System and component durability are proven by unique endurance testing original to Mitsubishi Electric. Tests that products must pass before going to market are more severe than international standards to ensure superior reliability and safety. New component designs include a simplified wiring configuration and the use of new materials that eliminate dangerous operation and promise exceptionally low maintenance.
Our full lineup of systems is placed under environmental conditions that far exceed the conditions expected in normal operation during testing. Since the failure of an outdoor unit causes a total shutdown of air-conditioning operations, systems are exposed to natural elements such as sun, seawater, weather and temperature fluctuations and 2,000-hour nonstop operation. The test results for each and every air conditioning unit produced are recorded, kept on file and can be accessed at any time using the product's serial number. This is Mitsubishi Electric quality control.
An uncomplicated piping configuration, simplified construction, and numerous protective functions and centralized control that operate under the concept of dispersed-risk management make CITY MULTI probably the most reliable multiunit split-type, packaged air-conditioning system available in the market.
