Manufacturer's Stated Benefits:
Brings in fresh air and expels stale, sometimes unhealthy air
Pre-conditions incoming air to minimize energy loss
Reduces humidity in summer from incoming fresh air
Prefilters particulates from incoming air and outgoing air to protect core
Crossflow design keeps stale, outgoing air from mixing with fresh, incoming air
Capable of intermittent- or continuous operation depending on control used
Automatically defrosts when outdoor temperatures are below 23F