Project Description

Grosvenor Estates UK

70 Grosvenor Street, London

As part of Grosvenor Estates UK’s water reduction initiative, Propelair prepared a business case for its head office at 70 Grosvenor Street, London.

Propelair found that Grosvenor Estates would save almost 4 million litres of water each year by switching to Propelair, so they decided to replace all their toilets at Grosvenor Street with 31 Propelair units.

Grosvenor Estates own a number of properties across central London, therefore understand how important it is to contribute positively to the environment, whilst reaping the benefits – hence why they relied on Propelair as the suitable choice of toilet.


Metered Water Charge

Flushes per Day

Previous Flush Volume
7 litres

Annual Savings

125,860 litres


3.5 years

(All figures represent a single Propelair unit)


  • The installation of 31 Propelair toilets has achieved a 79% water saving
  • Annually, this saves 3,901,040 litres of water (building utilisation = 260 days)
  • An annual carbon reduction of 4,020 kg


  • 3,901,040 litres of water saving = £8,387 reduction in water bills annually
  • Payback achieved in 3.5 years


  • Propelair’s unique displaced air technology efficiently removes all waste with one flush
  • Reduces airborne germs by up to 95%
  • Removes up to 99.9% of waterborne contaminants
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