What is a rimless toilet? The pros and cons

A rimless toilet is, quite simply, a toilet without a rim. Its design is one where the inside of the toilet pan reaches up to the top in a seamless way. The flushing system dispenses water from the back which works to cover the entire surface of the bowl with water in circular motions.

On standard toilets, there's a gap between the inside rim and the outer edge of the toilet that shoots water downwards. While the difference between the two may seem subtle, it does have a fairly significant impact on the characteristics and qualities between the two.

Related article - How much does it cost to renovate a bathroom in 2024?

1. More hygienic

A rimmed toilet can be a breeding ground for germs. This is due to the flush technique and the challenge presented when cleaning.

First, the flushing system on a rimmed toilet allows the entire pan to be washed with water every time. This inhibits the rapid build-up of bacteria that most traditional models suffer from with areas water never reaches.

Secondly, the rimless design is easier to clean. That's because, without a rim, you’re left with a smooth and seamless pan to brush or wipe. Rimmed toilets have areas under the room that are almost impossible to get to which allows germs to build and linger.

2. Water efficient

A traditional toilet uses about 6 litres of water with every full flush. In comparison, most rimless toilets only use 4.5 litres with every full flush.

The design of the rimless models and their circular flushing mechanism for water means less of it is needed. Not only does this reduction of water help the environment, but it could save you money on your water bill over time.

3. Simple installation

Upgrading doesn't need to be an ordeal. When you purchase a new rimless toilet suite for your bathroom, installation is often fast and easy meaning your bill from your plumber will be less too.

Of course, there are other factors that may influence the price of toilet installation services including your location, the type e.g. wall hung toilet and the experience and reputation of the contractor. But for a skilled professional, installing a rimless toilet shouldn’t provide any challenges at all.

4. Variety of styles and designs

You want your bathroom to look good and thankfully there is a wide range of rimless toilets so you can get all the benefits while still achieving the aesthetic you want.

There are different designs, such as wall toilet pans or floor-mounted seats. There are also a variety of colours and materials as well as brands with their own unique features and characteristics.

Related article: Toilet dimensions: A sizing guide with FAQs

5. Longevity

Rimless toilets are relatively simple in design and this can lead to fewer mechanical problems, easier repairs and longer lifespan.

6. Lower chemical usage and allergy friendly

Since rimless toilets are easier to clean and tend to stay cleaner longer, there's typically a reduced need for harsh cleaning chemicals. This is better for the environment but also safer for households, reducing exposure to potentially harmful substances.

7. Odour and noise reduction

With fewer places for bacteria and waste to hide, rimless toilets can help in reducing odours. This can make for a fresher-smelling bathroom. Some rimless toilet designs can also reduce the noise associated with flushing. This is due to the innovative flush technology that minimises turbulence and water splash.

8. Adaptable to future technology

As bathroom technologies evolve, rimless toilets are well-positioned to integrate with future innovations, such as touchless flushing mechanisms or smart home connectivity.

1. Powerful flush and splash

Because there isn't a protection rim, some rimless toilets have more of a splash. However, with correct installation, this shouldn't typically be an issue.

And considering that we should all put down the seat when flushing anyway this issue is lessened even more. The easy way in which you can clean the toilet also means they’ll be much more sanitary on a day-to-day basis with any splashes quickly wiped up.

2. Potentially higher cost

Sometimes, when compared directly to traditional models, the equivalent rimless model of a toilet may be more expensive. However, rimless toilets come in at all price points which means there is usually something for everyone. When you consider how much you'll be saving money with lower water bills over the years, a slightly higher upfront cost will pay itself off relatively quickly.

Related article - The pros and cons of different types of toilets

3. Compatibility with existing plumbing

In some older homes or specific plumbing setups, installing a rimless toilet may require additional adjustments or modifications to ensure compatibility, potentially adding to the overall cost and complexity of installation.

4. Limited selection

As rimless toilet technology is relatively new, there may be a more limited selection of models and designs compared to traditional toilets. This can make it more challenging to find a rimless toilet that fits specific aesthetic preferences or bathroom layouts.

Are rimless toilets better than wall hung toilets?

The choice between rimless and wall hung toilets depends on priorities. Rimless toilets offer better hygiene and easier cleaning, lacking a rim where germs can accumulate. Wall hung toilets save space and make floor cleaning easier, with a concealed cistern. Preference should be based on hygiene, space, and design needs.

What are the most common rimless toilet designs?

Common rimless toilet designs include close-coupled (cistern and bowl integrated), wall hung (bowl mounted on the wall), and back to wall (bowl sits against the wall with a concealed cistern). Each type facilitates easier cleaning due to the absence of a rim.

Is a rimless toilet better than a back to wall toilet?

Choosing between a rimless and a back to wall toilet depends on hygiene and design preferences. Rimless toilets provide better hygiene with easier cleaning, while back to wall toilets offer a tidy look with hidden plumbing. The decision should weigh hygiene, style preferences, and space efficiency.

How do I choose between a rimless toilet and a traditional rimmed toilet?

The choice hinges on hygiene and cleaning ease. Rimless toilets reduce germ build-up and are simpler to clean, offering a more hygienic bathroom. Traditional rimmed toilets can be harder to clean thoroughly. Consider your priorities in hygiene, maintenance, and bathroom aesthetics.

After learning the basics of a rimless toilet, you should hopefully have some idea of whether it's the right choice for you. If you’ve decided that it is, let your plumber know and focus on the look, design and style of toilet you’d like, which is undoubtedly the fun part with so many fantastic options to choose from.

Browse the best rimless toilets from Australia's leading suppliers on ArchiPro