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Propelair Toilet System

A water and energy saving toilet designed for out-of-home use

October 2021

Propelair Toilet System

A water and energy saving toilet designed for out-of-home use

  • World Alliance Member
  • Featured Solution
  • Labelled Solution
Label Date October 15, 2021
From United Kingdom
Maturity stage TRL 9 / CRI 5-6 - Market competition driving widespread deployment &/"Bankable" grade asset class

Propelair has one goal: saving the world’s water resources, with every flush. It is the world's lowest water usage flush toilet, specifically for commercial use. The average UK toilet uses 6-9 litres of water to flush. Propelair uses just 1.5 litres of water & displaced air technology to create a powerful, high-performance flush which easily removes all waste with 1 flush. Because less water is needed, its system reduces the carbon footprint of the average toilet by 80%. Propelair reduces water & sewage bills by up to 60% while paying for itself in just 1-3 years. It eliminates aerosolised germs (including Covid-19) by up to 95%, thanks to a closed-lid flush, creating a more hygienic washroom environment for users. Additionaly, the Solution refills in 30 seconds, reducing queues. It can be retrofitted to existing drains, requiring little to no refurbishment prior to installation. It's robust design makes it well suited for corporate & commercial washrooms, reducing maintenance costs.

The Environmental Benefits

  • Replaces a 6-9 litre flush with only 1.5 litre of water and 120 litres of displaced air to create a powerful, high performance flush (84% less water)
  • Eliminates aerosolised germs (including Covid-19) by up to 95% thanks to its unique Close to Flush system
  • Currently saving over 1 billion million litres of water
  • up to 80% reduction of carbon emissions compared to mainstream

The Financial Benefits

  • Propelair reduces water & sewage bills by up to 60%
  • By saving on water & sewerage bills, Propelair pays for itself in as little as 1-3 years
  • Maintenance costs are reduced by 50% on average

Target client profile


Activity Region

  • Headquarters
  • Activity

Company Profile


Propelair exists to save water resources by reinventing the toilet, for commercial spaces, with a 1.5 litre flush.

Headquarters London SE1 7PB, UK
Type Company
View company profile Solution website

Networking Partner


“Greenbackers is all about catalyzing the investment needed to build a more sustainable society. By connecting disruptive technology providers to our network of climate focused investors, we’d like to think we’re helping to save the planet – deal by deal” Robert Hokin, Founder and Managing Partner

Solutions Associated 9
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The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Propelair has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.