Back-to-wall Toilets

A back-to-wall toilet is designed to sit flush against the wall, concealing inlet and waste pipes for a clean, modern bathroom finish. Expella’s back-to-wall toilets combine this streamlined design with Odourless by Expella technology.

Odourless toilets by Expella are toilets integrated with Expella’s innovative odour removal technology, designed to eliminate toilet odours directly from the bowl before they enter the bathroom.

Odourless by Expella removes odours directly from the toilet bowl using Expella’s patented ventilation system that is hidden inside the cistern. The ventilation-based odour control system prevents smells escaping into the bathroom by quietly extracting odour from the toilet pan when in use and discreetly moving it it into the sewer. A nonreturn valve sealed in our ultra sonically welded odour control device ensures that the smell is gone for good.

Odourless by Expella removes odours directly from the toilet bowl using Expella’s patented ventilation system that is hidden inside the cistern. The ventilation-based odour control system prevents smells escaping into the bathroom by quietly extracting odour from the toilet pan when in use and discreetly moving it it into the sewer. A nonreturn valve sealed in our ultra sonically welded odour control device ensures that the smell is gone for good.

Odourless toilets by Expella, including models such as Milu Odourless by Expella, are designed to eliminate up to 99.7% of toilet odours instantly.

Yes, back-to-wall Odourless toilets by Expella are ideal for bathroom upgrades and renovations where a modern appearance and improved odour control and bathroom comfort are important.

Yes, back-to-wall toilets are designed to conceal pipework, creating a streamlined and contemporary bathroom appearance.

Yes, the Odourless by Expella system was recognised with a prestigious Best in Class at the Good Design Awards (Hardware and Building category) from Good Design Australia; and was a finalist in the Best Awards New Zealand. The Good Design Awards Jury praised Milu Odourless Toilet, commenting: “A clever blend of design and technology innovation brought together to resolve an age old problem... A potential game-changer for this market. True design innovation that solves a problem and has the potential to make a positive impact on the quality of our lives.”

They are suitable for homeowners renovating bathrooms, as well as plumbers and electricians installing modern toilet systems.

Yes, fragranced air fresheners, diffusers and aerosols only mask the smells and often contain harmful chemicals. Odourless by Expella uses mechanical ventilation to extract and remove the smells before they can spread around the bathroom. Proven to be 99.7% effective by University of NSW testing, the system does not use chemicals or filters that need replacing to mask odours.

The Odourless by Expella system uses a small fan installed in the cistern to extract air from the toilet bowl, this fan is faintly audible when in operation. The sound is slightly higher pitched than a ceiling exhaust fan due to its size, however it is quieter than a celling fan and far more effective at removing odour than a ceiling fan or inline exhaust system. We recommend that the Odourless by Expella system is only switched on when the toilet is in use, it should not run 24/7. It can be activated using our PIR Motion Sensor Ceiling Switch or a regular wall switch. Refer to our product fact sheets for noise data and switching information.