Server rooms typically require cooling the year round.  This has posed problems in the past where the ambient temperature has been too low for the system to  run.  Additionally, with systems having a timed lengthy defrost period, this allowed the internal temperature to rise.

The latest SKV/SAV RAS series and Daiseikai can operate in temperatures down to -10'C.  This together with the advanced defrost control with reduced defrost periods mean that these systems are perfect for a server room as well as the Digital Inverter range.

Note that this does not include RAS fixed speed systems or Multi Inverter systems.