The Client

King’s College London (KCL) is a globally respected university founded in 1828 and it boasts 11 Nobel Prize winners among its alumni.

The Brief

The university had commissioned a refurbishment of its Franklin-Wilkins Building in Stamford Street near the South Bank, opened in 1915 and home to London Dental Education Centre, study areas, the Franklin-Wilkins Library, restaurant and café.

The refurb included toilet facilities in all areas and KCL wanted to ensure that water savings were maximised, to reinforce its commitment to sustainability and reducing impact on the environment.

Annual Savings of £72,570 through reduced water usage
Annual Water Savings of 32,680,900 litres thanks to Propelair toilets

The Solution

The heavily-used building required low-maintenance, robust toilet technology that reduced water usage and KCL had been impressed with Propelair toilets it had installed two years previously in another part of the university.

The Propelair toilet is designed for high-usage areas so was ideal for the heavily used building and SaveMoneyCutCarbon has a proven track record, having installed hundreds of units in motorway service areas across the UK.

KCL engaged SaveMoneyCutCarbon to install 153 Propelair toilets in the six-storey building, replacing old units that had standard pans and a mix of cistern sizes between 6 and 9 litres.

The Propelair toilet reduces water use by 80% or more, using patented displaced air technology that removes all waste with a single flush.

It provides hygiene benefits as well, reducing airborne germs by 95% and eliminating 99.9% of waterborne contaminants.

The experienced SaveMoneyCutCarbon team carried out a full drainage survey before starting the installation and identified that the old cast iron pipework needed descaling. The team carried out the full-bore restoration over 2 ½ weeks.

Want to reduce your water usage and carbon output?

Your business could achieve huge waters savings too if it were to install Propelair toilets throughout.

In addition to great water savings, you’ll also see a reduction in your carbon footprint.

To find out more about Propelair and how to get started, click here to download our free Propelair guide.


  • Water costs reduced by 83% based on 80 flushes a day per toilet
  • Annual water usage reduced by 32,680,800 litres
  • Annual savings of £72,570
  • CO2 emissions reduced by 33,865 kg
  • Payback in 2.8 years
"The product was really self-selecting, after seeing the installations in other high footfall areas open to the public along with actually using the products in situ, I felt there was no other option but to install the Propelair toilets. Not only does this provide us with a robust and quality product within the workplace but also helps us on our way to achieving our vision and goals in terms of reducing our environmental impact.”

Stephen Quantick, Head of Campus Operations at KCL:

“We were delighted to work with such a globally respected university and to successfully deliver the water savings that will significantly reduce KCL’s impact on the environment. As a welcome extra, there will be big savings on water bills and a rapid return on investment.”

Chris Brooks, Project Manager at SaveMoneyCutCarbon:

Want to see similar savings in your buildings?

Get in touch today to find out how we can help

0333 123 5464



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