The Mitsubishi Electric in NZ Lossnay VL220 Heat Recovery Ventilation System is a whole home ventilation system that provides fresh clean air from the outside (not attic space), removes both moisture and stale indoor air and effectively recovers heat, not only from the outgoing stale air but also from damp areas. Click the link to find out more and enquire directly: https://archipro.co.nz/products/whole-home-heat-recovery-fresh-air-ventilation-vl2-mitsubishi-electric | ArchiPro