EC axial fans are currently marketed in 2 sizes, 120x120x38 mm, and ring 250(impeller diameter =200mm) x78 mm.
The 250×78 mm fan is dedicated to larger evaporator/condenser fans, with IP55 as a standard and IP68 as an option. This EC fan allows high/low speed switching with day and night operation via customer control circuit. Benchmarked with competitor EC fans, SUNON´s fans still have a 35% power saving benefit at all different operating conditions. The 120x38mm EC fan is mainly dedicated to small cooling fans or other industries.
According to DoE research, evaporator fan shutdown is a leading technology that will be very efficient for energy savings for refrigerators. Applying EC fans to refrigerators will be a key success factor in reducing total power loss. In 2015, more power saving refrigerators were included in ENERGY STAR´s Most Efficient Criteria program. This new program is dedicated to identifying highly-efficient products in the marketplace.