These units are used on a coastal home, where the salty air creates brutal conditions.  I have purchased 7 units and only 1 unit failed sooner than expected (after 2-3 years).  Overall performance such as heating and cooling efficiency and energy consumption is solid.  Keeping the filter clean is only necessary maintenance.  The remote controls work well and are interoperable on multiple units.  Overall, would rate these as above average at a reasonable price.