There are few things more off-putting in a bathroom than unpleasant odours. While air fresheners and extractor fans help to mask the issue, they don’t solve it at the source. That’s where odourless toilet technology steps in — a smart, built-in system designed to eliminate odours directly from the bowl before they ever escape into the room.
The idea of an odourless toilet might sound futuristic, but the technology is already here and available as an upgrade option for select Newtech toilets, including the Casalino Back-to-Wall and Casalino Compac Back-to-Wall toilet suites. But how does this clever system work, and is it worth considering for your bathroom?
At the core of odourless toilet technology lies the innovative Odour Control Device (OCD), developed by Australian ventilation experts Expella. This system is ingeniously designed to extract unpleasant odours directly from the toilet bowl, ensuring they never permeate the bathroom environment.
Let’s take a closer look at the technology behind odourless toilets and why it’s making waves in modern bathroom design.
1. Odour Detection and Activation
The OCD is activated through one of the following methods:
Once activated, the OCD draws air from the toilet bowl through the flush pipe using a fast and efficient extractor fan. This odorous air is then guided through the OCD’s non-return valve, a small but essential component preventing any smells from escaping back into the toilet bowl, or entering the system from the sewer.
After passing through the OCD’s non-return valve, odorous air is collected in the odour trap, ensuring an airtight seal between the extractor fan and toilet bowl, without affecting the toilet’s overflow function.
From the odour trap, the odorous air travels towards the sewer through a built-in exhaust duct and a flexible, easy-install connection known as the flexi duct. This direct-to-drain discharge ensures the odour is removed entirely from the bathroom environment, not just masked or displaced.
The entire system fits neatly inside the toilet cistern, preserving the minimalist look of modern toilet suites. Not relying on any filters or consumables, the system is effectively maintenance-free. There’s no need to replace anything regularly, leaving you to simply enjoy the freshness.
Despite its advanced design, the odourless system is straightforward to install. It can be included at the time of purchase and fitted by a professional plumber without major modifications. This makes it an accessible upgrade whether you're building new or renovating.
Most bathrooms rely on extractor fans, windows, or air fresheners to manage smells. But these are reactive approaches: by the time odours are being vented out, they’ve already spread through the room.
Extractor fans can be inefficient, and they often rely on users remembering to switch them on. Air fresheners can be overpowering and only mask smells without addressing their source. In addition, air fresheners are detrimental to the environment, releasing harmful gasses and eventually destined for the landfill.
Where the odourless system differs is in its proactive approach, preventing smells from entering the room in the first place.
One of the most impressive features of the odourless toilet system is how seamlessly it works behind the scenes. Integrated and automatic, it improves the bathroom experience in ways that are immediately noticeable, especially in the spaces where air quality and comfort matter most.
By drawing odours directly from the bowl and routing them into the waste system, the odourless system ensures a consistently fresher environment without the need for chemical fragrances. There’s no lingering smell after use, no need to open a window, and no filters to replace. The result is a bathroom that always feels clean, calm, and ready for the next person.
These benefits are particularly valuable in certain settings:
Wherever it’s installed, an odourless toilet turns a typically overlooked fixture into a quiet contributor to comfort and wellbeing. It’s a simple upgrade that makes a lasting difference.
Modern bathroom design is about more than looks. Increasingly, it’s about functionality, hygiene, and the overall experience. Features like soft-close seats, rimless bowls, and high water efficiency have become standard expectations. Odour control is the next logical step, and one that many homeowners are starting to prioritise.
Adding the odourless upgrade to a Newtech Casalino toilet suite means transforming an everyday fixture into a truly thoughtful design feature. It’s a small change that makes a big impact, improving air quality and enhancing comfort in one of the home’s most used spaces.
Explore the Casalino Back-to-Wall and Casalino Compac toilet suites online, speak to the team at Newtech by calling 0800 728 662, or email sales@newtech.co.nz.
