Old2New replacement guide HVAC products app for iPhone and iPad

"Old2New" - the product replacement guide for heating, ventilation and air conditioning devices.
Today there is an enormous installed base of HVAC control equipment including 2 million heating controllers, 15 million control valves and approximately 10 million field devices currently installed and working somewhere.
An database now exists which provides a comprehensive listing of old HVAC products from Landis+Gyr, Staefa Control System and Landis & Staefa, together with pictures and detailed descriptions of the replacement.
This app supports you by selecting the right follow-up product. With the access to a comprehensive data base you get the correspondent data sheets.