Changing all the hand driers in washrooms and conveniences at United Utilities plc's Lingley Mere site gave Europa the chance to use some energy reducing technology. Instead of simply swapping the energy inefficient hand driers for paper towels that are not sustainable, we decided to try out low energy hand driers. The Airforce One driers that were chosen generally use a sixth of the energy normally used to dry someone's hands. They do not have a heater element, use half the energy to run and are used for 20 seconds as opposed to 60 seconds with a conventional hand drier. The new units use around 35 Kwh per day as opposed to 70kwh per day for traditional dryers. So, 105 units were purchased and installed (each unit uses 1.2kwh compared to the old style that used 2.4kwh), which generated a saving of 8,715kwh of electricity per year or around four and half tonnes of CO₂ every year.