Case Study Yorkshire Building Society Making a World of Difference Using energy monitoring to save costs and get ahead of legislation Leading high street chain Yorkshire Building Society is pioneering a new centralised controller as part of its drive to measure and reduce energy consumption. The company's Chelsea Building Society branch in Watford has undergone replacement of its old R22 air conditioning equipment in line with the outright ban on the use of the refrigerant from January 2015. Air conditioning systems will also be subject to greater checks under new F-Gas legislation that comes into force in January 2015. In addition, the government is introducing the Energy Savings Opportunity Scheme (ESOS), which requires companies over a certain size to assess energy use in their buildings every four years. With these changes in mind, Yorkshire Building Society’s Senior Property Engineering Manager, Nigel Twemlow saw the upgrade as the perfect chance to improve the system’s controls. ♦ MITSUBISHI ELECTRIC Air Conditioning | Heating Ventilation I Controls

The old systems were replaced with a single outdoor City Multi R410a VRF unit serving six ceiling cassettes. The air conditioning works in conjunction with a Lossnay heat recovery system which can be utilised virtually anywhere to extract stale air and then recover the heating or cooling energy to either warm or cool incoming fresh air. Case Study Yorkshire Building Society Making a World of Difference “As part of our R22 phase out commitment, the decision was taken to replace the equipment at Watford. However, in addition, it also gave us an opportunity to review the on-site controls philosophy...