. Common Australian S-trap set-outs are 90mm, 120mm, 140mm, 160mm, 180mm, and 240mm.
What is a WELS rating and why does it matter for toilets?
WELS rates water efficiency on a one-to-six star scale. Higher stars mean less water per flush. Modern dual-flush toilets use around three litres for a half flush and four and a half to six for a full flush, compared to nine to twelve litres for older single-flush models. A better WELS rating saves real money on water bills over time.
Do toilets need WaterMark certification in Australia?
Yes. WaterMark is the national certification for plumbing products. Licensed plumbers must install certified products under NSW law. A non-certified toilet can create compliance issues, void warranties, and cause insurance problems. Check the label before you buy, especially with online or imported products.
Are wall-hung toilets worth it?
If you are already doing a full bathroom reno and the budget is there, yes. The clear floor is a genuine win for cleaning, the height is adjustable, and the look holds up well over time. If you are just doing a quick swap, the cost and wall work involved makes a standard toilet a far more practical choice.
Should I repair or replace a leaking toilet?
It depends on where the leak is and how old the toilet is. Fill valves, flush valves, and seals are cheap to replace and a plumber can sort them in under an hour. A cracked pan or tank usually means full replacement since structural cracks cannot be reliably patched. If the toilet is over ten years old and has multiple problems, replacement often works out cheaper in the long run than ongoing repairs.
Got questions about fitting a new toilet or dealing with a leaking one? EKORP Plumbing services the St George, Sutherland Shire, and Georges River areas with 24/7 availability, a 60-minute response time, and a $0 callout fee. Call us on 02 8667 5354 and our licensed team (Licence 322223C) will sort out the right fit for your home.